it的用法和練習(xí)

1、重點(diǎn)代詞 it 的用法和練習(xí) ( 含答案 )(1) it 用做人稱(chēng)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(chēng)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?cè)诰渲械闹貜?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(tīng)其聲不見(jiàn)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.aListen. 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(chēng)代詞的用法1) it 用作非人稱(chēng)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 l

3、ate to go there now現(xiàn)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 sth.該做某事了。It' s to do sth.是時(shí)候該做某事了。It' s time for sb to do sth,某人該干某事了。It' s (about/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 +that-從句。某人第幾次干某事。(從句謂語(yǔ)

4、動(dòng)詞用現(xiàn)在完成時(shí))It' s +時(shí)間段+sinee從句。自從以來(lái)有一段時(shí)間了。It' s +時(shí)間段+before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。lt+be+adj.+f

5、or(of)sb to do sth.某人做某事It is hard for him to make up his mi nd.他彳艮難下定決， C?。It was foolish of her to say such a thi ng 她說(shuō)那樣的話，太愚蠢了。for 表示提示：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。介詞對(duì)象，意為“對(duì)來(lái)說(shuō)” 0It takes/took sb+時(shí)寸間段+to do sth某人做某事花了時(shí)間。It took me two hours to finish my homework.It is叩to sb to do st

6、h該由某人做某事了。It' s up to you to make the choice該由你來(lái)做選擇了 。It looks(seems,appears,happe ns,occurs) that (as 彳以乎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

7、do the job well.I think it best that you should 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

8、+介詞短語(yǔ)+that-從句I took it for granted that 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：lt+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. thatC. 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(

9、hate, appreciate.和介詞之后作籠統(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 in.will need a lot of work before they can move解析B此處it指代前面出現(xiàn)的a

10、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(lèi)事物中的某一個(gè)4. Some one 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(chēng)代詞，指不明身份，性別的人；賓語(yǔ)從句應(yīng)用陳述語(yǔ)序.5. In fact is a hard job for the police to keep order in an important football match.A. this B. that C. there D. It解析

11、D此處it用作形式主語(yǔ).6. Mike's mother kept telli ng 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 buy a new one.A. it B. there C. this D. that解析B 考查固定句型 There is no need for sb to do sth

12、8. The official made clear that he would do everything possible to solve 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解析D此處it泛指自然環(huán)境.10. BilFs aim is to inform the viewe

13、rs that cigarette advertising in TV is illegal, ?A. is n't it B. is it C. is n't he D. is he解析A主語(yǔ)為“ Biirs aim ”.11. is men ti oned above, the nu mber of the stude nts in senior high school is in creas ing.A. which B. As C. That D. It解析B非限制性定語(yǔ)從句中，as /which均可指代整句話的內(nèi)容，但 which只能放在主句后， 譯為“這一點(diǎn)”；as

14、則位置靈活，譯為“正如”.12. It was with great joy he received the news that his lost daughter 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 un til midni ght did he goB. un til midni ght that he did n't goC. notun til midni ght that he wentD. u

15、n til midni ght whe n he did n't go 解析 C 考查 not until結(jié)構(gòu)強(qiáng)調(diào)句型.14. Why! I have nothing to con fess. You want me to say?A. What is it that B. What it is that C. How is it that D. 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 the job matters not where you come from or what you are.解析 B 考

16、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 abi lity to do the job.為了平衡結(jié)構(gòu)，部分移至句尾1. （據(jù)才艮道 ）a lot of people lost their jobs in the city last month.（report）2.3.（ 據(jù)報(bào)道）, a lot of people lost their jobs in the city last month.（repor t） （ 毫無(wú)疑問(wèn) ）he will be admitted to the key universit

17、y.（doubt）4. He has made some great movies.（ 這一點(diǎn)是毫無(wú)疑問(wèn)的 ） .（doubt）5.（ 沒(méi)必要） for you to get up early tomorrow.（need）.10.（碰巧） I had been away when he called.（happen）（看來(lái)）nobody knows what has happened.（seem）（ 看起來(lái)似乎 ）it's going to rain.（look）（很可能 ）the thieves don't know how much it is worth.

18、（likely） （我也許可以 ）to leave a message for her.（possible）I. It's reported that 2. As is reported 3. There is no doubt that 4. There is no doubt about it 5. There is no need6. It happened that 7. It seems that 8. It looks as if9. Ifs likely that lO.Ifs possible for me11. Ifs no use （ 為打翻的牛奶而哭泣 ） .（c

19、ry）12.13.14.ans. （certain）15.ment.（say）（抱怨是毫無(wú)用處的 ） ， they never listen.（use）（難，屋 ）you've achieved so much success.（wonder）（ 彳艮明確 ）most of the farmers have brought in more money by all me（ 據(jù)說(shuō) ）the professor has already succeeded in carrying out this experi16. The professor is said已成功）in carrying

20、out this experiment.（succeed）（比較句型 15）17.（感到遺憾 ）I haven91 been to the get-together.（pity）18 （使之成為一種慣例 ）that I get up at six every day in the morning.（rul e）19. I （ 認(rèn)為有必要 ）to take plenty of hot water every day.（think）20. It's high time that we （ 采取措施 ）to stop pollution.（take）II. crying over spilt

21、 milk 12. It's/There is no use complaining 13. It's no wonder that14. It's certain that 15. It's said that 16. to have succeeded 17. I feel it a pity tha tre I have made it athink it （is）took/should takes2ru1l.e（要花費(fèi)她很長(zhǎng)時(shí)間） ntoecreescsoavreyr from the illness.（take）22. This/It is the t

22、hird time that I （看那部電影） . （see）23.It was the first time that she (至U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 n ever liste n t o me(make)26.(用不了多久) before we know the result of the experiment, (be)27.Measures have bee n take n to solve the

23、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 have forgotten our date, (occur)21. It will take her a long time 22. have seen the film 23. had been to the Great wall24. since he went abroad 25. It makes no differe nee to you26. It won't be long27. it may be some time 28. It did n't matter that29. Does it matter30. It occurred to me31. (可能性不大) he will change his mind, (chanc®32. (彳艮可能)we will go to Beiji ng,