it地用法和练习

1、重点代词 it 的用法和练习（含答案）（1）it 用做人称代词的用法it 用作代词，意为 “它 ”，既可以指人，也可以指物。it 做人称代词，可以 用来代替一个名词、短语、从句或句子，以避免他们 在句中的重复。这是可以指提到过的，也可以指未提到的，在句中做主语、表语 和宾语。1）指事物， it 可以知道除人以外的任何事物或动物。I dropped my watch and it broke. 我把手表掉在地上摔 坏了。2）指人， it 主用用于指性别不明的婴儿或只听其声 不见其人的人，如：Is it a boy or a girl?是男孩还是女孩？There is a knock on the

2、 door. It must be the postman.“ Listen. Someone is crying.” “ Oh, it must be Mary.3）代替某些代词。代词 it 可以用于代替指示代词 this, that 以及复合不定代词 something, anything, nothing 等，如：“ What' s this? ” “It 's a new machine(2) it 用作非人称代词的用法1)it 用作非人称代词主要用来指时间、距离、价值、 天气、气温及温度等自然现象。如It ' s too late to go there nO

3、W在去那已经太迟了。It rained all day yesterda y 昨天下了一整天雨。2)用于某些句型It ' s time for s该做某事了Its to sdtoh. 是时候该做某事了It ' s time for sb to do s某人该干某事了。It '(asbout/high) time +that-从句。某人该做某事了从句谓语用过去式，有时候用should+动词原形)It ' s first(second)time +tha从句。某人第几次干某事从句谓语动词用现在完成时)It时间段+sinee从句。自从,以来有一段时间了It 时间段+b

4、efore从句。过多长时间才,(3) it 用作形式主语的用法。1)当不定式、动名词、从句等复杂成分做句子主语 时，为保持句子的平衡，通常把真正的主语放在句末，而句首使用形式主语it。如It 's very important to remember this.It 's hard work climbing mountains.It 's unknown when he will come.2)it 用作形式主语的重要句型。 It+be+adj.+for(of)sb to do st h. 某人做某事 ,It is hard for him to make up hi

5、s mind. 他很难下定决 心。It was foolish of her to say such a thing. 她说那样的话， 太愚蠢了。提示：此句型中的介词 of 和 for 的区别是： of 用于 指某人的性格，属性，特征等。介词 for 表示对象，意为 “对,来说 ”。 It takes/took sb+时间段+to do sth.某人做某事花了,时间。It took me two hours to finish my homework. It is up to sb to do sth.该由某人做某事了。It ' s up to you to make the choi

6、ce该由你来做选择了。 It looks(seems,appears,happe ns,occurs) that (as if),似乎,It seems as though he didn 't recognize me.(4) it 用作形式宾语的用法。1)当不定式、动名词、从句等复杂成分用作宾语且 后面跟有宾语补足语时，通常会在宾语补足语前使用 it 作形式宾语，而将真 正的宾语移至句末。其基本结构为动词+it+宾语补足语+不定式(动名词或从 句)”I find it difficult to do the job well.I think it best that you sho

7、uld stay here. We think it no use complaining.2)用作形式宾语的几个特殊结构： 动词+it+that-从句I think it (that) he will come on time. 动词+it+when(if)-从句We rally appreciate it when she offered to help. 动词+prep.+it+that-从句I can ' t answer for it that he will come我不能保证他 会来。 动词+it+介词短语+that-从句I took it for granted tha

8、t he would help us.(5) it 在强调句中的用法。强 调 句 的 基 本 结 构 是 ： It+be+ 被 强 调 部 分 +that(who)+ 其他部分。It was a computer that he bought last week.练习部分1. I like in the autumn when the weather is clear and bright. A. this B. that C. it D. one解析C句中like为及物动词，后面需要跟宾语.而 like 之后不可直接接从句作宾语.it可用于某些动词(hate, appreciate 和介词

9、之后作笼统宾语 .2. He was nearly drowned once.When was ?was in 1998 when he was in middle school.A. that; It B. this; This C. this; It D. that; This解析 A. 第一空用 that 指代上文提到的事情 ; 第二空 用 it 指代第一空的 that3. The Parkers bought a new house but will need a lot of work before they can move in.A. they B. it C. one D. w

10、hich解析 B 此处 it 指代前面出现的 a new house. it 指代 上文提到的同一事物 , 为特指 ;而 one 通常指代同类事物中的某一个 .4. Someone is ringing the doorbell. Go and see .A. who is he B. who he is C. who is it D. who it is 解析 D 此处 it 用作人称代词 ,指不明身份 ,性别的人 ; 宾语从句应用述语 序.5. In fact is a hard job for the police to keep order in an important footba

11、ll match.A. this B. that C. there D. It解析 D 此处 it 用作形式主语 .6. Mike ' s mother kept telling him that he should work hard, but did n't help.A. he B. it C. she D. which解析B此处it用以指代前面的句子，可用that替换.7. Since you have repaired my computer, is no need for me to bu y a new one.A. it B. there C. this D.

12、that解析 B 考查固定句型 There is no need for sb to do sth8. The official made clear that he would do everything possible to s olve the problem.A. it B. this C. that D. him解析A此处it用作形式宾语.9. Do you like here?Oh, yes, the air, the weather and the way of life. Everything is so nice.A. this B. there C. that D. it

13、解析D此处it泛指自然环境.10. Bill 'aims is to inform the viewers that cigarette advertising in TV isillegal, ?A. isn 't it B. is it C. isn't he D. is he解析A主语为“ Bill ' s aim ” .11. is mentioned above, the number of the students in senior high school is increasing.A. which B. As C. That D. It解析 B

14、 非限制性定语从句中 , as /which 均可指代整 句话的容 ,但 which只能放在主句后 ,译为 “这一点 ”;as 则位置灵活 ,译为 “正如”.12. It was with great joy he received the news that his lost daught er had been found.A. because B. which C. since D. that解析D考查强调句型.13. It was back home after the experiment.A. not until midnight did he go B. until midnig

15、ht that he didn ' t goC. not until midnight that he went D. until midnight when he didn ' t go解析C考查notun til结构强调句型.14. Why! I have nothing to confess. You want me to say?A. What is it that B. What it is that C. How is it thatD.How it is that解析 A 考查强调句型的特殊疑问句句式 .15. It is the ability to do th

16、e jobmatters not whereyou come fro m or what you are.A. one B. that C. what D. it解析 B 考查强调句型 . 被强调部分是 not where you come from or what you are (but ) the ability to do the job. 为了平衡结构 ,部 分移至句尾1. (据报道) a lot of people lost their jobs inthe citylast month.(report)2. (据报道) , a lot of people lost their j

17、obsin thecity last month.(report)3. (毫无疑问) he will be admitted to thekey university.(doubt)4. He has made some great movies. 点是毫无 疑问的) .(doubt)5. (没必要) for you to get up early tomorrow.(need)6. (碰巧) I had been away when he called.(happen)7. (看来) nobody knows what has happened.(seem)8. (看起来似乎) it'

18、;s going to rain.(look)9. (很可能) the thieves don ' t know howmuch it is worth.(likely)10. (我也许可以) to leave a message forher.(possible)1. It ' s reported that 2. As is reported 3. Theirseno doubt that 4. There is no doubt about it 5. There is no need 6. It happened that 7. It seems that 8. It

19、looks as if 9. It' s10.It ' s possible for me11. It 's no use(为打翻的牛奶而哭泣) .(cry)12. (抱怨是毫无用处的) , they never listen.(use)13. (难怪) you' vaechieved so muchsuccess.(wonder)14. ( 很明确) most of the farmers have brought in more money by all means.(certain)15. （据说） the professor has already su

20、cceeded in carrying out this experiment.（say）16. The professor is said 已成功） in carrying out thisexperiment.（succeed）（比较句型 15）17. （感到遗憾） I haven 't been to the g-ettogether.（pity）18（使之成为一种惯例） that I get up at sixevery day in the morning.（rule）19. I（认为有必要） to take plenty of hotwater every day.（thi

21、nk）20. It 's high time that we（采取措施） tostop pollution.(take)11. crying over spilt milk 12. It ' s/Theirseno use complaining13. It 's no wonder that14. It 's certain that 15. It 's said that 16. to ha succeeded 17.I feel it a pity that18. I have made it a rule 19. think it (is) ne

22、cessary20. to ok/should take measures21. (要花费她很长时间) to recover from the illness.(take)22. This/It is the third time that I (看那部电影) . (see)23. It was the first time that she(到长城) .（be）24. It is / has been two years（自从他出国） .（ go）25. （对你没什么差别） whether I like it or not，because you never listen to me.（ m

23、ake）26. （用不了多久） before we know the result of the experiment. （ be）27. Measures have been taken to solve the problem ， but（可能要过段时间） before the situation improves. （some）28. （没关系） the weather was bad. （matter ）29. （是否要紧） whether we go together or separately?（ matter ）30. （我突然想起） that he might haveforg

24、otten ourdate.（occur）21. It will take her a long time 22. have seen the film23. had been to the Great wall24. since he went abroad 25. It makes no difference to you26. It won ' t be longt matter tha27. it may be some time 28. It didn'29.Does it matter30. It occurred to me31. （可能性不大） he will change his mind. （chance）32