Period 3 Section A Grammar focus
Teaching Aims:
Students sum up the usage of when and while in the past progressive tense by observing the different context and can use them correctly. Teaching Procedure:
Step 1 lead-in
Present two sentences from the textbook with when and while.
Ask students if they can tell the differences between when and
while in past progressive tense.
Step 2 Presentation
1. Present two sentences with when and fill in the blanks to conclude the usage of when.
① I was walking to school when I saw a cat in a tree.
② When Sally arrived home, her mother was cleaning the house.
主句的动作是持续性的，而从句动作是短暂性的，此时用
_______引导时间状语从句，主句用_____________时态，
从句用一般过去时态。
2. Present sentences with while and fill in the blanks to summarize the usage of while.
③ While I was sleeping in the bedroom, someone knocked at the door.
④ David fell while he was riding his bike.
主句的动作是短暂性的，从句的动作是持续性的，此时用
_________引导从句，主句用____________时态，从句用
过去进行时态。
⑤While Andy was waiting for the bus, he was reading a newspaper.
⑥ He was cleaning his car while I was cooking.
主句和从句的动作在过去的某时刻或某段时间同时发生，
而且动作都是持续性的，此时用_________引导从句，而且
主句和从句都用_____________时态。
3. Conclude the differences between when and while.
Step 7 Exercises
Fill in the blanks with when and while.
Step 8 Summary
Blackboard Design:
When While
1.主句（一般过去时）+ while + 从句（过去经行时）
2.主句（过去经行时）+ when + 从句（一般过去时）
3.主句（过去经行时）+ while + 从句（过去经行时）
4.主句（一般过去时）+ when + 从句（一般过去时）
Summary 3 Past Co nti nuous Tense 过去进行时总结 I. Defin itio n 时态含义 表示过去某一时刻或过去一段时间内正在进行的动作。 II. Time words 时间标志词 1. then, at that time, this time yesterday, at 6 o ' clock yesterday ... 2. when/ while/ (just) as 引导的时间状语从句 III. Structure 动词结构 was/ were + doing ? Whe n/ while/ (just) as 引导的时间状语从句在过去进行时态中的用法区别 1. when既可以和短暂性动词连用，也可以和连续性动词连用, 句中一般翻译为“当...... 时候” / “就在那时”。 a. Some one kno cked at the door whenI was hav ing breakfast. b. I was tak ing a bath whenthe teleph one rang. 2. while只可以和连续性动词连用 句中一般翻译成“当...... 时候”(=wheri) / “然而”(强调前后两个动作同时进行) a. He cut himself while he was shaving. b. My wife was cooking the dinner while I was working in the garden. 3. (just) as 更强调“随着”，所引导的从句动作一般与主句动作伴随着发生。 a. Just as I was ope ning the front door, the teleph one rang. b. The children were singing as they went home.
初三英语过去进行时测试卷(有答案)1 一、过去进行时 1．When I saw her on the way here, he a magazine. A. reads B. is reading C. was reading D. will read 【答案】 C 【解析】【分析】句意：当我在路上看到他的时候，她正在读一本杂志。在含有时间状语的复合句中，时间状语从句是一般过去时，延续性动词在主句用过去进行时。故选C。【点评】考查动词的时态，本题涉及过去进行时的应用，以及在含有时间状语的复合句中，时间状语从句是一般过去时，延续性动词在主句用过去进行时。 2．—Paul, what were you doing at nine Last night? —I a movie in the cinema with my friends. A. was watching B. watch C. have watched D. will watch 【答案】A 【解析】【分析】句意：——Paul，昨天晚上九点钟你在做什么？——我正在和朋友们一起在电影院看电影。根据句中的时间状语at nine last night昨晚九点，可知是过去的时间。表示在过去某个时刻做的事情使用过去进行时态，was/were +现在分词，故选A。 【点评】考查过去进行时态，注意过去进行时的用法和结构。 3．I saw him in the library yesterday. He a book at that moment. A. reads B. is reading C. was reading D. will read 【答案】 C 【解析】【分析】at that moment 意为“在那时”，表示过去的时间点，表示过去某一时间正在进行的动作,用过去进行时，故选C。句意是：我昨天在图书馆里看见他了，那时他正在看书。 【点评】本题考查过去进行时的用法。 4．—Where were you when I called? — I on the bed． A. lied B. was lying C. lay D. was laying 【答案】B 【解析】【分析】句意：－我打电话里，你在哪儿？－我躺在床上。你打电话时，我正躺在床上。A，lied一般过去时B，was lying过去进行时C，lay动词原形D，was laying过去进行时。表示一个过去动作发生时，另一个过去动作正在发生，句子用过去进行时态。lie的现在分词是lying。故选B。 【点评】本题考查动词时态辨析，以及was lying；was laying两个词义和用法。
Unit 1 When were you born? 1.swimmer(swim, swam ,swum swimming)游泳者，游泳运动员 Ye Shiwen is a well-known s_________. 2.born( bear, bore, born) be born出生，出世 He was b_______in 1999./ He was b_____ in May 1999./ He was b____ on May Day, 1999. 3.ice (icy) 冰 He stood in the box of i______ for two days ,fifteen hours and forty-two minutes. 4.tower 塔 He stood on the t______ for one day and eleven hours. 5.admire 欣赏，仰慕guy 家伙，男人，小伙子 I a_________ that g________with great talent. 6.paint (painting) 用颜料画 He p________ pictures on the ground or on buildings. When did he started p____these pictures? 7.flat 水平的，平坦的 The pictures are f_________, but they look like they are 3D. 8.get in trouble 遇到麻烦 He sometimes got in t________for p_______the buildings at school. 9.Nobel Prize 诺贝尔奖literature 文学 Chinese writer Mo Yan has won the 2012 N______ P_______in L_______! Mo Yan won the N______ P_____ in L_____ in 2012. 10.as 因为，由于 Mo said he never expected to win the prize , a___ there were so many good writers all over the world. 11.drop out of school 辍学 When he was 12 (At the age of 12/, he d_______ o____ o___ school and started to work, first in his village and later in a factory. 12.means 方式，方法，途径try every means to do辍学 He had to try every m_______to find books to read. 13.at hand（时间或空间上）接近的，不远的 With no books at h_______, he started reading a Chinese dictionary. 14.publish 出版 His first short story was p______ in 1981. 15.novel 小说sorghum高粱director导演 He became famous in 1987 when his n______ Red S______was made into a film by the famous d______ Zhang Yimou. 16.frog 蛙 He also won the 18th Mao Dun Literature Prize in 2011 for his novel f_______. 17.works 作品，著作 More and more people are becoming interested in his w_______. 18.besides (except)除----之外 What other prize in literature did Mo Y an win b_______ the Nobel Prize. 19.perform(performance, performer) 表演，演出opera 戏剧 Mei Lanfang first f_______Beijing O________at the age of ten. 20.Brazilian 巴西的，巴西人national(nation, international,) 国家的，民族的 Ronaldo , the great B_________soccer player , played for his first n________team when he was 17 years old.
when和while的用法解析、练习题及答案（附总结表格） 一、讲解三例句: 1. The girls are dancing while the boys are singing. 2. Lucy’s mother is cooking when she gets home. 3. When/While Lucy’s mother is cooking, she gets home. 二、用when或者while填空 1.______ Margo was talking on the phone, her sister walked in. 2.______ we visited the school, the children were playing games. 3.______ Sarah was at the barber’s, I was going to class. 4.______ I saw Carlos, he was wearing a green shirt. 5.______ Allen was cleaning his room, the phone rang. 6.______ 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. ______ it began to rain, they were playing chess. 10. She saw a taxi coming ______ the woman was waiting under the streetlight. 三、语法 while和when都是表示同时，到底句子中是用when还是while主要看主句和 从句中所使用 的动词是短暂性动作(瞬时动词)还是持续性动作。 1、若主句表示一个短暂性动作，而从句表示的是一个持续性动作时，用 When/While。如: He fell asleep when while he was reading. 他看书时睡着了。
八年级英语The Summer holidays are coming Section B Prepare lesson before class预习提示 一、词组翻译 1、春城 2、做某事的最好时间/时节 3、应该做某事 4、不该做某事 5、听起来有趣 6、等等 7、外出旅行8、随时做某事 二、完成句子 1、Kunming is （春城）。 2、I think （你可以随时去）。 3、（我该游览什么地方）in Yunnan? 4、You （不该错过）Yawushan. 5、It （听起来真有趣）. 6、You should （带上照相机、一 些钱等等）. Teaching aims and demands教学目标 1、复习假日计划表达方式； 2、学习旅行所携带物品的表达方式； 3、学习制订旅行计划； 4、学习用should提建议。 Teaching procedure教学重点及难点 1、能独立制订旅行计划； 2、should表建议用法。 Teaching procedure教学设计 Step 1 Review（复习） 1.Review the description of the travel plans in Section A 1a: What are their holiday plans? Where do they want to go? Why do they want to go there? Michael wants to go to Australia because…
Maria plans to go back to Cuba because… Jane wants to stay in China because… 2、Ask the students to make up a dialog, using the words and expressions in Section A 1a. 3、Ask the students to say something about their holiday plans. Step 2 Presentation（呈现） 1、Go on learning about what they should take if they go on a trip.（When presenting the new words, the teacher can prepare umbrella, camera and other things for students.） 2、Learn the trip items. Teacher asks: What do they want to take? Listen to 2 and number the items, finish it. 3、Write the key words on the blackboard: the best time, weather, famous places, cost, things to take. Listen to la and help the students to understand la with the key words and phrases. 4、Listen to la again and finish lb. 5、Explain the use of “should/shouldn’t”. Step 3 Consolidation（巩固） 1、Listen to 1a and read after it, paying attention to the pronunciation and intonation. 2、Talk with the tape. 3、Pair work. Practice 1a. Step 4 Practice（操练） 1、Act 1a out and make up a dialog like 1a. 2、The students prepare a map and discuss 3a between the deskmates. The make trip plans and imitate 3a to make a chart. Step 5 Summary（课堂小结） 本节课我们学习了如何制订旅行计划，应熟练掌握：
【英语】过去进行时综合测试（含答案） 一、过去进行时 1．- What were you doing when we were playing basketball yesterday afternoon? - I ______ the classroom. A. was cleaning B. have cleaned C. will clean D. clean 【答案】 A 【解析】【分析】句意：——昨天下午当我们正在打篮球时你正在干什么? ——我正在打扫教室。根据"What were you doing when we were playing basketball yesterday afternoon? "中的"What were you doing"可知问的是过去的某个时间点正在发生的事，要用过去进行时，其构成：主语+was/were+ doing．故选A。 【点评】考查过去进行时，注意根据时间状语判断时态。 2．—Hi, I didn't see you at the party in the company yesterday evening. ——Oh, all my family my son's birthday at home. A. celebrated B. have celebrated C. was celebrating D. were celebrating 【答案】 D 【解析】【分析】句意:一一你好，明天晚上公司的晚会上我没有见到你。一一哦，我全家在家庆祝我儿子的生日。昨天晚上公司开晚会时，我们正在家里庆祝儿子的生日，表示一个过去动作发生时，另一个过去动作正在发生，用过去进行时态。family是集合名词，指家的整体，看作单数，作主语，谓语用单数;强 调所有的成员，看作复数，作主语，谓语用复数。本题强调所有的家人都在为我儿子庆祝生日，看作复数。故选D。 3．Tom said he ____basketball with his classmates from 4:00 to 6:00 yesterday afternoon. A. is played B. was playing C. plays D. had played 【答案】 B 【解析】【分析】句意：汤姆说他昨天下午4点到6点正在和同学一起打篮球。A.被打；B.正在打；C.打，三单式；D.打，过去完成时。根据from 4:00 to 6:00 yesterday afternoon可知用过去进行时，其构成为was/ were doing，主语是he，第三人称单数，be动词用was，故答案选B。 【点评】考查动词的时态。注意过去进行时的用法。 4．I saw him in the library yesterday. He a book at that moment.
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。
过去进行时，是表示过去某时正在进行的状态或动作。 用法： 一、过去进行时的主要用法是描述一件事发生的背景；一个长动作发生的时候，另一个短动 作发生。常用的时间状语this morning, the whole morning, all day yesterday, from nine to ten last evening, when, while例如： We were watching TV from seven to nine last night. 昨天晚上七点到九点的时候我们在看电视。 What was he researching all day last Sunday? 上周日他一整天都在研究什么？ My brother fell while he was riding his bicycle and hurt himself. 我哥哥骑自行车的时候从车上摔下来，受伤了。 It was raining when they left the station. 他们离开车站的时候天正在下雨。 When I got to the top of the mountain, the sun was shining. 当我到达山顶的时候，阳光灿烂。 二、过去进行时可以表示在过去某个时间点发生的事情。时间点可以用介词短语、副词或 从句来表示。如： What was she doing at nine o'clock yesterday? 昨天晚上九点她在做什么？(介词短语表示时间点) When I saw him he was decorating his room. 当我看见他的时候他正在装饰房间。(when从句表示时间点) 三、在复合句中，如果主要动作和背景动作都是延续的或同时发生的，那么主从句的动词 都可用过去进行时。例如： While he was waiting for the bus, he was reading a newspaper. 他边等车边看报。(两个动作都是延续的) He was cleaning his car while I was cooking. 他擦车时我在做饭。(两个动作同时进行) 四、通常不能用于过去进行时的动词主要有：agree, be, believe, belong, care, forget, hate, have(拥有), hear, know, like, love, mean, mind, notice, own, remember, seem, suppose, understand, want, wish等。例如： 误：I was knowing the answer. 正：I knew the answer. 我知道答案。 误：I wasn't understanding him. 正：I didn't understand him. 我不明白他的意思。
九年级英语英语过去进行时测试卷(有答案) 一、初中英语过去进行时 1．—I called you at 8:00 last night, but you didn't answer.—Oh, I ________. A. took a shower B. was taking a shower C. am taking a shower D. take a shower 【答案】 B 【解析】【分析】句意：——昨天晚上我八点给你打电话，但是你没有接。——哦，我当时正在洗澡。A.一般过去时;B.过去进行时;C.现在进行时;D. 一般现在时。根据上句给出的时间可知回答的是昨天晚上八点正在洗澡，用过去进行时，故选B。 2．Amon ____________ his ship in a big storm when a giant fish came out of the sea. A. will sail B. is sailing C. was sailing D. has sailed 【答案】 C 【解析】【分析】句意：当一条大鱼从海中跳出来时，阿蒙正驾船在大暴雨中航行。根据when a giant fish came out of the sea，可知当鱼跳出来时阿蒙正在驾船航行。 when引导时间状语从句，表示在过去，当从句的动作发生时，主句的动作在当时也正在进行。主句的时态是过去进行时，故选C。 【点评】此题考查过去进行时。when引导时间状语从句，注意主句的时态。 3．Students in Grade Nine ____________a maths exam at this time yesterday. A. take B. are taking C. were taking D. have taken 【答案】 C 【解析】【分析】句意：昨天的这个时候，九年级的学生正在参加数学考试。根据at this time yesterday. 可知这是一个过去的具体的时刻，过去的具体时刻出现的句子应使用过去进行时，C是过去进行时，故答案是C。 【点评】考查过去进行时，注意at this time加过去的时间范围用于过去进行时。 4．—Didn't you hear Dad call you? —No, I didn't. I ______ with Jack on the phone. A. am talking B. would talk C. have talked D. was talking 【答案】 D 【解析】【分析】句意：——难道你没有听到爸爸给你打电话吗？——是的，我们没有听到。那时我正在和杰克电话聊天。A.正在聊天，现在进行时；B.将聊天；C.聊天，现在完成时；D.正在聊天，过去进行时。爸爸打电话时，作者正在聊天，动作发生在过去，用过去进行时，故选D。 【点评】考查动词的时态和形式。注意过去进行时的用法。 5．——I called you last night , but you didn't answer. ——Sorry, Grace. I________I am A
过去进行时（讲义） 【知识点睛】 一、过去进行时基本结构及句型句式转换 二、过去进行时用法： 1．过去某一时刻正在进行 2．过去某一段时间正在进行 3．过去进行表示过去将来三 、when 和 while 的异同 1．相同点：当时间状语从句为过去进行时时||，二者通用． 2．不同点： 1)当主句在前||，表示事情发生的背景氛围时||，when 表示突然； 2)while 表示一段时间||，动词多为可持续性的． 四、学海拾贝 五、综合训练 附：常见的延续性动词和终止性(非延续性或瞬间性)动词 延续性动词终止性(非延续性或瞬间性)动词 延续性动词表示的动作不但可以延续||，而且可以产生持久的影响||。它表示的动作不能延续||，也就是说动作一旦发生就立即结束||，并产生某种结果||。 be||，have||，keep||，know||，learn||，lie||， live||，read||，sing||，sleep||，stand||，stay||， wait||，walk||，watch 等．accept||，arrive||，become||，begin||，borrow||，break||，buy||，catch||，close||，come||，die||，end||，fall||，finish||，get||，give||， go||，join||，leave||，put||，reach||，receive||，shut||，start||， 【学海拾贝】 Lesson 7 Too Late The plane was late and detectives /di'tektiv/ were waiting at the airport all morning．They were expecting /ik'spekt/ a valuable /'v?lju?bl/ parcel /'pɑ:sl/ of diamonds /'dai?m?nd/ from South Africa ．A fe w hour s earlier||，s omeone had told the police that thieve s 第1页/共9页
【初中英语】过去进行时练习题人教版 一、过去进行时 1．When I saw her on the way here, he a magazine. A. reads B. is reading C. was reading D. will read 【答案】 C 【解析】【分析】句意：当我在路上看到他的时候，她正在读一本杂志。在含有时间状语的复合句中，时间状语从句是一般过去时，延续性动词在主句用过去进行时。故选C。【点评】考查动词的时态，本题涉及过去进行时的应用，以及在含有时间状语的复合句中，时间状语从句是一般过去时，延续性动词在主句用过去进行时。 2．When we got off the train this morning, it heavily. A. rains B. rained C. is raining D. was raining 【答案】 D 【解析】【分析】句意：当我们今天早上下火车的时候，雨下的很大。根据got off和this morning，可知时间状语从句的时态是一般过去时，主句应是过去进行时，故选D。 【点评】考查过去进行时，识记过去进行时的使用方法。 3．—Didn't you hear Dad call you? —No, I didn't. I ______ with Jack on the phone. A. am talking B. would talk C. have talked D. was talking 【答案】 D 【解析】【分析】句意：——难道你没有听到爸爸给你打电话吗？——是的，我们没有听到。那时我正在和杰克电话聊天。A.正在聊天，现在进行时；B.将聊天；C.聊天，现在完成时；D.正在聊天，过去进行时。爸爸打电话时，作者正在聊天，动作发生在过去，用过去进行时，故选D。 【点评】考查动词的时态和形式。注意过去进行时的用法。 4．—Sam, what will the weather be like tomorrow? —Sorry, Mum. I didn't watch the weather forecast just now. I________a football match. A. was watching B. am watching C. would watch D. will watch 【答案】 A 【解析】【分析】句意：---山姆，明天天气怎么样？---抱歉妈妈，我刚才没有看天气预报，我在看足球赛。根据前一句的just now可知此处用过去的某种时态。根据语境可知，山姆在播放天气预报的时候正在看足球赛，错过了天气预报，所以此处用过去进行时，故答案为A。 【点评】考查动词的时态，理解语境，根据时态的定义去确定时态的形式。
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）
九年级英语过去进行时试题集 一、初中英语过去进行时 1．—Did you watch the football match on TV last night? —I wanted to, but my mother her favorite TV programme. A. watches B. watched C. was watching D. had watched 【答案】 C 【解析】【分析】句意:一昨晚你在电视上看足球比赛了吗?一我想看，但我的母亲在看她最喜欢的电视节目。A.第三人称单数形式;B.过去式或过去分词;C.过去进行时形式;D.过去完成时形式。根据语境，所以选C。 2．— I called you last night, but nobody answered. Where were you then? — Oh, I ____________ my pet dog in my yard. A. walked B. was walking C. am walking D. will walk 【答案】 B 【解析】【分析】句意：——昨晚我给你打电话了，但是没人接，那时你在哪里？——哦，我在院子里正在遛我的宠物狗。A.一般过去时；B.过去进行时；C.现在进行时；D.一般将来时。根据Where were you then，可知是昨晚打电话那时正在遛狗，所以用过去进行时，故选B。 【点评】考查过去进行时，注意平时识记，理解句意。 3．I saw him in the library yesterday. He a book at that moment. A. reads B. is reading C. was reading D. will read 【答案】 C 【解析】【分析】at that moment 意为“在那时”，表示过去的时间点，表示过去某一时间正在进行的动作,用过去进行时，故选C。句意是：我昨天在图书馆里看见他了，那时他正在看书。 【点评】本题考查过去进行时的用法。 4．When we got off the train this morning, it heavily. A. rains B. rained C. is raining D. was raining 【答案】 D 【解析】【分析】句意：当我们今天早上下火车的时候，雨下的很大。根据got off和this morning，可知时间状语从句的时态是一般过去时，主句应是过去进行时，故选D。 【点评】考查过去进行时，识记过去进行时的使用方法。
When和while在初中英语学习中的要点归纳when 既可用作副词，又可用作连词，也可用作代词。由于when 的用法是既是学生学习的重点难点，又是中考考试考查的热点之一。下面就when 的用法作如下归纳： 一、用作疑问副词，意思为“什么时候、何时”，引导特殊疑问句或后跟动词不定式。例如： When will you come to see me? 你什么时候要来看我？ When are they going to visit the Great Wall? 他们打算什么时候去游览长城？ I don't know when to leave for London. 我不知道该在何时动身去伦敦。 二、when 用作连词，意为“当……的时候”，引导时间状语从句。 When 在引导时间状语从句时，主从复合句的时态相互制约，要保持主从复合句时态的大体一致。也就是说，要么都是现在时态，要么就是过去时态。现在时态包括：一般现在是、一般将来时、现在进行时以及现在完成时；过去时态包括：一般过去时、过去进行时、过去将来时和过去完成时。when在构成时间状语从句时，主要有以下特点： 1.when后面所跟的句子不可能运用现在进行时、过去进行时、现在完成时、过去完成时、一般将来时以及过去将来时。 2.主句+ when +从句，时态制约如下： （1）主句用一般将来时，从句用一般现在时，如： Jim will ring you up when he comes back. 当吉姆回来的时候，他将给你打电话。 （2）主句用情态动词原形，从句用一般现在时，如： She can help me with my English when she has time. 当她有空的时候，他能帮助我学习英语。 （3）主句是祈使句，从句用一般现在时，如： Please leave here when I begin working.当我开始工作的时候，请离开这儿。 （4）主句用一般过去时，从句用一般过去时，如： They learned a lot from the peasants when they stayed in the village. 他们住在那个村子时，从农民那里学到了许多东西。 （5）主句用过去进行时，从句用一般过去时，如： It was snowing when he arrived at the station. 他到达车站时，天正下着雪。
过去进行时专项练习 一、单项选择 1.My brother ___ while he ___ his bicycle and hurt himself. A. fell, was riding B. fell, were riding C. had fallen, rode D. had fallen, was riding 2. Tom ___ into the house when no one ___. A. slipped, was looking B. had slipped, looked C. slipped, had looked D. was slipping, looked 3.The last time I __ Jane she ___ cotton in the fields. A. had seen, was picking B. saw, picked C. had seen, picked D. saw, was picking 4.I don ' t think Jim saw me; he ___ into space. A. just stared B. was just staring C. has just stared D. had just stared 5.I first met Lisa three years ago. She ___ at a radio shop at the time. A. has worked B. was working C. had been working D. had worked 6.---Hey, look where you are going! ---Oh, I ' m terribly sorry.________. A. I ' m not noticing B. I wasn ' t noticing C. I haven ' t noticed D. I don ' t notice 7. The reporter said that the UFO ___ east to west when he saw it. A. was traveling B. traveled C. had been traveling D. was to travel 8. I ___ my breakfast when the morning post came. A. had B. had been having C. have been having D. was having 9.When I arrived at his office, he ___ on the phone. A. was speaking B. spoke C. had been speaking D. had spoken 10. “ What ' s the matter,Ali? You look sad. ” “ Oh, nothing much. As a matter of fact, I ___ of my friends back home. ” A. just thought B. have just been thinking C. was just thinking D. have just thought 二、动词填空。 １．John_______（work） all day yesterday. ２．He _______（walk） home when the （rian）_______begin. ３．—What______you _______（do） at ten o'clock yesterday﹖ —I_______（studay） in class． ４．When Harry _______（have） breakfast Lily _______（telephone） him． ５．When I ________ （go） to school this morning I ______ （see） a car running into a bus． 6. This time yesterday Jack ______ (mend) his bike. 7. I ______ (write) a letter at ten last night. 8. It was six. The Greens ______ (have) supper. 9. When you ______ (knock) at the door yesterday,I ______ (do) some washing. 10. While my mother ______ (watch) TV, I ______(make) a kite. 三、英汉互译。