It用法和强调句型.ppt

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1、It It用法和强调句型用法和强调句型讲与练讲与练授课教师：叶授课教师：叶 军军一、代词一、代词 it.例如：例如：(1).-When shall we meet again？-Make it any day you like；its all the same(NMET96)(2).-Can I help you,Sir？-Yes,I bought this radio here yesterday,but it doesnt work.(NMET96)(3)Its always difficult being in a foreign country,especially if you do

2、nt speak the language.(NMET2000)(4).We didnt plan our art exhibition like that but it worked out very well.(NMET2001)(5).A computer can only do what you have instructed it to do.(NMET2001)总结：代替前文提到过的事物或将会发生的事情。总结：代替前文提到过的事物或将会发生的事情。例如：例如：Someone is ringing the doorbell.Go and see .(NMET2000春，上海春，上海)

3、1.A.who is it B.who it is 2.C.who is he D.which one is it总结：指说话者心目中的人或指做某动作总结：指说话者心目中的人或指做某动作的人或与某物有关的人。可以代替指示的人或与某物有关的人。可以代替指示代词代词this 和和that.(1).-Alice,you feed the bird today,will you?-But I fed it yesterday.(NMET99)(2).Its the wind shaking the window.总结：指代除人以外的一切生物和事物。总结：指代除人以外的一切生物和事物。It 和和one

4、都可以代替前文提到过的事物。其区都可以代替前文提到过的事物。其区别是：别是：it 用来代替特指的人或物用来代替特指的人或物,也就是被代也就是被代替名词的本身，即替名词的本身，即“同名同物同名同物”，它只可代替，它只可代替单数名词；而单数名词；而one 却是前文提到过的那类事物却是前文提到过的那类事物中的任何一个。中的任何一个。高考试题精选高考试题精选(1).The Parkers bought a new house but will need a lot of work before they can move in.(NMET2001)A.they B.it C.one D.which(2

5、).I was disappointed with the film.I had expected to be much better.(NEMT93)A.that B.this C.one D.it(3).I hope there are enough glasses for each guest to have .(NMET95)A.it B.those C.them D.one(4).-Why dont we take a little break?-Didnt we just have?(NMET2000)A.it B.that C.one D.this二、表示时间、距离、天气、季节以

6、及其它自然二、表示时间、距离、天气、季节以及其它自然现象或景观。现象或景观。it 一般用作无人称动词句的主语。一般用作无人称动词句的主语。例如：例如：1时间；主要用于下面的句型中：时间；主要用于下面的句型中：(1).Its time “是该干是该干的时候了的时候了”Its time to do sth.Its time for+n.Its time for sb.to do sth.Its time+that 从句（从句谓语动词用过去时从句（从句谓语动词用过去时形式或形式或 should+动词原形）动词原形）(2).It+be+when 从句从句 “当当的时候的时候”例如：例如：Was it

7、8 oclock you heard someone at the door?A.when;knocking B.when;knock C.that;knocking D.that;knock (3).It is/has been+一段时间一段时间+since 从句从句 “自从自从已有多长时间了已有多长时间了”例如：例如：-What was the Party like?-Wonderful.Its years I enjoyed myself so much.(NMET93)A.after B.when C.before D.since(4).It+be+一段时间一段时间+before 从句

8、从句 “过多过多久才久才”例如：例如：It will be quite a long time she is back again,so dont be too cross with her.(NMET92)A.that B.since C.before D.until(5).Its the first(second,third)time+主语主语+现在完成时，表示现在完成时，表示“这已是第一这已是第一（二、三次（二、三次）做）做”例如：例如：-Do you know our town at all?-No,It(This)is the first time I here.(NMET92)A.

9、was B.have been C.came D.am coming2.距离：距离：How far is it to the railway station from here?3天气：天气：It often rains in summer and snows in winter here.4季节：季节：It was late autumn.5环境或情况：环境或情况：It is dangerous and everybody must leave.Is it well with you?.引导词引导词it.1it 用作形式主语用作形式主语动词不定式（短语）、动名词（短语）或从句在句动词不定式（

10、短语）、动名词（短语）或从句在句中作主语时，常用中作主语时，常用it作形式主语，放在句首，而把作形式主语，放在句首，而把真正的主语放在后面。真正的主语放在后面。例如：例如：(1).It is generally believed that teaching is as much an art as it is a science.(NMET2001)（人们普遍认（人们普遍认为教学不仅是一门科学，而且是一门艺术）为教学不仅是一门科学，而且是一门艺术）(2).Having suffered such heavy pollution already,it may now be too late(fo

11、r people)to clean up the river.(NMET2001)(3).It takes a long time to go there by train;its by road.(NMET93)A.quick B.the quickest C.much quick D.quicker常用的句型有：常用的句型有：a.It is+adj.to do sth.It is+adj./n.(短语短语)+of/for sb.to do sth.b.to do It+v.+that +主主+v.Whetherc.It takes/took sb.some time to do sth.I

12、t costs/cost sb.some money to do sth.adj.d.It is+p.p.+that+主主+v.a/an+n.It seems/happens/appears+that+主主+v.例：例：It is true/is said/is a fact/seems that he is ill.常用的句型有：常用的句型有：a.It is+adj.to do sth.It is+adj./n.(短语短语)+of/for sb.to do sth.b.to do It+v.+that +主主+v.Whetherc.It takes/took sb.some time to

13、do sth.It costs/cost sb.some money to do sth.adj.d.It is+p.p.+that+主主+v.a/an+n.It seems/happens/appears+that+主主+v.例：例：It is true/is said/is a fact/seems that he is ill.e.It is no use/good/need doing sth.例：例：It is no use learning without thinking.f.It+v.+sb.+that 从句结构。从句结构。g.It is/was up to sb.to do

14、sth.该由某人负责该由某人负责/决定做某事。决定做某事。It is ones turn to do sth.该轮到某人做某事了。该轮到某人做某事了。Whose turn is it to do sth?该轮到谁做某事了该轮到谁做某事了？高考试题精选高考试题精选(1).is a fact that English is being accepted as an international language.(NMET95)A.There B.This C.That D.It(2).Does matter if he cant finish the job on time?(NMET91)A.t

15、his B.that C.he D.it(3).It worried her a bit her hair was turning gray.(NMET92)A.while B.that C.if D.for(4).-Shall we go to the bookstore immediately?-.(NMET2000,上海上海)A.It doesnt matter B.Its up to youC.Dont mention it D.Thats all right2.It 用作形式宾语用作形式宾语当宾语是不定式（短语）、动名词（短语）或从句时，当宾语是不定式（短语）、动名词（短语）或从句时

16、，常用常用it作形式宾语，而将真正的宾语后置。常用于下面的作形式宾语，而将真正的宾语后置。常用于下面的句型中：句型中：feel/believe,make sb.+consider,regard,take +it+suppose,find,imagine adj.to do +宾补宾补 +.从句从句 名词（短语）名词（短语）.Doing(注：如果注：如果it后的词是后的词是 no good,no use/useless,no need等，等，后面做真正宾语的用后面做真正宾语的用v-ing 形式，而不用动词不定式。形式，而不用动词不定式。)高考试题精选高考试题精选(1).I dont think

17、possible to master a foreign language without much memory work.(NMET91)A.this B.that C.its D.it(2).You should make it a rule to leave things where you can find them again.(NMET98)(3).I hate when people talk with their mouths full.(NMET99)A.it B.that C.these D.them.it 用于强调句型中用于强调句型中 who 强调句型：强调句型：It

18、is(was)+强调成分强调成分+可用可用 that来强调原句子中的主语、宾语、状语、宾语补足语来强调原句子中的主语、宾语、状语、宾语补足语和间接宾语。强调的成分可以是一个词，一个短语，和间接宾语。强调的成分可以是一个词，一个短语，也可以是一个从句。也可以是一个从句。(1).强调句型的时态要以原句的时态为依据。原强调句型的时态要以原句的时态为依据。原句用现在时，强调句用句用现在时，强调句用is；若原句为过去时，强；若原句为过去时，强调句中则要用调句中则要用was。例如：。例如：I met him in the street yesterday.（原句）（原句）It was him that I

19、 met in the street yesterday.（强调宾语（强调宾语him，原句，原句met为过去时，强调句也为过去时，强调句也用过去时用过去时was。）。）(2).要注意主谓一致性。例如：要注意主谓一致性。例如：Its we who are to answer for it.Its I,not my parents,that am waiting for the bus.(3).强调时间、地点状语时不得用强调时间、地点状语时不得用when和和there取代取代that，也应避免使用，也应避免使用which。(4).被强调的是疑问句，改为强调句后仍用疑问句被强调的是疑问句，改为强调句

20、后仍用疑问句结构。例：结构。例：What do you want me to do?What is it that you want me to do?(5).被强调的如果是被强调的如果是not until;because；only after等状语从句时，习惯上用等状语从句时，习惯上用”It is/was not until that”;“It is(was)because that”,“It was only after that”结构。例如：结构。例如：It was not until 1920 regular radio broadcasts began.(NMET95)A.while

21、 B.which C.that D.since(6).注意强调句型与其它句型的区别：注意强调句型与其它句型的区别：强调句型和定语从句的区别主要从以下两方面考虑：强调句型和定语从句的区别主要从以下两方面考虑：1).强调句式强调句式“It is(was)that/who”可去掉，不影响可去掉，不影响句意，剩下的词能单独组成一个完整的句子，而包含句意，剩下的词能单独组成一个完整的句子，而包含定语从句的句子不能这样做。定语从句的句子不能这样做。如：如：It is tomorrow that they will begin their work.Tomorrow they will begin thei

22、r work.2).It is(was)后，若是名词及名词词组，其后一般是定后，若是名词及名词词组，其后一般是定语从句；若是副词、介词短语，则句子属强调句式。语从句；若是副词、介词短语，则句子属强调句式。例：例：It is in the hall a meeting was held.(that/where)在此句中，若选在此句中，若选that，句子是强调句型；若选，句子是强调句型；若选where，则是定语从句。试比较：则是定语从句。试比较：Was it on the day that you joined the army?（强调句（强调句式）式）Was it the day when yo

23、u joined the army?（定语从句）（定语从句）高考试题精选高考试题精选(1).is known to everybody,the moon travels round the earth once every month.(NMET2001)A.It B.As C.That D.What(2).It is the ability to do the job .matters not where you come from or what you are.(NMET2000)A.one B.that C.what D.it(3).It was for this reason her

24、 uncle moved out of New York and settled down in a small village.(2001春，上海春，上海)A.which B.why C.that D.how(4).It was only when I reread his poems recently I began to appreciate their beauty.(NMET98)A.until B.that C.then D.so(5).It was how the young man had learned five foreign languages attracted the

25、 audiences interest.(NMET2000春，上海春，上海)A.so that B.that C.what D.in which(6).It was not she took off her dark glasses I recognized she was a famous film star.(NMET92)A.when;that B.until;that C.until;when D.when;then(7).It was about 600 years ago the first clock with a face and an hour hand was made.(

26、NMET97)A.that B.until C.before D.when(8).Was that I saw last night at the concert?(NMET95)A.it you B.not you C.you D.that 用法用法种类种类It用法和强调句型用法和强调句型 it1、代替前文提到过的事物或将会发生的事情。、代替前文提到过的事物或将会发生的事情。2、可代替指示代词、可代替指示代词this和和that.3、指说话者心目中的人或指做某动作的人或与、指说话者心目中的人或指做某动作的人或与事物有关的人。事物有关的人。4、指代除人以外的一切生物和事物。、指代除人以外的一切生物和事物。5、可表示时间、日期、天气、温度和距离等。、可表示时间、日期、天气、温度和距离等。1、作形式主语：代替由不定式、动名词和从句、作形式主语：代替由不定式、动名词和从句表示的真主语。表示的真主语。2、作形式宾语：代替由不定式、动名词和从句、作形式宾语：代替由不定式、动名词和从句表示的真宾语。表示的真宾语。3、用在强调句型中：、用在强调句型中：It is/was+被强调部分被强调部分+who/that 总总 结结作作代代词词作作引引导导词词