Unit 3 What were you doing when the UFO arrived?
Subject English Project Section A 1a—1c No. 016
Designer Language goal Talk about past events.
【Key points】
1、 The 10 words: UFO, barber, barber shop, bathroom, bedroom, kitchen, get out.
2、 The past progressive tense: was / were + doing sth.
3、 Drills：① A: What were you doing when the UFO arrived ?
B: I was standing in front of the library when the UFO arrived.
② A: What was the boy doing when the UFO landed?
B: He was sleeping late when it arrived.
【预习感知】
Step 1 自主学习
1.一个飞碟_____________
2.理发店_________
3.在盥洗室_________
4.在卧室__________
5. 在厨房里____________
6.出去_______________
Step 2 知识梳理
过去进行时
1.含义：表示过去的某一时刻或某一时间内正在进行或发生的动作。
2.构成：was/were +v-ing。
3.标志：at that time, this time yesterday, all the evening, from 8:00 to 10:00 yesterday,
just then, at nine yesterday, when等表示明确有具体的时间状语。eg：
I was doing my homework at this time yesterday.
What was Tom doing at ten yesterday?
I was eating dinner when the phone rang.
4.具体的句型：
(1)肯定句：主语+was/were +v-ing eg：
They were having a meeting at that time.
(2)否定句：主语+was not(wasn’t)/were not(weren’t) +v-ing
上句改写为：They__________________ having a meeting at that time.
(3)一般疑问句式：Was/Were +主语+v-ing？
肯定回答：Yes，…was/were.
否定回答：No，…wasn’t/weren’t.
Eg： Was she reading a book when the teacher came in?
Yes, she was. / No, she wasn’t.
【学习过程】
1、1a Where were you when the UFO arrived？
Match the statements with the people in the picture.
2、Listen and finish 1b.
3、1c Make conversations using the information in 1b.
【当堂达标】
（一）根据句意及首字母完成单词
1.My sister was watching TV w___________ she was having supper.
2.My mother was cooking in the k___________ when I got home yesterday.
3.My friend b_____________ me a book as a birthday present last week.
4.I w___________ in front of the library when the UFO arrived.
5.He was g___________ out of the shower when it arrived.
(二) 用所给词的适当形式填空
1.I often see Mrs. Green__________________(water) flowers in her garden.
2.When they came into the room, Jack and Mike ____________(read) books.
3.While I________________(sing) an English song, he ____________(come) in.
4.What__________ you___________(do) at this time yesterday?
5.We ________________(listen) to the radio at 7:00 yesterday evening.
(三) 单项填空
（ ）1.We heard someone ______ in the next room.
A. sings
B. sang
C. to sing
D. singing
（ ）2.There are many trees _____ the classroom.
A. in front of
B. in the front of
C. in front
D. at the front
（ ）3.His mother wanted to know what he ______ at that time.
A .is doing B. was doing C. has done D. will do
（ ）4.They were playing football it rained.
A. while
B. when
C. as
D. before
（ ）5.____we were eating dinner in the restaurant, the owner’s dog took my bag away quietly.
A. Because
B. While
C. If
D. Until
【课后反思】
Unit 3 What were you doing when the UFO arrived?
Subject English Project Section A 2a—2c No. 017 Designer Language goal Talk about past events.
Key points
1、The words: alien，bought，land, got, take off, while.
2、The past progressive tense: was / were + doing sth.
3、Drills： ① A: What were you doing when the UFO arrived ?
B: I was standing in front of the library when the UFO arrived.
② A: What was the boy doing when the UFO landed?
B: He was sleeping late when it arrived.
【预习感知】
Step 1 自主学习
1. 一个外星人_____________
2.buy 过去式 _________
3.登陆，着陆 _________
4. get 过去式__________
5. 起飞 ____________
6.当。。。时候__________
【学习过程】
1、Listen and finish 2a and 2b.
2、2c Look at the picture and make sentences with “when” and “while”.
3、 Recite the sentences in Grammar Focus.
【当堂达标】
（一）根据句意及首字母完成单词
1．I was c__________________ my hair in the barber’s shop when it began to rain.
2. The plane l_______________ safely at last.
3. I looked all over for that book but I couldn't find it a ______________.
4. You should ______________(say) sorry to your sister .
5. Don't forget __________________(call) me when you get there.
6. She likes wearing ________________ (color) clothes .
7. What _______________(be) you ________________(do) when he arrived?
8. He ______________ (join) the club two months ago .
9. Now Lily ___________________(read) and ________________(write) words.
10. While my parents _____________________________(watch) TV, I got home.
11. The police followed the man _______________________(see) where he was going. （二）单项选择题
( )1.__ I was talking on the telephone, David came in.
A. Because
B. While
C. If
( )2.He was sleeping late _____ someone knocked on the door.
A. when
B. while
C. as
( )3.An alien got out _______ the UFO and walked _______ the street.
A. off；on
B. from；along
C. of；down
( )4.—What were you doing at this time yesterday?
—I _______.
A. sleep
B. slept
C. was sleeping
( )5.Seeing a UFO is a _______ thing.
A. amazing
B. amazed
C. amaze
( )6.The girl was _______ at the strange noise.
A. scared
B. scare
C. scaring
( )7.He is ill. I know he is _______ now.
A. in the hospital
B. in hospital
C. at the hospital
( )8.She was _______to hear the news.
A. surprised
B. surprise
C. surprising
( )9.Is he _______ to clean the outside of the windows or only the inside?
A. suppose
B. supposed
C. supposing
( )10._____ whether he will come or not.
A. I’m sure
B. I’m not sure
C. I’m sure not that
（三）完形填空
One morning, Sue was riding her bike to school. She was late, so she decided to take a short cut(捷径). But she made a mistake and turned into a one-way street. The street was not very 11 . A car was coming from the other direction(方向). The driver quickly drove to one side and drove into a shop window. The shop assistant was greatly frightened(害怕)! There was 12 everywhere.
Sue rode into the other side of the street and 13 a man, then an apple cart. The apple cart turned over and the apples went in all directions.
A group of students were having 14 in a small restaurant. Quickly they ran across the street. With their help, all the apples were 15 and put back on the cart. Luckily, neither Sue nor the driver of the cart was hurt. A policeman came by and saw what happened. He stopped Sue from riding to school and asked her some questions, so Sue was even later for school.
( )1.A. wide B. narrow C. long
( )2.A. grass B. glass C. trouble
( )3.A. touched B. hit C. kicked
( )4.A. breakfast B. lunch C. supper
( )5.A. broken B. picked up C. carried
Unit 3 What were you doing when the UFO arrived?
Subject English Project Section A 3a—4 No. 018 Designer Language goal Talk about past events.
Key points 1、The 6 words: experience, imagine, strange, follow, amazing, kid(v.).
2、The past progressive tense: was / were + doing sth.
3、Drills： --I was walking down the street when a UFO landed. --While it was looking at the souvenirs, I called the police.
--What were you doing at nine o’clock last Sunday morning?
学生学习活动设计
1.3a Read the e-mail and number the pictures in the correct order .
Listen to the tape and practice reading.
2. 3b Cover the story .Look at the pictures and take turns to tell the story.
3. Part 4 . Pairwork : What were you doing at these times last Sunday ?
Make an interview .
Interview two classmates in your class and write down their answers.
Begin like this: What were you doing at … ?
I was … .
【预习感知】
Step 1 自主学习
1.一次不寻常的经历______
2. 起飞________
3.kid(现在分词)_________
4.从……出去 _________
5.打电话给警察 _______
6.感到惊讶___________
Step 2 知识梳理
when与while用法
1.when是“当……时候”，相当于at that time, 既可以表示某一时刻又可以表示某一段时间，
所以when引导的时间状语从句动词既可以是延续性的，又可以是非延续性的。when引导的时间状语如果是一般过去时，主句一般用过去进行时。而while也意为“当……时候””，相当于during the time，表示某一段时间历里的情况，故其引导的时间状语从句中的动词必须是延续性的。eg： While I was watching TV, my mother came back.. =When my mother came back,
I
was watching TV.
2.while重在强调其后的动作与助于动作的对比，表示“与此同时”。eg：
She was listening to music while I was playing computer games.
【学习过程】
练习
1）__________ the teacher came in, we were talking and laughing.
2) I got home___________ my mother was cooking dinner.
3) They were dancing __________ we came to meet them.
4) ____________the alien was visiting the museum, the boy called the police.
5) I graduated from Shandong University this year. So I have no e___________in teaching
English.
学习 3a部分
1.读课文，写出下列短语和句型。
1)一次不寻常的经历 _______________ 2)大约在十点左右
3) 跟随某人做某事______ 4)它是多么的奇怪！ _______
5)当它走进一家礼品店的时候我感到非常惊讶。__________________________________________
6)太不可思议了。__________________________________
2.再读短文，回答问题。
1）When did the UFO land ? What was the writer doing ?
________________________________________________________________
2) What places did the alien go ? What did they do ?
________________________________________________________________
3) Did the alien buy any souvenirs in the shop ？
________________________________________________________________
4) What did the writer do while the alien was in the museum ?
________________________________________________________________
【当堂达标】
（一） 填空：
1.They were talking _____ the phone .
2.I was the barber’s chair .
3.The boy was walking the street when a UFO landed .
4.I had a very unusual experience Sunday .
5.The alien visited the Museum Flight .
(二) 用所给词的适当形式填空
1. What an ______________(amaze) sight!
2. He __________________ (draw) at eight yesterday evening.
3. The girl __________________(shop) when her friend ______________ (see) her.
4. While he ____________ (cook) dinner, his friend ______________ (get)
out of the shower.
5. He saw the UFO while he ____________________ (walk) down the street.
6. While we _____________________ (have) dinner, the telephone rang.
7. What ______________ you ________________ (do) when your mother came back?
8. You are always __________________ (kid). If you do the same thing again,
I’ll be angry.
Unit 3 What were you doing wh en the UFO arrived?
Subject English Project Section B 1a—2c No. 019 Designer Language goal Talk about past events.
Key points 1、The 5 words: scared, climb, jump, shout, ride—rode.
2、The past progressive tense: was / were + doing sth.
3、Drills： --While John was walking to school, he saw a cat in a tree.
【预习感知】
Step 1 预习导学与自测：自主完成activity 1.
1.爬树______
2.跳下来__________
3.惊恐的________
4.呼喊
________
5.骑自行车________
6.照相______
7.报警______
8.警官________
Step 2
情景导入：(1) I was reading the book. The light was off.
(用连词while把两句话连接起来:While I was reading the book, the light was off.)
(2)I was cooking. The door bell rang.
(用while把两句话连接起来:The door bell rang while I was cooking.) Step 3 自主探究：词组用法。
1、be scared to do表示“不敢做某事”，是主观原因。
例如：He is scared to go out at night.
2、be scared of doing 表示“担心出现doing所出现的情况、结果”，doing 是客观上造成
的。例如：He is scared of failing in this maths test.
3、小节回顾
1) While 表示“在……过程中”，强调在一段时间内，所以While引导的从句中的谓语动词
必须为延续性动词。
如：While was w riting a letter ,the children were playing outside.
Mary 写信时孩子们正在外面玩。（此句中主句动词play为延续性动词，强调主句和从句
的动作同时发生。）
when连接的状语从句是个特殊句型，前一个分句（谓语动词用过去进行时）+后一个分句（谓
语动词用一般过去时）表示在前一个动作正在进行的过程中突然发生了后一个动作 如：I was walking along the road when I met a friend of mine.
2) She’s shouting.
shout, shout at, shout to 的用法
（1）shout 的意思是“ 大叫、呼喊”，指为了使人听见或引起注意而提高声音。
（2）shout at sb. 对某人大声喊叫，表示某人非常生气，冲着另一个人大喊大叫，态度不
好。例如：
He’ll shout at me if I do something wrong ,so I should be careful enough not to annoy him.
(3)shout to sb.由于相隔距离远，声音小了听不见，因而高声喊叫某人。
例“Come and help me ,please”she shouted to him because he was far away.
【学习过程】
1 Match the sentences with the pictures.
2. Listen and finish 2a and 2b.
3. 2c Talk about the people in 2a.
【当堂达标】
(一) 单词拼写。根据汉语或单词的正确形式填空
1. We know many _____________ (hero) in the movie.
2. My parents _____________ (fly) to Shanghai last week.
3. The students sit on the chairs _____________(silence).
4. I happened ____________ (see) my teacher on the way to school.
5. The boy was sitting at the _____________ (doctor).
6.My uncle said he__________________ (come) in two days.
7.Mr. Wang’s students are good at English and they are _____________________(勤勉
的).
8._____________________(幸运地), he passed the math exam this time and he was very
happy.
9.The man got the __________________ (令人失望的)news.
10.My grandpa lives in a ________________(乡村)
（二）写出下列动词的-ing形式：
1.wear ___________
2.listen ____________ 3 do _____________ 4. have ____________ 5.make ____________ 6. swim ___________ 7. lie ______________ 8.begin
____________
（三）选择填空
( )1. What ______ you ______ when your mother came back?
A. are; doing
B. were; doing
C. did; do
D. was; doing
( )2. There are a lot of trees ______ the house.
A. in front of
B. in the front
C. at front of
D. at the front of
( )3. When I got to the station , I saw Mike _______ bus.
A. get on
B. getting on
C. got on
D. get into
( )4. ______ the barber’s, I had my hair cut.
A. In
B. At
C. On
D. For
( )5. When I saw a stranger riding on my bike, I ______ the police.
A. call
B. ask
C. called
D. asked
( )6. I had ______ unusually experience on Sunday.
A. a
B. an
C. the
D.\
( )7. _______ ten o’clock in the morning, I was shopping.
A. Around
B. About
C. On
D. At around
( )8. I went to the shop ______ some souvenirs.
A. to buy
B. buy
C. buying
D. bought
( )9. The foreigners ______ the small village.
A. arrived
B. arrived in
C. reached
D. arrived at
( )10. The teacher asked the students ______ him ______ the experiment.
A. to follow; do
B. follow; do
C. to follow; to do
D. follow; to do
Unit 3 What were you doing when the UFO arrived?
Subject English Project Section B 3a—4 No. 020 Designer Language goal Talk about past events.
Key points 1、The 7 words: train station，run—ran, run away, anywhere, meet—met,
come in, happen.
2、The past progressive tense: was / were + doing sth.
3、Drills： Reading and writing a story.
【预习感知】
Step 1 自主学习
1.最后______
2.向外看__________
3.考虑________
4.火车站________
5.从…出来________
6.跑掉______
7.寻找______
8.某事发生在某人身上________
Step 2 自主探究：词组用法。
happen / take place 都有“发生”的意思。 happen 有“碰巧发生，偶然发生”的意思。
固定词组为“happen to sb.”,
如：What happened to him ? He had an accident yesterday.
take place 往往表示必然性的发生或计划内安排的发生。
如：It will take place sooner or later(迟早)。
【学习过程】
1. 3 Read and answer the questions.
2. 4a Use the pictures to write a story.
3. 4b In pairs, talk about what was happening at these times.
Read and answer the questions.
1. What was Linda doing when Davy ran away?
________________________________________________________________
2. Why couldn’t Linda see Davy?
________________________________________________________________
3. Where was Davy while Linda was looking for him?
________________________________________________________________
4. What happened while Linda was on the telephone?
________________________________________________________________
5. What was Davy doing when Linda finally saw him?
________________________________________________________________
Step 4 4a Use the pictures to write a story.
_______________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ 【当堂达标】
(一)用所给动词的适当形式填空。
1.The boy _______________(look) out of the window when the policeman came.
2.While they _______________(play) soccer, we were watching TV.
3.My father was reading a book when I _____________(get)back.
4.The weather ____________(be) fine while we were in Beijing.
5.The girl was really ___________ (scare) when she saw the snake.
(二)完成句子。
1.正当琳达买报纸的时候，狗从箱子里出来然后跑掉了。
While Linda was buying a newspaper, the dog ______ ______ _____the box and_______ _______ .
2.格林一家人正在考虑去长城。The Greens are ____________ _______ going to the Great Wall.
3.汤姆发生了什么事？ What _____________ ______Tom?
4.对我来说，学开小汽车很难。It’s ______________ for me __________learn to drive a car.
5.我在学校外面遇到了一位老朋友。He met an old friend____________ _______ ________ .
(三) 单项选择。
（ ）1._____ I was cooking, Tina called me.
A. Why
B. While
C. After
D. Before
（ ）2.We can see a big tree in _____ front of the classroom.
A. its
B. that
C. the
D./
（ ）3.She hoped nothing bad would ________ him.
A. happen
B. take p lace
C. happen to
D. take place of
（ ）4.--Did you see him come into the building?
--No, I ____ a football game at that time.
A. watch
B. was watching
C. watched
D. am watching
（ ）5.When his mother got home , he _____ computer.
A. plays
B. playing
C. is playing
D. was playing
Unit 3 What were you doing when the UFO arrived?
Subject English Project Self Check No. 021
Designer Language goal Talk about past events.
Key points 1、The 3 words: accident, Beijing International Airport, plane.
2、The past progressive tense: was / were + doing sth.
3、Drills： Learn the words and make sentences with them
Write a passage using while, when and was / were + doing.
学生学习活动设计
1. 1 Fill in the blanks with the words, then make sentences with them.
2. 2 Write a passage using while, when and was / were + doing.
3. 3 Circle the words that don’t belong.
【学习过程】
Step 1 自主学习 Make sentences with the words.
1._________________________________________________________________________________ _
2._________________________________________________________________________________ _
3._________________________________________________________________________________
_4.________________________________________________________________________________ __
5._________________________________________________________________________________
_
Step 2 Write a passage using while, when and was / were + doing.
_______________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________
【当堂达标】
(一) 单项选择。
( )1. Look, the birds are singing ______ the tree and there are so many apples ______ the tree.
A. in; in
B. on; on
C. in; on
D. on; in
( ) 2. The shop is so ______ that Mike can’t find his friends anywhere.
A. many
B. much
C. crowd
D. crowded
( ) 3. What ______ you ______ at this time yesterday?
A. did; do
B. have; done
C. were; doing
D. are; doing
( ) 4. A friend of ______ called ______ name, but he didn’t hear.
A. me; Davy’s
B. mine; Davy’s
C. mine; Davy
D. me; Davy
( ) 5. I went out to see what the cat was doing, and was very ______ to see it was climbing up a tree.
A. surprised
B. surprise
C. surprising
D. to surprise
( ) 6. He came to see me ______ my holiday.
A. during
B. when
C. while
D. as
( ) 7. The hungry dog went out ______ food.
A. look for
B. to look for
C. find
D. to find
( ) 8. ---- When will the plane _________? ---- I think it will leave in an hour.
A. take away
B. take over
C. take down
D. take off
( ) 9. ________ is on June 1st.
A. Children’ Day
B. Children’s Day
C. The Children’ Day
D. The Children’s Day
( )10. He didn’t go there. I didn’t go there ______
A. too
B. also
C. either
D. neither
（二）阅读理解。
Bill: What were you doing last night?
Mike: I was doing my homework . What about you ?
Bill: I was reading a magazine about UFOs .
Mike: Really? Do you believe there are real UFOs ?
Bill: Well, some of the UFO stories may be true .The universe(宇宙) is so big and there are millions of (无数) stars in it . I think there must be some kinds of living creatures (生物或人)in the outer(外部的)space . They must be cleverer than us.
They are trying to visit us . Did you hear of the reports about the UFOs which flew Beijing , Wuhan and Hangzhou recently(最近) ?
Mike: Oh, yes . And I have read some other reports about the UFOs .
Bill: What do you think of UFOs ?
Mike: Well, I can't really agree with you . I don't think there are real UFOs .
根据对话，回答下列问题。
1.What was Bill doi ng last night? _______________________________________________
2.What was Mike doing last night ? _______________________________________________
3.What does Bill think of UFOs ? _______________________________________________
4.Did Mike read any reports about the UFOs? __________________________________________
5.What does Mike think of UFOs ? _______________________________________________
Unit 3 What were you doing when the UFO arrived?
Subject English Project Reading No. 022
Designer Language goal Talk about past events.
Key points 1、The 25 words.
2、The past progressive tense: was / were + doing sth.
3、Drills： Learn the words and make sentences with them
Write a passage using while, when and was / were + doing.
【预习感知】
Step 1 Reading （1）按要求写出下列单词
hear (过去式)________ fly(过去式)________(名词形式)_________ 听说_______
become（过去式）________ring (过去式）___________ tell（过去式)________
现代的_____________ 杀死，杀害________谋杀，凶杀____________ 明亮的____________ 寂静，沉默_____________ 英雄__________ ________ (复数)
发生________ (单词)________(词组) 像….一样________ 在地球上________ 【学习过程】
（1）快速读课文，找出些列短语以及画出其所在句子。
重要事件____ _ 重要的事件之一___________ ______
在历史上___________________ 在美国当今历史上_______________
在这一天 在操场上玩___________________
被破坏______ ________ 对。。。来说有意义_________________
在月球上行走_________________ 环球飞行____________________
成为一个民族英雄____________________
（2）再读课文，回答下列问题。
1.What happened on April 4 ,1968 in the United States ?
___________________ _______
2. was Robert Allen doing when he heard the news ?
_____________________ _ _____________
3.When did Dr Martin Luther King’s murder take place ?
________________ ______________ ______________
4.What was wrong with the World Trade Center in New York on September 11,2001?
______________________________________________________
5.What do you know about Yang Liwei in China ? What did he do ?
______________________________________________________
(4) 完成3a 连线。
【当堂达标】
（一）单项选择。
( )1. They said they ___ a party at 8:00 last night.
A. were having
B. are having
C. had
( )2.He had a cold this morning, so he went to the _______.
A. doctor
B. doctor’s
C. doctor’s home
( )3.Mother got mad _____ me for watching TV for hours.
A. at
B. about
C. for
( )4.There is a big apple tree _____ the room.
A. in front of
B. in the front of
C. in front
( )5.You speak English as _____ as Jack.
A. well
B. good
C. better
(二)句型转换。
1、What were you doing when the UFO arrived ? （用have lunch 回答 )
I __________ __________ _________ when the UFO arrived .
2、Tom was reading a novel when I saw him. ( 改为同义句)
__________ Tom ________ _________ a novel , I saw him .
3、I looked inside . I wanted to see what they were doing . （合并成一个句子)
I looked inside ________ _________ what they were doing .
4、He i s a funny boy . （改为感叹句)
_________ _________ the boy is !
5、We were talking under the tree when it began to rain. 就画线部分提问)
__________ ________ we talking when it began to rain ?
(三)完型填空。
A man was sitting in the doctor's office . He was telling the doctor about his （1）.
"I like football, doctor . " he said . "Please help me . " My life has （2）been a good one since（自从) I became（3）in football and it is getting worse and worse . I can't even（4） well at night . When I close my （5）, I'm out there in the football field （足球场) （6）after a flying ball . When I wake up , I'm more （7） than I was when I went to bed , What should I do ?"
The doctor sat back and said , "First of all , you （8） to do your best not to dream about football . Before you are falling asleep ,try to （9） about something else. Try to think that you are at a party and someone is going to give you some million dollars ."Are you crazy ?" The man shouted . "I will （10）the ball !"
（ ）1、A. problem B.family C. sport D.journey
（ ）2、A. always B.already C. never D.often
（ ）3、A. interested B.careful C. deep D.strong
（ ）4、A. work B.play C. do D.sleep
（ ）5、A. doors B.windows C.books D.eyes
（ ）6、A. looking B. playing C.running D.waiting
（ ）7、A.worried B.tired C.surprised D.pleased
（ ）8、A. want B.hope C.have D.decide
（ ）9、A. hear B.write C.talk D.think
（ ）10、A.miss B.play C.catch D.pass
Unit 3 What were you doing when the UFO arrived?
Subject English Project Reading No. 023 Designer Language goal Talk about past events.
Key points 1、The 25 words.
2、The past progressive tense: was / were + doing sth.
3、Drills： Learn the words and make sentences with them
Write a passage using while, when and was / were + doing.
【预习感知】
Retell the text orally then write down the sentences.
______________________________________________________________________________
__________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ 【学习过程】
1.总结含有 off 的短语：
关闭____ ___ __ 起飞_____ ______ 脱下_____ ______ 从….掉下来_________
2. 用上面的短语填空。
1) Please ____ __________ the TV. I want to sleep now.
2) I _______ ____________the ladder(梯子) yesterday.
3) While we were driving to the airport, the plane ___ ___ ________.
4) It’s hot in the room. You had better __ ___________ your coat.
3.as ……as 的用法as 与 as 之间加_______（词）, 其否定用法为：____ _____或_______
例如 I think math is as important as English.
You are not so tall as me. He is not as lazy as her..
【当堂达标】
（一）单项选择。
( )1.We sa t on the lake bank face to face ___ silence
A. on
B. in
C. with
( )2.—I find my pen _______. But I can’t find it ______.
—Don’t worry. Sooner or later you’ll find it _____.
A. somewhere ; anywhere ; everywhere
B. everywhere ; anywhere ; somewhere.
C. anywhere ; somewhere ; everywhere
( )3.She didn’t think about _____ outside the station.
A. to look
B. looking
C. looked
( )4. When I returned, I saw him ___ on the bed.
A. lie
B. lying
C. laid
( )5. Xi ao Hong is scared of ____ English.
A. learn
B. learning
C. to learn
( )6. What ____ she _____ this time last Friday?
A. were, doing
B. is, doing
C. was, doing
( )7. What happened ____ you?
A. to
B. for
C. in
( )8.My mother ______ in the kitchen when the phone rang.
A. is cooked
B. is cooking
C. was cooking
( )9._____we were eating dinner in the restaurant, the owners dog took my bag away quietly.
A. Until
B. While
C. As soon as
( )10.There are only three chairs here. We need one______.
A. more
B. other
C. another
( )11.______beautiful day it is!
A. What
B. How
C. What a
( )12.My father is a policeman. He wears a uniform on weekdays but he has on his _______ clothes at weekends.
A. every day
B. everyday
C. new
( )13. There are ten ______ young people in the playground.
A. hundred
B. hundreds
C. hundreds of
( )14.He is ill. I know he is _______ now.
A. in the hospital
B. in hospital
C. at the hospital
( )15 The Smiths are watching the men’s table tennis match after dinner.（替换练习）
A. Mr. Smith
B. The Smith
C. The Smith family
（二）根据首字母填空。
Halloween is an autumn holiday that Americans c____________(1) every year. It means “holy evening”, and it comes every October 31,the evening before All Saints Day. However, it’s not really a church holiday. It’s a h____________(2) for children.
Every a____________ (3), when the vegetables are ready to eat, children pick large orange pumpkins. Then they cut faces in the pumpkins and p_____________(4) lights inside. It looks like there is a p______________(5) looking out of the pumpkin!
The children also put on s_______________(6) masks and frightening clothes every Halloween. Some children paint their f______________(7) to look like monsters. Then they carry boxes or bags from house to house. Every time they c_______________(8) to a new house, they say, “Trick or treat! Money or eat!” The adults put a treat money or candy in their bags.
Some children t____________(9) of other people on Halloween. They carry boxes for UNICEF (The United Nations International Children’s Emergency Fund).They ask for money to help poor children all around the world. Of course, every time they help UNICEF, they usually r______________(10) a treat for themselves, too.
WHEN与WHILE用法区别 when, while这三个词都有"当……时候"之意，但用法有所不同，使用时要特别注意。 ①when意为"在……时刻或时期"，它可兼指"时间点"与"时间段"，所引导的从句的动词既可以是终止性动词，也可是持续性动词。如： When I got home, he was having supper.我到家时，他正在吃饭。 When I was young, I liked dancing.我年轻时喜欢跳舞。 ②while只指"时间段"，不指"时间点"，从句的动词只限于持续性动词。如：While I slept, a thief broke in.在我睡觉时,盗贼闯了进来。 辨析 ①when从句与主句动作先后发生时，不能与while互换。如： When he has finished his work, he takes a short rest.每当他做完工作后，总要稍稍休息一下。(when = after) When I got to the cinema, the film had already begun.当我到电影院时，电影已经开始了。(when=before) ②when从句动词为终止性动词时，不能由while替换。如： When he came yesterday, we were playing basketball.昨天他来时，我们正在打篮球。 ③当从句的谓语是表动作的延续性动词时，when, while才有可能互相替代。如：While / When we were still laughing, the teacher came in.正当我们仍在大声嬉笑时，老师进来了。 ④当从句的谓语动词是终止性动词，而且主句的谓语动词也是终止性动词 时,when可和as通用，而且用as比用when在时间上更为紧凑，有"正当这时"的含义。如： He came just as (or when) I reached the door.我刚到门那儿，他就来了。 ⑤从句的谓语动词如表示状态时，通常用while。如： We must strike while the iron is hot.我们应该趁热打铁。 ⑥while和when都可以用作并列连词。
when 和 where 引导定语从句的用法 定语从句既是英语语法的一个重点，同时又是一个难点。说它是难点，主要难在两点上：一点是如何正确判断什么样的汉语句子要译为英语的带定语从句的复合句；另一点是定语从句的引导词较多(包括关系代词who, that, which, as 和关系副词when, where, why)，而且其用法也较复杂。那么到底什么情况下用when和where来引导定语从句呢？它们又该怎么用呢？下面就举例说明： 一、when：当主句中的先行词(即主句中被后面定语从句修饰的词)是表示时间意义的名词时，它只能作定语从句的时间状语，放在定语从句句首。如果定语从句的引导词是作该定语从句的主语或宾语，则要改用关系代词that或which来引导。例如： The days when we used foreign oil are gone. 我们用洋油的日子一去不复返了。 I'll never forget the day when I was born. (=I'll never forget my birthday.) 我永远不会忘记我出生的日子。 It happened in November when the weather was wet and cold. 这事发生在天气又湿又冷的十一月。 In the years that (which) followed, Marx kept on studying English and using it. 在这之后的几年中，马克思继续学习和使用英语。(that作定语从句"that followed"的主语) The day (that) I always remember in all my life is my birthday. 我一生中最难忘的日子是我的生日。(that作定语从句"that I always remember in all my life"的宾语，that可以省略)
一、从句是如何出题的？ 1. 时态 2. 考连接词 3. 考语言顺序 二、学好从句的两个基本条件 1. 时态 2. 从句的三个必须:①必须是句子；②必须有连接词；③必须是陈述句 三、状语从句、宾语从句、定语从句重点 1.如何判断何种从句 2. 从句的时态 3. 从句的连接词与扩展 4. 经典单选、从句与选词、长句子分析 四、如何判断三种从句 1. 状语从句无先行词 2. 宾语(表语)从句无先行词有动词或词组 3. 定语从句先行词多为名词或代词 一、When引导的定语从句与时间状语从句的区分 1. when的译法不同。在时间状语中，when 翻译成“当……的时候” I want to be a teacher when I grow up. 当我长大的时候，我要做一名老师。在定语从句中，when不翻译。I won't forget the day when he says he loves me. 我不会忘记他说爱我的那一天。 2. 在时间状语中，when从句前面或后面是句子；定语从句中，when 从句不能位于句首，且通常when前为表示时间的名词day、year等。 3. when在从句的作用不同。在时间状语从句中，when是连词，只起连接主句和从句的作用，不做从句的任何成分。不过when引导的时间状语从句修饰主句的谓语，做主句的时间状语。 在定语从句中，when是关系副词，在从句中代替先行词做从句的时间状语，修饰从句的谓语。 例1 I will always remember the days when I lived with my
grandparents in the country. 例2 I always remember the days in the country when I see the photo of my grandparents. 点评：例1意为“我会永远记得跟我祖父母一起住在乡下的那些日子”，其中when 引导的是一个定语从句, 修饰the days, when在从句中作时间状语。例2意为“当我看到祖父母的照片时，总是会想起在乡下的那些日子”，其中when 引导的从句并不修饰前面的名词the country，因此可判定为时间状语从句。 例1中的when可用in which替代，即从句可改为...in which I lived with my grandparents in the country. 例2中从句前有名词，但根据句意可 知并不是从句所修饰的对象，也不能用“介词+ which”来替代。 二、判断关系代词与关系副词 方法一：用关系代词，还是关系副词完全取决于从句中的谓语动词。及物动词后面无宾语，就必须要求用关系代词；而不及物动词则要求用关系副词。例如： This is the mountain village where I stayed last year. 这是我去年呆过的山村。 I'll never forget the days when I worked together with you. 我永远不会忘记与你共事的日子。 判断改错： 1. This is the mountain village where I visited last year. 2. I will never forget the days when I spent in the countryside. 3. This is the mountain village （which）I visited last year.
when和while用法区别专项练习 讲解三例句： 1. The girls are dancing while the boys are singing. 2. Kangkang’s mother is cooking when he gets home. 3. When/While Kangkang’s mother is cooking, he gets home. 一、用when或者while填空 Margo was talking on the phone, her sister walked in. we visited the school, the children were playing games. · Sarah was at the barber’s, I was going to class. I saw Carlos, he was wearing a green shirt. Allen was cleaning his room, the phone rang. Rita bought her new dog; it was wearing a little coat. 7. He was driving along ________ suddenly a woman appeared. 8. _____ Jake was waiting at the door, an old woman called to him. 9. He was reading a book ______suddenly the telephone rang. 10. ______ it began to rain, they were playing chess. [ 二、用所给动词适当形式填空 11. While Jake __________ (look) for customers, he _______ (see) a woman. 12. They __________ (play) football on the playground when it _____ (begin) to rain. 13. A strange box ________ (arrive) while we _________ (talk). 14. John ____________ (sleep) when someone __________ (steal) his car. 15. Father still (sleep) when I (get) up yesterday morning. 16. Grandma (cook) breakfast while I (wash) my face this morning. 17. Mother (sweep) the floor when I (leave) home. ~ 18. I (read) a history book when someone (knock ) at the door. 19. Mary and Alice are busy (do) their homework. 20. The teacher asked us (keep) the windows closed. 21. I followed it (see) where it was going. 22. The students (play) basketball on the playground from 3 to 4 yesterday afternoon. / 三、完成下面句子，词数不限 1.飞机在伦敦起飞时正在下雨。 It when the plane in London. 2.你记得汶川大地震时你在做什么吗 Do you remember what you when Wenchuan Earthquake . 3.当铃声想起的时候，我们正在操场上玩得很开心。 We on the playground when the bell . 4.当妈妈下班回家时，你在做什么 % when Mum from work 5.当我在做作业时，有人敲门。 I was doing my homework, someone
过去进行时过去进行时表示过去某一时刻或者某段时间正在进行或发生的动作，常和表过去的时间状语连用，如： 1. I was doing my homework at this time yesterday. 昨天的这个时候我正在做作业。 2. They were waiting for you yesterday. 他们昨天一直在等你。 3. He was cooking in the kitchen at 12 o'clock yesterday. 昨天12点，他正在厨房烧饭。 过去进行时的构成： 肯定形式：主语+was/were+V-ing 否定形式：主语+was not (wasn't)/were not (weren't)+V-ing 疑问形式：Was/Were+主语+V-ing。 基本用法： 1. 过去进行时表示过去某一段时间或某一时刻正在进行的动作。常与之连用的时间状语有，at that time/moment, (at) this time yesterday (last night/Sunday/week…), at+点钟+yesterday (last night / Sunday…)，when sb. did sth.等时间状语从句，如： 1）What were you doing at 7p.m. yesterday? 昨天晚上七点你在干什么？ 2）I first met Mary three years ago. She was working at a radio shop at the time. 我第一次遇到玛丽是在三年前，当时她在一家无线电商店工作。 3）I was cooking when she knocked at the door. 她敲门时我正在做饭。 2. when后通常用表示暂短性动词，while后通常用表示持续性动词，而while所引导的状语从句中，谓语动词常用进行时态，如： When the car exploded I was walking past it. = While I was walking past the car it exploded. 3. when用作并列连词时，主句常用进行时态，从句则用一般过去时，表示主句动作发生的过程中，另一个意想不到的动作发生了。如： I was walking in the street when someone called me. 我正在街上走时突然有人喊我。 4. when作并列连词，表示“（这时）突然”之意时，第一个并列分句用过去进行时，when引导的并列分句用一般过去时。如：
Period____8______ in Unit ___6_________ （Period_____20_____Week 4-6）Subject _Grammar (B) Teaching aims To use the Past Continuous Tense with while and when correctly Teaching interesting points of this class: The differences of when and while in Past Continuous Tense Teaching steps: I. Cooperation and intercourse 1. Check the preparation 2. Discuss in groups II. Question and explanation Check the exercises on page 101, and explain the differences between when and while. when和while的区别是： when只能用于一般时态 while可以用于进行时态 when conj. 在...的时候, 当…的时候 when 在绝大多数情况下，所引导的从句中，应该使用非延续性动词（也叫瞬间动词） 例如：I'll call you when I get there. 我一到那里就给你打电话 I was about to go out when the telephone rang.我刚要出门，电话铃就响了。 但是，when 却可以be 连用。 例如：I lived in this village when I was a boy. 当我还是个孩子的时候我住在这个村庄里。 When I was young, I was sick all the time. 在我小时候我总是生病 while 当...的时候 While he was eating, I asked him to lend me $2. 当他正在吃饭时,我请他借给我二美元。While I read, she sang. 我看书时，她在唱歌。 while 的这种用法一般都和延续性动词连用 while 可以表示“对比‘，这样用有的语法书认为是并列连词 Some people like coffee, while others like tea. 有些人喜欢咖啡, 而有些人喜欢茶。 as 当...之时，一边......一边....... I slipped on the ice as I ran home. 我跑回家时在冰上滑了一跤 He dropped the glass as he stood up. 他站起来时，把杯子摔了。 She sang As she worked. 她一边工作一边唱歌。 III. Rumination and evaluation when, as, while这三个词都可以引出时间状语从句，它们的差别是：when 从句表示某时刻或一段时间as 从句表示进展过程，while 只表示一段时间 When he left the house, I was sitting in the garden. 当他离开家时，我正在院子里坐着。 When he arrived home, it was just nine o'clock.
when 和while的用法区别 ①when是at or during the time that, 既指时间点，也可指一段时间； while是during the time that，只指一段时间，因此when引导的时间状语从句中的动词可以是终止性动词，也可以是延续性动词，而while从句中的动词必须是延续性动词。 ②when 说明从句的动作和主句的动作可以是同时，也可以是先后发生；while 则强调主句的动作在从句动作的发生的过程中或主从句两个动作同时发生。 ③由when引导的时间状语从句，主句用过去进行时，从句应用一般过去时；如果从句和主句的动作同时发生，两句都用过去进行时的时候，多用while引导，如： a. When the teacher came in, we were talking. 当此句改变主从句的位置时，则为： While we were talking, the teacher came in. b. They were singing while we were dancing. ④when和while 还可作并列连词。when表示“在那时”；while表示“而，却”，表对照关系。如： a. The children were running to move the bag of rice when they heard the sound of a motor bike. 孩子们正要跑过去搬开那袋米，这时他们听到了摩托车的声音。 b. He is strong while his brother is weak. 他长得很结实，而他弟弟却很瘦弱。 when，while，as引导时间状语从句的区别 when，while，as显然都可以引导时间状语从句，但用法区别非常大。 一、when可以和延续性动词连用，也可以和短暂性动词连用；而while和as只能和延续性动词连用。 ①Why do you want a new job when youve got such a good one already？（get 为短暂性动词）你已经找到如此好的工作，为何还想再找新的？ ②Sorry，I was out when you called me．（call为短暂性动词）对不起，你打电话时我刚好外出了。 ③Strike while the iron is hot．（is为延续性动词，表示一种持续的状态）趁热打铁。 ④The students took notes as they listened．（listen为延续性动词）学生们边听课边做笔记。 二、when从句的谓语动词可以在主句谓语动作之前、之后或同时发生；while和as从句的谓语动作必须是和主句谓语动作同时发生。 1．从句动作在主句动作前发生，只用when。 ①When he had finished his homework，he took a short rest．（finished先发生）当他完成作业后，他休息了一会儿。 ②When I got to the airport，the guests had left．（got to后发生）当我赶到飞机场时，客人们已经离开了。 2．从句动作和主句动作同时发生，且从句动作为延续性动词时，when，while，as都可使用。
While和When在过去进行时中两者的区别如下： ①when是at or during the time that, 既指时间点，也可指一段时间；while是during the time that，只指一段时间，因此when引导的时间状语从句中的动词可以是终止性动词，也可以是延续性动词，而while 从句中的动词必须是延续性动词。 ②when 说明从句的动作和主句的动作可以是同时，也可以是先后发生；while 则强调主句的动作在从句动作的发生的过程中或主从句两个动作同时发生。 ③由when引导的时间状语从句，主句用过去进行时，从句应用一般过去时；如果从句和主句的动作同时发生，两句都用过去进行时的时候，多用while引导，如： a. When the teacher came in, we were talking. 当此句改变主从句的位置时，则为： While we were talking, the teacher came in. b. They were singing while we were dancing. ④when和while 还可作并列连词。when表示“在那时”；while表示“而，却”，表对照关系。如： a. The children were running to move the bag of rice when they heard the sound of a motor bike. 孩子们正要跑过去搬开那袋米，这时他们听到了摩托车的声音。 b. He is strong while his brother is weak. 他长得很结实，而他弟弟却很瘦弱。 when; while 当……时候 while能用when代替; 但是when却不一定能用while代替. while+从句, 动作一定会延续 when+延续性动词/瞬间动词; when he arrived
1、When 和While 的区别 when,while 都有“当……时候”的意思. when 既可表示某一点时间,也可以表示某一段时间. （一）在when 引导的时间状语从句中,其谓语动词可以是延续性的,也可以是非延续性的,可与主句中的谓语动词同时发生,也可在其后发生. 例如： 1、I was just reading a book when she came into my room. 她走进我房间时,我正在看书. （二）、while 只能表示某一段时间,不能表示某一点时间.在while 引导的时间状语从句中,其谓语动词只能是延续性的,而且也只能与主句中的谓语动词同时发生或存在. 例如： 1、While Jim was mending his bike, Lin Tao came to see him. 正当吉姆修自行车时,林涛来看他. Remark: 由when 引导的时间状语从句，主句用过去进行时，从句应用一般过去时；如果从句和主句的动作同时发生，两句都用过去进行时的时候，多用while 引导，如： a. When the teacher came in, we were talking. 2、倒装知识点 完全倒装 表示地点的副词here, there 置于句首, 且主语是名词(不是代词) 时 表示时间、方向的副词或介词短语置于句首, 且主语是名词(不是代词) 时 作表语的形容词、分词、介词短语、such 置于句首时 部分倒装 “ only+状语” 置于句首, 主句需要部分倒装 具有否定意义或半否定意义的副词以及含否定词的介词短语置于句首作状语时“so 或neither + 助动词/情态动词/be 动词+主语”表示“……也/也不” so/such...that...句型 以had/were/should 开头省略if 的虚拟条件句
过去进行时 过去进行时表示过去某一时刻或者某段时间正在进行或发生的动作，常和表过去的时间状语连用，如： 1. I was doing my homework at this time yesterday. 昨天的这个时候我正在做作业。 2. They were waiting for you yesterday. 他们昨天一直在等你。 3. He was cooking in the kitchen at 12 o'clock yesterday. 昨天12点，他正在厨房烧饭。 过去进行时的构成： 肯定形式：主语+was/were+V-ing 否定形式：主语+was not (wasn't)/were not (weren't)+V-ing 疑问形式：Was/Were+主语+V-ing。 基本用法： 1. 过去进行时表示过去某一段时间或某一时刻正在进行的动作。常与之连用的时间状语有，at that time/moment, (at) this time yesterday (last night/Sunday/week…), at+点钟+yesterday (last night / Sunday…)，when sb. did sth.等时间状语从句，如： 1）What were you doing at 7p.m. yesterday? 昨天晚上七点你在干什么？ 2）I first met Mary three years ago. She was working at a radio shop at the time. 我第一次遇到玛丽是在三年前，当时她在一家无线电商店工作。 3）I was cooking when she knocked at the door. 她敲门时我正在做饭。 2. when后通常用表示暂短性动词，while后通常用表示持续性动词，而while所引导的状语从句中，谓语动词常用进行时态，如： When the car exploded I was walking past it. = While I was walking past the car it exploded. 3. when用作并列连词时，主句常用进行时态，从句则用一般过去时，表示主句动作发生的过程中，另一个意想不到的动作发生了。如： I was walking in the street when someone called me. 我正在街上走时突然有人喊我。 4. when作并列连词，表示“（这时）突然”之意时，第一个并列分句用过去进行时，when引导的并列分句用一般过去时。如： 1）I was taking a walk when I met him. 我正在散步，突然遇见了他。 2）We were playing outside when it began to rain. 我们正在外边玩，这时下起雨来了。 过去进行时和一般过去时的用法比较： 1）过去进行时表示过去正在进行的动作，而一般过去时则表示一个完整的动作。 例如：They were writing letters to their friends last night. 昨晚他们在写信给他们的朋友。（没有说明信是否写完） They wrote letters to their friends last night.
as when while 的区别和用法 as when while的用法 一、as的意思是“正当……时候”,它既可表示一个具体的时间点，也可以表示一段时间。as可表示主句和从句的动作同时发生或同时持续，即“点点重合”“线线重合”；又可表示一个动作发生在另一个动作的持续过程中，即“点线重合”， 但不能表示两个动作一前一后发生。如果主句和从句的谓语动词都表示持续性的动作，二者均可用进行时，也可以一个用进行时，一个用一般时或者都用一般时。 1、As I got on the bus，he got off. 我上车，他下车。（点点重合）两个动作都是非延续性的 2、He was writing as I was reading. 我看书时，他在写字。（线线重合）两个动作都是延续性的 3、The students were talking as the teacher came in. 老师进来时，学生们正在讲话。（点线重合）前一个动作是延续性的，而后一个动作时非延续性的 二、while的意思是“在……同时（at the same time that )”“在……期间(for as long as, during the time that）”。从while的本身词义来看，它只能表示一段时间，不能表示具体的时间点。在时间上可以是“线线重合”或“点线重合”，但不能表示“点点重合”。例如： 1、He was watching TV while she was cooking. 她做饭时，他在看电视。（线线重合） 2、He was waiting for me while I was working. 我工作的时候，他正等着我。（线线重合） 3、He asked me a question while I was speaking. 我在讲话时，他问了我一个问题。（点线重合）
when和while的用法和区别 while和when都是表示同时，到底句子中是用when还是while主要看从句和主句中所使用的动词是短暂性动作（瞬时动词）还是持续性动作。 1、若主句表示的是一个短暂性的动作，而从句表示的是一个持续性动作时，两者都可用。如：He fell asleep when [while] he was reading. 他看书时睡着了。 I met him when [while] I was taking a walk in the park. 我在公园散步时遇到了他。 2、若主、从句表示两个同时进行的持续性动作，且强调主句表示的动作延续到从句所指的整个时间，通常要用while。如： Don’t talk while you’re eating. 吃饭时不要说话。 I kept silent while he was writing. 在他写的时候，我默不作声。 3、若从句是一个短暂性动作，而主句是一个持续性动作，可以when 但不用while。如：When he came in, I was listening to the radio. 他进来时，我在听收音机。 It was raining hard when we arrived. 我们到达时正下着大雨。 4、若主、从句表示的是两个同时(或几乎同时)发生的短暂性动作，一般要用when。如： I thought of it just when you opened your mouth. 就在你要说的时候，我也想到了。 至于什么是短暂性动作，什么是持续性动作，其实有个很简单的规律。就是如果是进行时态，一般是持续性的。如果是过去式，一般是短暂性动作。 对于，填写when还是while的问题，通常首先看主句和从句中的时态，再根据以上4个规律来判断填写那个单词。 When和While的区别 通常when 后面接一般过去时while 后面接过去进行时 ①when是at or during the time that, 既指时间点，也可指一段时间，while是during the time that，只指一段时间，因此when引导的时间状语从句中的动词可以是终止性动词，也可以是延续性动词，而while从句中的动词必须是延续性动词。 ②when 说明从句的动作和主句的动作可以是同时，也可以是先后发生；while 则强调主句的动作在从句动作的发生的过程中或主从句两个动作同时发生。 ③由when引导的时间状语从句，主句用过去进行时，从句应用一般过去时；如果从句和主句的动作同时发生，两句都用过去进行时的时候，多用while引导，如： a. When the teacher came in, we were talking. 当此句改变主从句的位置时，则为： While we were talking, the teacher came in. b. They were singing while we were dancing. ④when和while 还可作并列连词。when表示“在那时”；while表示“而，却”，表对照关系。如： a. The children were running to move the bag of rice when they heard the sound of a motor bike.
when 的用法 一、when 用作副词。 1. 用作疑问副词，引导特殊疑问句。(什么时候，何时 [at what time ])例如： ①When will you come to see me? ②When are they going to visit the Great Wall? 2. 用作连接副词，通常用来引导名词性从句[主语从句、表语从句、同位语从句、宾语从句]及起名词作用的“when ＋动词不定式”结构。(什么时候，何时 [at which; on which ])例如： ①When he comes is not known. [主语从句] ②The morning is when I am busiest. [表语从句] ④I don't know when the plane takes off. [宾语从句] ⑤I don't know when to leave for London. [宾语] 3. 用作关系副词，引导限定性定语从句和非限定性定语从句。(在…的时候 [at/on/in/during which])例如： ①Do you still remember the days when we stayed in America? ②The day will come soon when the Chinese astronauts will go to the moon. ③It happened ten years ago, when I was a child. ④We will go to the countryside at the beginning of June, when the summer harvest will start. 二 . when 用作连词。 1. 用作从属连词，意为“当……的时候[at the time when ]”，引导时间状语从句。例如： ①They learned a lot from the peasants when they stayed in the village. ②It was snowing when he arrived at the station. 【点津】如果 when 引导的从句中的主语和主句中的主语一致，且从句中的谓语动词是“be ＋分词”或从句主语是 it ，则 be 动词及其主语常可省略。例如： ③When（ he was ）asked why he was late, he made no answer. ④I'll tell him about it when（ it is ）possible. 2. 用作从属连词，意为“一……就……”，引导时间状语从句。[immediately after]例如： ①We will stand up when the teacher comes into the classroom. 老师一进教室我们就起立。 ②Fire the rockets when I give the signal. 3. 用作从属连词，意为“还没 / 刚刚/刚一……就”，引导时间状语从句。[immediately after]例如： ①I had hardly opened the door when he came in. 我刚一开门，他就进来了。 ②I had not been reading for half an hour when I heard someone call my name. 【点津】hardly…when和no sooner…than的结构要注意三点：意思为“一A就B“；A句通常用完成时态；hardly 和 no sooner 位于句首时要注意部分倒装。 4. 用作从属连词，意为“倘若，如果”，表示条件。例如： ①Turn off the switch when anything goes wrong with the machine. 如果机器发生故障，就把电源关上。 ②He will be likely to recover when he is operated on. 5. 用作从属连词，意为“既然，尽管”，表示让步。例如： ①Why use metal when you can use plastic?既然能用塑料,为什么用金属? ②They kept trying when they knew it was hopeless. 尽管他们知道那件事没有希望，可是他们还在不断地努力。6. 用作并列连词，意为“在那时，届时;就在这时”，表示时间。这时主句中可以用过去进行时，过去完成时或“ was/were about to do sth. ”结构。 ①Last night I was about to go to bed when the phone rang. ②I was cooking in the kitchen when someone knocked at the door. ③He had just finished the book when supper was served. 7. 用作并列连词，意为“虽然、然而、可是”，表示转折。例如： ①He usually walks to work when he might take a bus. 虽然他可 以坐公共汽车上班，但他却常常步行上班。 ②I had only twenty dollars when I needed thirty to buy the dictionary.我需要 30 美元买那本字典，可是我只有20美元。 8. 用作并列连词，意为“而、却”，表示对比。例如： How can he say that everything is fine when it's obvious that it is not? 他怎能说一切都好呢？情况显然不是那样。 三 . when 用作代词[which time]。 when 作为代词常常位于介词之后，意为“那时，什么时候”。例如： ①Since when have you been studying Japanese? 【点津】since when 作引导词时是“介词（since）+关系代词（when）”的结构，when意为which time。since when常引导非限制性定语从句，从句应用完成时态。 ②I came here in 1949, since when I have been engaged in this work. 我1949年到这里，从那时起我就担任这项工作。 ③We came back on Tuesday, since when we have been working in the repair shop. ④We came a week ago, since when the weather has been bad. 四、when 还可用作名词，前面常常用定冠词 the。 the when 表示事 件发生的时间,常常与 the where, the how 并列使用。 He told the police the when and the how of the accident. 他告 诉警察事故发生的时间及发生的原委。 ［巩固练习］ 1. I remember ______ this used to be a quiet village. A. when B. how C. where D. what 2. Why do you want a new job _____ you've got such a good one already? A. that B. where C. which D. when 3. It was an exciting moment for these football fans this year, ______ for the first time in years their team won the World Cup. A. that B. while C. which D. when 4. We are living in an age _______ many things are done on computer. A. which B. that C. where D. when 5. The reporter said that the UFO ______ east to west when he saw it. A. was travelling B. travelled C. had been travelling D. was to travel 6. ______ got into the room _________ the telephone rang. A. He hardly had; then B. Hardly had he; when C. He had not; than D. Not had he; when 7. ---- Can I join your club, Dad? ---- You can when you _______ a bit older. A. get B. will got C. are getting D. will have got 8. I shall never forget those days ________ I lived in the countryside with the farmers, ________ had a great effect on my life. A. that; which B. when; which C. which; that D. when; who 9. The film brought the hours back to me ______ I was taken good care of in that faraway village. A. until B. that C. when D. where 10. He was about to tell me the secret ______ someone patted him on the shoulder.