强调句型
It is (was) +被强调部分+ that (who)+ 句子其他部分。
1.It is + 被强调部分+ that ...
该句型是强调句型。将被强调的部分放在前面，其它部分置于that之后，被强调部分可以是主语，宾语，表语或状语，强调的主语如果是人，that可以由who换用。如果把这种句型结构划掉后，应该是一个完整无缺的句子；这也是判断强调句型与其它从句的方法。
It was they that (who) cleaned the classroom yesterday. It was in the street that I met her father.
2. It is not until + 被强调部分+ that ...
该句型也是强调句型。主要用于强凋时间状语，译成汉语“直到…才…＂，可以说是not ... until ... 的强调形式。
It was not until she took off her dark glasses that I realized shewas a famous film star.
= Not until she took off her dark glasses did I realize she was
= I didn’t realize she was a famous film star until she took off
3. 强调句型的句式变换
1）强调句型的一般疑问句形式
句式特征：Is/ Was it +被强调部分+ that…
2）结合特殊疑问词构成特殊疑问句形式
句式特征：特殊疑问词+is/was it that…？
?例句：
?How is it that she turned down our help? 什么原因使得…？
?Where was it that you met Tom yesterday? 究竟在哪…？
?When was it that you met him in the park? 究竟何时…？
?When and where was it that you got to know Mary? 究竟在何时何地…？
?Who was it that that came up with the bright idea? 究竟是谁…？
?Which book is it that you want to buy? 究竟是哪一本书…？
?Whose umbrella was it that you took away? 到底是谁的伞…？
3）在强调句型中考察主谓一致与比较结构。
在强调句型中，有时也考察用rather than，not …but…等连接的平行对比结构，此时既要注重比较结构，又要注意主谓一致，属于较复杂的句式。
句式特征为：It is/was not…but…that… ; 不是…而是…（that后的动词与but后的名词或代词保持一致）
It is /was … not … that… ; 或者：It is/was…that… not …;
是…而不是…（that后的动词应与not前的名词或代词保持一致）
It is/was … rather than… that… ;
是…而不是… ( that后的动词应与rather than前的名词或代词保持一致)
4）强调句型的形近句型
(1) It be +被强调部分+that+… 是强调句型。去掉it，be，that后，剩余部分
仍能组成一个完整的句子。如：
It is probably due to these skills that they have been offered a wide variety of positions. 本句去掉it，be，that后可转化成：Probably due to these skills they have been offered a wide variety of positions.
(2) It+ be+ adj. / n. / 过去分词+that从句句型。该句型中的It是形式主语，
that引导的从句是真正的主语从句。如：
?It is important that he (should) learn English well.
?It is a fact that he can speak both English and Japanese.
?It is suggested that he leave his office right now.
(3) “It be +时间段+since……”句型。如果since和延续性动词连用，则意为“某
人不做某事已有多久了”；如和短暂动词连用，则为“某人做某事已有多久了”。如：?It is two months since he fell ill. 他病了两个月了。
?It is two months since he was ill. 他病好已经两个月了。
（4）It be+时间段+before……句型表示“……多久后某事发生”。
?It was a long time before they met again. 很长时间后他们才见面。
?It was not long before he came back. 时间过不久他们就回来了。
（5）“It be…when……”句型表示“某事发生时正是……时候”
?It was 1949 when the PRC was founded. 试比较强调句型句：
?It was in 1949 that the PRC was founded. (去掉it，was，that后仍是一个完整的句子)
It 的用法
一、代词it
1.用作人称代词代替上文提到过的人或事物，（有时不特指某件事物，而代表前面已提到的或者将会发生的某件事情，或者是谈话双方都明白的情况，如前面第2题）
2. 用作指示代词，（起着this 或that 的作用）指一个人或一件事情。
-- what is this?
-- It’s a telephone.
-- who’s on the telephone?
-- It’s Lily.
3. 指时间、距离、价值、天气和自然现象等。
It is cold today , isn’t it?
It is about an hour’s ride to the park.
二、引导词it
1.It 常作形式主语，把真正的主语置于句后，真正的主语通常为不定式、动名
词、主语从句。
It is easy to buy a new radio.
It is no use telling him that.
It is strange that nobody knows her
提示：it 作形式主语，that从句作真正主
语，常见的句型有：
2.It be + 形容词（obvious, natural, surpri-sing, good, wonderful,
funny, possible, likely, certain, probable, etc.) + that 从句
3.It be + 名词词组（no wonder, an honor, a good thing, a pity, no
surprise, etc. ) + that 从句
4.It be + 过去分词（said, reported, thought, expected, decided,
announced, arranged, etc.) + that 从句
倒装句
?英语句子通常有两种语序：一种是陈述语序，一种是倒装语序。
?将谓语的一部分或全部置于主语之前的语序叫做倒装语序。
?倒装可分为二种：将整个谓语提到主语之前的叫完全倒装（full inversion）；
?而只将be 、情态动词或者助动词放在主语之前的叫做部分倒装（partial inversion）。
一、完全倒装
1. There be结构。另外,在此结构中可以用来代替be动词的动词有:exist, seem,
happen, appear, live, rise, stand等。如:
There stood a dog before him.
There exist different opinions on this question.
2．
(1).在以here、there、now、then等副词开头的句子里。
“Here, There, Now, Then + come (或be,go,lie,run) + 主语" 结构。
Here comes the old lady!
Then came the hour we had been looking forward to.
There comes the bus.
Now comes your turn.
如果主语是人称代词,就不用倒装。如:
Here you are.
There she comes.
(2). 表示方向的副词out, in, up, down等置于句首,要用全部倒装。如果主语是人称
代词,就不用倒装。如:
In came Mr. White.
Up went the arrow into the air.
Away went the boy.
二、部分倒装
部分倒装是把be动词、情态动词、助动词放到主语之前。如果句子中没有这些词,要在主语之前加助动词do / does / did等,而把原来的谓语动词变成原形放在主语之后。
1. 句首状语为否定词或半否定词的句子。
这类词或短语主要有never, neither, nor, little, seldom(很少，不常）, rarely（很少，罕有）, hardly, scarcely（几乎不，简直没有）, no sooner（立即）, not only, in no way（决不）, at no time, few, not, no等, 如:
Not a word did I say to him.
Never have I found him so happy.
Little does he care about what I said.
I can't swim. Neither can he.
No sooner had he gone to bed than he
fell asleep.
2. only + 状语放在句首,要部分倒装。如:
Only by this means is it possible to explain it. (介词短语)
Only then did I realize the importance of math. (副词)
Only when the war was over in 1918 was he able to get happily back to work. (从句)
3. so或so引导的短语放在句首,要部分倒装。
I saw the film, so did she.
So loudly did he speak that even people in the next room could hear him.
4. "Not only + 分句,but also + 分句"句型中的前一分句要部分倒装。如:
Not only does John love Chinese, he is also good at speaking it.
但not only...but also...连接主语时,不倒装。如:
Not only the mother but also the children are sick.
5. Not until放在句首,从句不倒装,主句倒装。如:
Not until last week did they find the lost bike. (简单句)
Not until my son had entered the university did he realize the importance of time. (复合句)
在带有倒装句的复合句（或并列句）中，到底应在何处倒装，不少初学者觉得难以掌握。下面的顺口溜可以帮助你较容易地掌握其结构形式。
NB前倒后不到①，
O，NU主倒从不倒②，
2N前倒后也倒③，
NM前后均不倒④。
?①NB代表Not only…，but also…引导的并列句。not only位于句首时，所引导的前面的分句倒装，后面的分句不倒装。故此称为“前倒后不倒”。如：?1）Not only did he come，but also he was very happy．
?2）Not only was everything that he had taken away from him ，but also his German citizenship（was taken away）．
?②O代表only＋状语从句；NU代表Not until＋状语从句。此两种结构位于句首时，倒装主句而不倒装从句，即：“主倒从不倒”。如：
?1）Only when he told me did I know it．
?2）Not until I began to work did I realize how much time I had wasted．
?No sooner…than…，Hardly／Scarcely…when…等句型也属此类用法。
如：
?No sooner（Hardly）had we reached home than（when）it began to rain．
?③2N代表Neither…nor…所引导的并列句。2N若位于两分句之首，则前后分句均倒装。即“前倒后也倒”。如：
?Neither do I know her name，nor does he.
?④NM即No matter…引导的状语从句。此时前面从句及后面主句均不倒装。即“前后均不倒”。如：
?No matter how busy he is，he always comes to help us．
It作形式主语常见句型 1.It + be +形容词+ that-从句 可用于此句型的形容词有: wonderful, true，good，right，wrong，（un）important，useless，surprising，disturbing,frightening,alarming,clear，unusual，lucky，certain, necessary等。如： ①It is quite certain that he will be at the meeting.他将出席会议是无疑的。 ②It is surprising that he came late to school this morning.他今天早上迟到真令人惊讶。 ③It is important that we (should) study hard.我们努力学习是很重要的。 注意: 该句型中的形容词是（un）important, necessary等时，从句应为(should )+动词原形。 It is important that we (should) learn English well. It is necessary that he (should) rember these words. 2.It + be +名词+ that-从句 适用该句型的名词（词组）有: a pity，an honor，a good thing，a fact，a surprise，a question,a shame,a custom, a truth,our hope, no wonder, good/bad manners等。如： ①It is a pity (that) you missed the sports meeting last week.你错过了上周的运动会太可惜了。 ②It is a fact that Engl ish is being accepted as an international language.事实上英语已经被作为一种国际语言而接受了。
It用法和强调句 典型例句： 1.---Who is knocking? “---谁在敲门？” ---It must be Li Hong. (不用she). “---肯定是李红。” 比较：---Who is that girl？“---那个女孩是谁？” ---She is Li Hong. “---她是李红。” 注：it作实义代词，代替前面提到过的人、事、物。指代人时，常用于小孩或身份、性别不明的人。 2.Our computer is stolen. Have you heard about it? 我们的计算机被偷了。你听说过这事了吗？ 与下列句子进行比较： （1）As they are retired, Mr.and Mrs. Scott prefer a house in the country to spend their late years to one in a large city. 由于退休了，Scott先生和夫人更想要座乡下的房子而不愿要大城市的来度过晚年。 （2）Few pleasures can equal that of a cool drink on a hot day. 很少有乐趣能同热天的一杯冷饮相等同。 3.It’s half an hour’s ride from here to the station. 从这里到车站开车要半个小时。 It’s midnight when my father came back. 我父亲回来的时候是半夜。 比较：It’s at midnight that my father came back. 是在半夜的时候，我父亲回来的。 4.It took me more than 3 days to finish all the hard work. 花费了我三天多才完成所有这些困难的工作。 试译下列各句： （1）It is time for me to get down to working. 到了我开始认真工作的时候了。 =It is time that I got down to working. （2）这是我第一次来这里。 It/This is the first time that I have been here. 5.How long is it since we visited your mother? 自从看了你母亲后有多长时间了？ 比较下列几个句子： （1）It was a long time that I spent doing the work.(强调句) 我做这项工作是花了很长一段时间。 （2）It was a long time before I finished doing the work.(才) 过了很长一段时间我才完成了这项工作。 （3）It was not long before I finished doing the work . (不久就) 不久我就完成了这项工作。 （4）It is 3 years since I left school.(since句式)。 自从我毕业离校已经三年了。 （5）It will be 3years before I leave school. 要过三年我才能够离校。 6.It is impossible for us to finish so much work in such a short time.
?Never be afraid of grammar ?Collect some examples; ?Watch them very carefully; ?Find out something in common; ?Try to use the rules ---- practise. it用法完全归纳 一、it 作人称代词的用法 1.指事物 作为人称代词，it 可以除人以外的一切事物或动物。如： I dropped my watch and it broke. 我把手表掉在地上摔坏了。 It’s hard work, but I enjoy it. 工作很辛苦，可是我乐意干。 “Where is the dog?”“It’s in the bedroom. ”“狗在哪?”“在卧室里”。 2.指人 it 指人主要用于指不性别不明的婴儿或用于确认某人的身份。如： Is it a boy or a girl? 是男孩还是女孩? There is a knock on the door. It must be the postman. 有人在敲门，一定是邮递员。 【说明】在答语中，常用来指本人，如说It’s me。
3.代替某些代词 代词it 还可用于代替指示代词this, that 以及复合不定代词something, anything, nothing等。如： “What’s this?”“It’s a new machine. ”“这是什么?”“是一种新机器”。 Nothing is wrong, is it? 没出什么问题，是吗? 二、it 作非人称代词的用法 1.基本用法 it 作非人称代词的用法，主要用于指时间、距离、价值、天气、气候及温度等自然现象。如： It’s too late to go there now. 现在去那儿已经太迟了。 It rained all day yesterday. 昨天下了一天的雨。 It can get very hot here. 这里有时会很热。 2.用于某些句型 It’s time for sth. 该做某事了。 It’s time to do sth. 该做某事的时候了。 It’s time for sb to do sth. 某人该干某事了。 It’s (about / high) time + that-从句. 某人该做某事了。(从句谓语用过去式，有时也用“should+动词原形”) It’s first (second) time + that-从句. 某人第几次干某事。(从句谓语用现在完成时)
it用法及句型归纳 it为人称代词，主格与宾格同形。该词用法灵活，下面帮助同学们作以归纳。 一、可用来代替指示代词this或that。例如： —What's this/that? 这/那是什么？ —It's a ruler. 这/那是尺子。 二、表示时间、距离、天气、数字等。例如： 1. —What's the time?几点了？ —It's ten to ten. 九点五十。 2. —What's one plus two? 一加二等于几？ —It's three. 等于三。 三、用来代替前面提到的人或物。例如： This is my pen. Give it to me, please. 这是我的钢笔，请把它给我。 四、指心目中或上下文中所指的人或物。例如： 1. —Who's that over there? 那边的人是谁？ —Is it Bill? 是比尔吗？ 2. Miss Gao has a computer. It's new. 高老师有一台电脑，它是新的。 五、指身份不明、性别不详的人或者指照片中的人。例如： —What's the baby in the picture?照片中的那个婴儿是谁？ —It's me. 是我。 六、在电话用语中，可用it来指代对方或者自己。例如： —Hello! Who's it? 喂，你是哪位？ —It's Jim. 我是吉姆。
在初中英语教材中，出现了许多由it引导的固定句式，现归纳如下： 一、It's time for sb. to do sth. / It's time for sth.意为"是(某人)该干……的时间了"、"到……的时候了"。例如： 1. It's time for supper ／to have supper.该吃晚饭了。 2. It's time for me to study.我该学习了。 二、It takes(sb.)some time to do sth.意为"(某人)花……时间做某事"。例如： 1. It takes twenty minutes to go to school by bike. 骑自行车上学要花二十分钟的时间。 2. It took me a week to finish reading the book. 我花了一周时间读完这本书。 三、It is one's turn to do sth.意为"轮到某人做某事了"。例如： It's your turn to be on duty tomorrow. 明天轮到你值日了。 四、It is ／has been ＋时间段＋since ＋一般过去时，意为"自从……以来已过了……(时间)。" 例如： 1. It is / has been four days since I caught a cold. 我感冒已四天了。 2. It is / has been two weeks since we met last. 自从我们上次见面以来已过了两周。 五、It seems ／seemed ＋that从句，意为"看起来好像……"。例如： It seemed that our team was going to win. 我们队看起来好像要赢了。 六、It's＋表语＋to do sth.。例如： It's a good idea to go out for a walk. 出去散步是个好主意。 七、It's ＋adj.＋that从句。例如： It's true that I may fall behind the other students.我真可能落在别的学生后面。 八、It's＋adj.＋of(for)sb.＋to do sth.。对于这个句型究竟用of还是用for，主要取决于前面的形容词。如果形容词是描述不定式行为者的性格、品质等的，如kind，good，nice，clever 等用of；如果形容词仅仅是描述行为的则用for，这类形容词常见的有difficult，easy，hard，important，dangerous等。例如：
it的用法及强调句型 it的用法 一、it作指示代词【完成句子】用one，ones，it，that，those填空 (1) — I can't find my watch. —You haven't found ______？If you want to buy a new ______，I suggest you buy ______ made in China. (2) We've got a big cup and two small ______. (3) The weight of an elephant is much greater than ______ of a tiger. (4) The books on the first shelf are easier than ______ on the second shelf. (5) The boy told his story and ______ of the girl upstairs. 【答案】(1) it; one; one (2) ones(3) that (4) those / the ones (5) that / the one 【结论1】 ①指代上文提过的事物时，it指的是同名同物，相当于the＋名词； ②one指的是同名异物，表示单数可数名词相当于a ＋名词；a / an＋形容词＋one等于a / an＋形容词＋名词；复数形式用ones； ③that后面常有后置定语，有特指意义，代替不可数名词或单数可数名词，相当于the＋ 名词； ④复数名词用those，相当于the ones。 【例句观察】— Someone is knocking at the door. Who is it? — It must be Leo. He said he'd come to see me. 【结论2】it指代人时，常指小孩或身份不明的人。 【例句观察】It's too quiet in the room. Everyone just keeps silent. 【结论2】it可用以指代环境或情况。 (6)— What time is it now? — It's half past seven. (7)— It is spring now and it's warm these days. 【结论3】it可用以指代时间、季节、天气或距离。 【注意】it指代时间时，有如下一些句型： (1) It is time for sth. (for sb.)to do sth. / that－从句(should do / did, 必须用虚拟语气) 例：① It's time for lunch. ② It's time for us to clean the house. ③ It's time that we should clean the house. ＝It's time that we cleaned the house. (2) It is / has been ＋some time ＋since－从句(从句用一般过去时) It is 10 years since I graduated from college. (3) It / This/That is the first / second time that－从句(必须使用现在完成时)这是某人 第……次做了某事。 It / This/That was the first / second time that－从句(必须使用过去完成时) 例：①It is the second time that she has visited the Great Wall. ②This was the first time that I had come late to school. (4) It was ＋时间点＋when －从句 例：It was evening when we got home. ＝It was evening in which we got home. (5) It was / will be ＋some time ＋before －从句 例：①过了5年他们才从北大毕业。 It was five years before they finally graduated from Beijing University. ②不久，我们就要从我们学校毕业了。 It won't be long before we graduate from our school. 二、it作形式主语 1.代替主语从句 ①It is clear ( obvious，true，possible certain....) that ..... “清楚（显然，真的，肯定．．．）” ②. It is important ( necessary，right，strange，natural...) that ... that 后的从句中要用虚拟语气（should + 动词原形），should 可以省去，建议记住该句型中的形容词。 It is important that we (should) learn English well.
it的用法和强调句(20) 1．It was only when the accident took place _________ （他才意识到）the importance of careful driving．（realize） that he realized 2．I heard that it was ten years later, in 2010, _______________(他们的婚姻破裂).(break) that their marriage broke up 3. It __________________________(直到战争结束) that he returned home. (end) was not until the war ended 4.Actually, it was not until I was appointed to be in charge of the research team_____________ the importance of teamwork. (aware) 实际上，直到我被指定负责这个研究小组的时候我才意识到团队合作的重要性。 that I was aware of考查强调句和短语。题干使用了句型''it was not until.. .that...", 因此本空是强调句的后面部分，应用that, 用be aware of表示"意识到，知道"。 5. Communication becomes more convenient nowadays. Cellphones ______________ (使得这成为可能)for us to talk to anyone from anywhere. (make) make it possible 6．在上学的路上，我突然想起我把英语书忘在家里，所以我不得不回去取。 On my way to school, ___________________________ that I had left my English book at home, so I had to fetch it .(occur) it (suddenly) occurred to me 7 .__________________（坚持在一起）your friends through thick and thin that brings you lifelong friends.（stick） It is sticking with 8．Could you tell me _____________（在哪里）you found the missing boy．（it）where it was that 9. It is your efforts, rather than your intelligence,__________（决定）your success.（determine） that determine 10. I still wonder what it was (令他失望)badly. Shall we go and comfort him?( let ) that let him down 11．Though he was a newcomer, I found it easy_____________ （和他相处）.（get）to get along / on with him 12．I think it important ___________________ (与我们的朋友保持联系). (touch) to keep / stay in touch with our friends 13.Each new way of looking at a situation improves our understanding
强调句、It的用法 1. My bike is missing. I can’t find ____ anywhere. A. one B. ones C. it D. that 2. ---- Who’s that? ---- ____ Professor Li. A. That’s B. It’s C. He’s D. This’s 3. ____ was Jane that I saw in the library this morning. A. It B. He C. She D. That 4. ---- Have you ever seen a whale alive? ---- Y es, I’ve seen ____. A. that B. it C. such D. one 5. The color of my coat is different from ____ of yours. A. this B. that C. it D. one 6. ____ will do you good to do some exercise every morning. A. It B. There C. Those D. Y ou 7. We think ____ our duty to pay taxes to our government. A. that B. this C. its D. it 8. The climate of Shanghai is better than ____ of Nanjing. A. that B. it C. which D. what 9. ____ four years since I joined the Army. A. There was B. There is C. It was D. It is 10. How long ____ to finish the work? A. you’ll take B. you’ll take it C. will it take you D. will take you 11. It was through Xiao Li ____ I got to know Xiao Wang. A. who B. whom C. how D. that 12. It was in the rice fields ____ we had our league meeting. A. where B. that C. in which D. on which 13. It was on October 1st ____ new China was founded. A. which B. when C. as D. that 14. Was it because he was ill ____ he asked for leave? A. and B. that C. that’s D. so 15. Mary speaks in a low voice; ____ is difficult to know what she is saying. A. it B. that C. so D. she 16. It was ____ I met Mr Green in Shanghai. A. many years that B. many years before C. many years ago that D. many years when 17. ____ is not everybody ____ can draw so well. A. It, all B. It, that C. There, who D. There, that 18. So ____ that no fish can live in it. A. shallow is the lake B. the lake is shallow C. shallow the lake is D. is the lake shallow
期末专题练习——It的用法、There be句型 ［教学内容］ 第一部分It 的用法 概说：It是个非常简单的单词,但其用法却很灵活。 一、指代作用。It作句子的主语。 （一）It指前面已经提到过的人或事物。 1. What’s this? —It’s a chair. 2. Who is it? —It’s me. 提示：it代替上文提及的原物(复数用they)； one指代上文提及的、泛指的可数名词单数（复数ones）； that指代上文提及的定指的可数名词单数或不可数名词（复数those）。 （二）It指时间、季节。虚义。 1. What time is it? —It’s nine. 2. It’s time to go to school. Let’s go. 3. What day is today? —It’s Saturday. 4. What is the date today? —It is Oct. 1st. 5. What season is it? —It is summer. （三）It指气候。虚义。 1. It is cold in this room. 这个房间很冷。 2. What’s the weather like today? —It’s fine. 今天天气怎么样？天气很好。 3. It often snows in winter in Harbin. 哈尔滨的冬天经常下雪。 （四）It指距离、情况等。虚义。 1. It is five kilometers from my home to the school. 从我家到学校有五千米。 2. It is very near from this shop to that. 从这个商店到那个商店很近。 3. It is a long way to the sea. 这离海很远。 4. Is it well with you? 你身体好吗？ 二、It作形式主语。 动词不定式、动名词短语、从句在整个句中起主语作用，而这一部分用词较多，因此
It的用法 一、Tell the functions for “it” in each sentence: 1、---What’s the weather together ---It is fine. 2. It is hard to communicate with him. 3. I find it hard to communicate with him. 4. It is Li that who cleaned the classroom. 5. It is a book. 二、It 用法归纳 1，指代it （1）.用作人称代词：指代物、整个句子 （2）用作非人称代词 2，形式it：（1）作形式主语（2）作形式宾语 3，强调it 4，特殊句型 5.在答语中指代this/that： 1).--- Whose book is that ---It’s mine. 三、特别注意： it, one和that作替代词的用法及区别 1. it代替前面提到的同一事物,该事物既可以是可数名词也可以是不可数名词。 (特指，指代单数，指代物，同名同物) Can I borrow your pen—Sorry， I’m using it.
2. one代替前面提到的同类事物中的一个。该事物只能是可数名词,前面可以有冠词,也可以被this、that或形容词修饰,其后也可以有定语。（泛指，指代可数名词，指代人或物，同名异物） I have a bike. Do you have one Eg: (1).I bought a dictionary three years ago and I am still using______ now. (2) I bought a dictionary three years ago but I am going to buy a new _______soon. (3). that代替前面提到的同类事物中特指的一个。该事物既可以是可数名词也可以是不可数名词,必须要有后置定语,但不可以有前置修饰语。（特指，指代单数或不可数，指代物，后面有定语） The coffee produced in Brazil is more famous than __________in Mexico. 四：形式主语、宾语、强调句及其他
英语强调句及it用法大全 强调句、It的用法、省略和插入语 一、强调句 （一）强调句句型 1、陈述句的强调句型：It is/ was + 被强调部分（通常是主语、宾语或状语）+ that/ who （当强调主语且主语指人）+ 其它部分。 e.g. It was yesterday that he met Li Ping. 2、一般疑问句的强调句型：同上，只是把is/ was提到it前面。 e.g. Was it yesterday that he met Li Ping? 3、特殊疑问句的强调句型：被强调部分（通常是疑问代词或疑问副词）+ is/ was + it + that/ who + 其它部分？ e.g. When and where was it that you were born? 4、强调句例句：针对I met Li Ming at the railway station yesterday.句子进行强调。 强调主语：It was I that (who) met Li Ming at the railway station yesterday. 强调宾语：It was Li Ming that I met at the railway station yesterday. 强调地点状语：It was at the railway station that I met Li Ming yesterday. 强调时间状语：It was yesterday that I met Li Ming at the railway station. 5、注意：构成强调句的it本身没有词义；强调句中的连接词一般只用that, who，即使在强调时间状语和地点状语时也如此，that, who不可省略；强调句中的时态只用两种，一般现在时和一般过去时。原句谓语动词是一般过去时、过去完成时和过去进行时，用It was … ，其余的时态用It is … 。 （二）not … until … 句型的强调句 1、句型为：It is/ was not until + 被强调部分+ that + 其它部分
It的用法及典型句型归纳 一、人称代词it的最基本用法是作代词，主要指刚提到的事物，想法，以避免重复;也可以指性别不明或性别被认为是不重要的人或动物；未指明但谈话双方都明白的事情或情况。 ①They watched the train until it disappeared in the distance. ②Is this your dog？No, it isn’t. ③I hate it when people talk with a full mouth.． 二、.非人称代词.it有时并不指具体的东西而泛指天气、时间、日期、距离、价值、度量、温度、环境等： It is a lovely day, isn’t it? // It was nearly midnight when she came back. It is April First today. // It is some 3000 kilometers from A to B. It is three dollars. // Today it is 30 degrees centigrade. 三、作形式主语，替代主语从句，动词不定式，或动名词短语 1.作形式主语替代主语从句 ⑴It is clear ( obvious，true，possible，certain....) that ＂┅清楚的（显然的，真的，可能的,肯定的．．．）＂ ⑵It is important ( necessary，right，strange，natural...) that + (should ) do (虚拟语气) ┅是重要的(必要的,对的,奇怪的,自然的┅) ⑶It is said (reported/ learned/believed/thought/known/told/hoped.....) that = sb / sth is said (reported/ believed /thought…) to do( to be doing/ to have done) sth ＂据说（据报道，据悉．．．）＂。 ⑷It is suggested ( advised/ ordered / demanded/ insisted/ commanded... ) that +(should ) do ＂据建议；有命令．． ⑸It is a pity ( a shame /an honour/a good thing/a fact,/a surprise/... ) that that后的从句一般用虚拟语气（should + 动词原形），should可省去．表示出乎意料，常译为＂竟然＂。没有这种意义时，则不用虚拟语气。 小练一下： It is very clear that he’s round and tall like a tree. = It is important that we (learn) English well. It is necessary that he (remember) these words. It is said that he has come to Beijing. = It is reported that another earth satellite has been put into orbit. = It is suggested that the meeting ( put off). It was ordered that we (arrive) there in two hours. It is a pity that such a thing ( happen) in your class. It is a pity that he (be) ill. 2.作形式主语替代不定式 . ⑴It is kind ( of sb. ) to do sth.= sb be kind to do sth.一般都是表示人的特性的形容词。如： bad /brave /careless/ clever /cruel / foolish / good （好心的）/ honest/ kind / lazy / modest/ naughty/ nice（有教养的）/polite/ rude / silly / stupid / wise ，等。 Eg. It is kind of you to give me a hand. = ⑵It is necessary ( for sb. ) to do sth. .不定式的逻辑主语是由for引起。常见的形容词有： Important/ necessary/ natural/ easy / safe / common / normal / hard / difficult / dangerous/ unusual/ rare / impossible / pleasant Eg. It is important for her to come to the party.
It is……that强调句用法 当需要强调句中的主语、宾语、状语时，我们常用“It is(was)+被强调部分+that(who)”这种句型，使用此句型时，应注意以下几点。 1.一般情况用It is(was)……that…如： He read three books in the library yesterday. 我们分别可以强调主语、宾语、地点状语和时间状语。如： It was he who(that)read three books in the library yesterday. (强调主语) It was three books that he read in the library yesterday.(强调宾语) It was in the library that he read three books yesterday. (强调时间状语) 2.当被强调部分指人时，可用that，也可用who；指物时，只用that,如： It was Tom who(that)I met last week. It is a new bike that his brother wants to buy. 3.强调状语时，只用that,不用when、where.如： It is at 5 o'clock that the train will arrive. 4.被强调的部分是主语时，注意句子的谓语动词和被强调的主语保持一致。如：It is he who is late. It is they that were late. 5.一般疑问句的强调句为:Is (was) it + that…? 特殊疑问句为：特殊疑问词+ is (was) it +that…?结构。如： Was it ten years ago that his father died?（他的父亲是十年前去世的吗？）When is it that you will set off?（你到底什么时候出发？） 6.注意在强调句的疑问句型中，强调标志that/who后只能使用陈述语序。 比较：Was it by plane that did he come back ?(×) Was it by plane that he came back? (√) When was it that the Second World War broke out? (√) When was it that did the Second World War break out ?(×) 7.强调时间状语和地点状语时与定语从句的区别： It was in 1921 that our Party was founded.(强调句式) It was 1921 when our Party was founded.(定语从句) 即：强调时间或地点时有介词置于其前时，则连接词用that。其前面应有介词而被省去时，则用连接词when（时间）或where(地点)。又如： It was on the farm that we practised planting crops. It was the farm where we learned a lot . 1
it用法完全归纳 一、it 作人称代词的用法 1. 指事物 作为人称代词，it 可以除人以外的一切事物或动物。如： I dropped my watch and it broke. 我把手表掉在地上摔坏了。 It’s hard work, but I enjoy it. 工作很辛苦，可是我乐意干。 “Where is the dog?” “It’s in the bedroom. ” “狗在哪?”“在卧室里”。 2. 指人 it 指人主要用于指不性别不明的婴儿或用于确认某人的身份。如： Is it a boy or a girl? 是男孩还是女孩? There is a knock on the door. It must be the postman. 有人在敲门，一定是邮递员。 【说明】在答语中，常用来指本人，如说It’s me。 3. 代替某些代词 代词it 还可用于代替指示代词this, that 以及复合不定代词something, anything, nothing等。如： “What’s this?” “It’s a new machine. ” “这是什么?”“是一种新机器”。 Nothing is wrong, is it? 没出什么问题，是吗? 二、it 作非人称代词的用法 1. 基本用法 it 作非人称代词的用法，主要用于指时间、距离、价值、天气、气候及温度等自然现象。如： It’s too late to go there now. 现在去那儿已经太迟了。 It rained all day yesterday. 昨天下了一天的雨。 It can get very hot here. 这里有时会很热。 2. 用于某些句型 It’s time for sth. 该做某事了。 It’s time to do sth. 该做某事的时候了。 It’s time for sb to do sth. 某人该干某事了。
it的用法 一、it作指示代词 【完成句子】 用one，ones，it，that，those填空 (1) — I can't find my watch. —You haven't found ______？If you want to buy a ne w ______，I suggest you buy ______ made in China. (2) We've got a big cup and two small ______. (3) The weight of an elephant is much greater than ______ of a tiger. (4) The books on the first shelf are easier than ______ on the second shelf. (5) The boy told his story and ______ of the girl upstairs. 【答案】 (1) it; one; one(2) ones(3) that (4) those / the ones (5) that / the one 【结论1】 ①指代上文提过的事物时，it指的是同名同物，相当于the＋名词； ②one指的是同名异物，表示单数可数名词相当于a ＋名词；a / an＋形容词＋one等于 a / an＋形容词＋名词；复数形式用ones； ③that后面常有后置定语，有特指意义，代替不可数名词或单数可数名词，相当于the＋名词； ④复数名词用those，相当于the ones。 【例句观察】 — Someone is knocking at the door. Who is it? — It must be Leo. He said he'd come to see me. 【结论2】it指代人时，常指小孩或身份不明的人。 【例句观察】 It's too quiet in the room. Everyone just keeps silent. 【结论2】it可用以指代环境或情况。 【完成例句】 根据语境补全句子 (6)— What time is it now? — It's half past seven. (7)— It is spring now and it's warm these days. 【结论4】it可用以指代时间、季节、天气或距离。 【注意】it指代时间时，有如下一些句型： (1) It is time for sth. (for sb.)to do sth. / that－从句(should do / did, 必须用虚拟语气) 例：① It's time for lunch. ② It's time for us to clean the house. ③ It's time that we should clean the house. ＝It's time that we cleaned the house. (2) It is / has been ＋some time ＋since－从句(从句用一般过去时) (3) It / This is the first / secon d…time that－从句(必须使用现在完成时) 这是某人第……次做了某事。 It / That was the first / second…time that－从句(必须使用过去完成时)