it地用法和練習(xí)

1、重點(diǎn)代詞 it 的用法和練習(xí)（含答案）（1）it 用做人稱代詞的用法it 用作代詞，意為 “它 ”，既可以指人，也可以指物。it 做人稱代詞，可以 用來(lái)代替一個(gè)名詞、短語(yǔ)、從句或句子，以避免他們 在句中的重復(fù)。這是可以指提到過(guò)的，也可以指未提到的，在句中做主語(yǔ)、表語(yǔ) 和賓語(yǔ)。1）指事物， it 可以知道除人以外的任何事物或動(dòng)物。I dropped my watch and it broke. 我把手表掉在地上摔 壞了。2）指人， it 主用用于指性別不明的嬰兒或只聽其聲 不見其人的人，如：Is it a boy or a girl?是男孩還是女孩？There is a knock on the

2、 door. It must be the postman.“ Listen. Someone is crying.” “ Oh, it must be Mary.3）代替某些代詞。代詞 it 可以用于代替指示代詞 this, that 以及復(fù)合不定代詞 something, anything, nothing 等，如：“ What' s this? ” “It 's a new machine(2) it 用作非人稱代詞的用法1)it 用作非人稱代詞主要用來(lái)指時(shí)間、距離、價(jià)值、 天氣、氣溫及溫度等自然現(xiàn)象。如It ' s too late to go there nO

3、W在去那已經(jīng)太遲了。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該做某事了Its to sdtoh. 是時(shí)候該做某事了It ' s time for sb to do s某人該干某事了。It '(asbout/high) time +that-從句。某人該做某事了從句謂語(yǔ)用過(guò)去式，有時(shí)候用should+動(dòng)詞原形)It ' s first(second)time +tha從句。某人第幾次干某事從句謂語(yǔ)動(dòng)詞用現(xiàn)在完成時(shí))It時(shí)間段+sinee從句。自從,以來(lái)有一段時(shí)間了It 時(shí)間段+b

4、efore從句。過(guò)多長(zhǎng)時(shí)間才,(3) it 用作形式主語(yǔ)的用法。1)當(dāng)不定式、動(dòng)名詞、從句等復(fù)雜成分做句子主語(yǔ) 時(shí)，為保持句子的平衡，通常把真正的主語(yǔ)放在句末，而句首使用形式主語(yǔ)it。如It 's very important to remember this.It 's hard work climbing mountains.It 's unknown when he will come.2)it 用作形式主語(yǔ)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. 他很難下定決 心。It was foolish of her to say such a thing. 她說(shuō)那樣的話， 太愚蠢了。提示：此句型中的介詞 of 和 for 的區(qū)別是： of 用于 指某人的性格，屬性，特征等。介詞 for 表示對(duì)象，意為 “對(duì),來(lái)說(shuō) ”。 It takes/took sb+時(shí)間段+to do sth.某人做某事花了,時(shí)間。It took me two hours to finish my homework. It is up to sb to do sth.該由某人做某事了。It ' s up to you to make the choi

6、ce該由你來(lái)做選擇了。 It looks(seems,appears,happe ns,occurs) that (as if),似乎,It seems as though he didn 't recognize me.(4) it 用作形式賓語(yǔ)的用法。1)當(dāng)不定式、動(dòng)名詞、從句等復(fù)雜成分用作賓語(yǔ)且 后面跟有賓語(yǔ)補(bǔ)足語(yǔ)時(shí)，通常會(huì)在賓語(yǔ)補(bǔ)足語(yǔ)前使用 it 作形式賓語(yǔ)，而將真 正的賓語(yǔ)移至句末。其基本結(jié)構(gòu)為動(dòng)詞+it+賓語(yǔ)補(bǔ)足語(yǔ)+不定式(動(dòng)名詞或從 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)用作形式賓語(yǔ)的幾個(gè)特殊結(jié)構(gòu)： 動(dòng)詞+it+that-從句I think it (that) he will come on time. 動(dòng)詞+it+when(if)-從句We rally appreciate it when she offered to help. 動(dòng)詞+prep.+it+that-從句I can ' t answer for it that he will come我不能保證他 會(huì)來(lái)。 動(dòng)詞+it+介詞短語(yǔ)+that-從句I took it for granted tha

8、t he would help us.(5) it 在強(qiáng)調(diào)句中的用法。強(qiáng) 調(diào) 句 的 基 本 結(jié) 構(gòu) 是 ： It+be+ 被 強(qiáng) 調(diào) 部 分 +that(who)+ 其他部分。It was a computer that he bought last week.練習(xí)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l(wèi)ike為及物動(dòng)詞，后面需要跟賓語(yǔ).而 like 之后不可直接接從句作賓語(yǔ).it可用于某些動(dòng)詞(hate, appreciate 和介詞

9、之后作籠統(tǒng)賓語(yǔ) .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 此處 it 指代前面出現(xiàn)的 a new house. it 指代 上文提到的同一事物 , 為特指 ;而 one 通常指代同類事物中的某一個(gè) .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 此處 it 用作人稱代詞 ,指不明身份 ,性別的人 ; 賓語(yǔ)從句應(yīng)用述語(yǔ) 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 此處 it 用作形式主語(yǔ) .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此處it用以指代前面的句子，可用that替換.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此處it用作形式賓語(yǔ).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此處it泛指自然環(huán)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主語(yǔ)為“ 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、 非限制性定語(yǔ)從句中 , as /which 均可指代整 句話的容 ,但 which只能放在主句后 ,譯為 “這一點(diǎn) ”;as 則位置靈活 ,譯為 “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考查強(qiáng)調(diào)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結(jié)構(gòu)強(qiáng)調(diào)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 考查強(qiáng)調(diào)句型的特殊疑問(wèn)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 考查強(qiáng)調(diào)句型 . 被強(qiáng)調(diào)部分是 not where you come from or what you are (but ) the ability to do the job. 為了平衡結(jié)構(gòu) ,部 分移至句尾1. (據(jù)報(bào)道) a lot of people lost their jobs inthe citylast month.(report)2. (據(jù)報(bào)道) , a lot of people lost their j

17、obsin thecity last month.(report)3. (毫無(wú)疑問(wèn)) he will be admitted to thekey university.(doubt)4. He has made some great movies. 點(diǎn)是毫無(wú) 疑問(wèn)的) .(doubt)5. (沒(méi)必要) for you to get up early tomorrow.(need)6. (碰巧) I had been away when he called.(happen)7. (看來(lái)) nobody knows what has happened.(seem)8. (看起來(lái)似乎) it'

18、;s going to rain.(look)9. (很可能) the thieves don ' t know howmuch it is worth.(likely)10. (我也許可以) 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(為打翻的牛奶而哭泣) .(cry)12. (抱怨是毫無(wú)用處的) , they never listen.(use)13. (難怪) you' vaechieved so muchsuccess.(wonder)14. ( 很明確) most of the farmers have brought in more money by all means.(certain)15. （據(jù)說(shuō)） 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）（比較句型 15）17. （感到遺憾） I haven 't been to the g-ettogether.（pity）18（使之成為一種慣例） that I get up at sixevery day in the morning.（rule）19. I（認(rèn)為有必要） 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. (要花費(fèi)她很長(zhǎng)時(shí)間) to recover from the illness.(take)22. This/It is the third time that I (看那部電影) . (see)23. It was the first time that she(到長(zhǎng)城) .（be）24. It is / has been two years（自從他出國(guó)） .（ go）25. （對(duì)你沒(méi)什么差別） 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（可能要過(guò)段時(shí)間） before the situation improves. （some）28. （沒(méi)關(guān)系） the weather was bad. （matter ）29. （是否要緊） 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