It的用法總結(jié)+練習(xí)題

1、It的用法總結(jié)在英語(yǔ)中,it有許多不同的用法,它既可以用作代詞(如人稱代詞、非人稱代詞)，也可以用作引導(dǎo)詞（作形式主語(yǔ)或形式賓語(yǔ)），還可以用來(lái)構(gòu)成強(qiáng)調(diào)句型。it用作代詞(1) 用作人稱代詞 在句子中作主語(yǔ)或賓語(yǔ)；指前面已經(jīng)提到過(guò)的事物、動(dòng)物或人，且it指特定的事物；如果指前文中提到的事物中的任何一個(gè)，用one。one可以與any, each, every, not等連用，但one不可代替不可數(shù)名詞。Wheres your car? Its in the garage. 你的汽車(chē)在哪兒呢？在車(chē)庫(kù)里。(指代物品your car)Did you hit it? 你打中了嗎？ (指代事件)The ba

2、by cried when it was hungry.這嬰兒餓時(shí)就哭。（指代嬰兒，尤指性別不詳或無(wú)所謂時(shí)）Who is that?Its me. 是誰(shuí)？我。(指一定情景中所確定的人或事物，此時(shí)相當(dāng)于指示代詞，代指this和that,有時(shí)也指人)Whats this? Its a box. 這是什么？一只箱子。(2) 作非人稱代詞 表示天氣、日期、時(shí)間、溫度、距離、價(jià)值、路程、度量、自然現(xiàn)象與環(huán)境等。也可模糊地指一般情形或上文的部分或整個(gè)意思。譯成漢語(yǔ)時(shí)，it通常不一定譯出來(lái)。Its a long time since they left. 他們走后很久了。Its two miles to t

3、he beach.離海濱有兩英里遠(yuǎn)。Thats just itI cant work when youre making so much noise.原因就在這里你弄出這么大的聲音，我工作不了。另外，需要注意兩點(diǎn)：（1）“Its time”后面可以接不定式和介詞短語(yǔ)表示“是做的時(shí)候了”。如：Its time for supper. Its time to have supper.(2) “Its time”后面還可以接一個(gè)從句，但是從句中的謂語(yǔ)動(dòng)詞一定要用過(guò)去式即虛擬語(yǔ)氣，如： Its time we had lunch.是我們吃飯的時(shí)候了。 Its time we started.是我們?cè)摮?/p>

4、發(fā)的時(shí)候了。it用作引導(dǎo)詞(1) 作形式主語(yǔ) 由動(dòng)詞不定式、動(dòng)詞-ing短語(yǔ)或名詞性從句擔(dān)任主語(yǔ)的句子，常用it來(lái)作形式主語(yǔ)，而把真正的主語(yǔ)放在句子的后面。Its not easy for us to learn English well. 句型為: It +be+形容詞+（for sb.）to do sth.Its foolish of you to say that to her. 句型為: It +be+形容詞+（of sb.）+to do sth.Its no use/good/helpsleeping too much. (句型為: It +be+名詞+doing) Its impo

5、rtant that we be there on time.（句型為: It +be +形容詞+that從句）Its high time that Tom went to school. (句型為: It +be +time +that從句，從句中的動(dòng)詞用過(guò)去時(shí))It was the second time that he had telephoned me that day. 句型為: It +be+ the first(second, third)time +that從句（that從句中動(dòng)詞用完成時(shí)）It was arranged that they should leave the f

6、ollowing winter. (句型為: It +be+過(guò)去分詞+that從句)It appears that the two leaders are holding secret talks. (句型為: It +不及物動(dòng)詞+that從句) (2) 作形式賓語(yǔ) 當(dāng)賓語(yǔ)是動(dòng)詞不定式、動(dòng)詞-ing短語(yǔ)或名詞性從句時(shí)，而賓語(yǔ)后又有賓語(yǔ)補(bǔ)足語(yǔ)，則需用it作形式賓語(yǔ)，將真正的賓語(yǔ)放到賓語(yǔ)補(bǔ)足語(yǔ)的后面。用于這種結(jié)構(gòu)的動(dòng)詞有：feel, find, think, make, consider, take等。Marx found it important to study the situation i

7、n Russia.馬克思發(fā)現(xiàn)研究俄國(guó)的形勢(shì)很重要。 I find it strange that she doesnt want to travel.她竟不想旅游,我覺(jué)得很奇怪。I ll make it clear to you that failure is the mother of success.我要告訴你們失敗是成功之母。it用在強(qiáng)調(diào)句型中英語(yǔ)中，為了突出句子中的某一成分，達(dá)到強(qiáng)調(diào)或使人特別注意該成分的目的，人們常用“It is/was+強(qiáng)調(diào)對(duì)象+who/whom/that.”句式把整個(gè)句子分割成前后兩個(gè)部分，使之各自有自己的謂語(yǔ)動(dòng)詞，中間由that或who/whom連起來(lái)成為一個(gè)新

8、句子。除強(qiáng)調(diào)人時(shí)用who, whom外，其余情況都用連詞that。被強(qiáng)調(diào)的對(duì)象僅限于句子的主語(yǔ)、賓語(yǔ)、賓語(yǔ)補(bǔ)足語(yǔ)和部分狀語(yǔ)（包括狀語(yǔ)從句），即除謂語(yǔ)和定語(yǔ)以外的句子成分。這部分狀語(yǔ)主要包括地點(diǎn)狀語(yǔ)、由before, when, after, not until等引起的時(shí)間狀語(yǔ)從句、由because, because of引起的原因狀語(yǔ)、由by引起的方式狀語(yǔ)等。當(dāng)被強(qiáng)調(diào)的對(duì)象是人時(shí)，可用who, whom或that，其余情況一律用that; 當(dāng)被強(qiáng)調(diào)對(duì)象在從句中做主語(yǔ)時(shí)用who/that,當(dāng)被強(qiáng)調(diào)對(duì)象在從句中做賓語(yǔ)時(shí)用whom/that。原句：My father did the experime

9、nt in the lab yesterday evening.昨天晚上我父親在實(shí)驗(yàn)室做實(shí)驗(yàn)。It was my father did the experiment in the lab yesterday evening.昨天晚上是我父親在實(shí)驗(yàn)室做實(shí)驗(yàn)。（強(qiáng)調(diào)主語(yǔ)）It was the experiment that my father did in the lab yesterday evening.昨天晚上我父親在實(shí)驗(yàn)室里做的是實(shí)驗(yàn)。（強(qiáng)調(diào)賓語(yǔ)）It was yesterday evening that my father did the experiment in the lab.我父

10、親是昨天晚上在實(shí)驗(yàn)室做實(shí)驗(yàn)的。（強(qiáng)調(diào)時(shí)間狀語(yǔ)）It was in the lab that my father did the experiment yesterday evening.我父親昨天晚上是在實(shí)驗(yàn)室里做這個(gè)實(shí)驗(yàn)的。（強(qiáng)調(diào)地點(diǎn)狀語(yǔ)）另外，再注意兩點(diǎn)：（1）強(qiáng)調(diào)句如果還原成陳述句的話，句子成分是完整的，如果不完整，那必然是別的從句而不是強(qiáng)調(diào)句。It was the town where we lived for three years.此句是定語(yǔ)從句，因?yàn)檫€原以后的句子為:We lived the town for three years.缺少介詞（in the town）, 而It

11、was in the town that we lived for three years.這就是一個(gè)強(qiáng)調(diào)句了。（2）強(qiáng)調(diào)中心也可以是疑問(wèn)詞，這時(shí)要將疑問(wèn)詞置于句首，構(gòu)成一個(gè)特殊疑問(wèn)句。Why is it that you want to leave so soon? 你到底為何這么早就要走？It用法練習(xí)題（1）1 It was at the gate _ he told me the news.A that B what C which D when2 Is _ necessary to tell his father everything?A it B that C what D he3

12、Was it in this palace _ the last emperor died?A that B in which C in where D which4 Is _ possible to fly to the moon in a spaceship?A now B man C that D it5 Was it during the Second World War _ he died?A that B while C in which D then6 Is _ necessary to complete the design before National Day?A this

13、 B that C it D he7 I dont think _ possible to master a foreign language without much memory work.A this B that C its D it8 Does _ matter if he cant finish the job on time?A this B that C he D it9 It was not _ she took off her dark glasses _ I realized she was a famous film star.A when, that B until,

14、 that C until, when D when, then10 Toms mother kept telling him that he should work harder, but _ didnt help.A he B which C she D it11 _ is a fact that English is being accepted as an international language.A There B This C That D It答案：1-5 AAADA 6-10 CDDBD 11 D It用法練習(xí)題（2）一、填空題1. I like in the autumn

15、 when the weather is clear and bright. A. this B. that C. it D. one2. 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; This3. The Parkers bought a new house but will need a lot of work before they can move in.A. they B. it

16、 C. one D. which4. Someone is ringing the doorbell. Go and see .A. who is he B. who he is C. who is it D. who it is5. 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 6. Mikes mother kept telling him that he should work hard, but didnt

17、help.A. he B. it C. she D. which7. Since you have repaired my computer, is no need for me to buy a new one.A. it B. there C. this D. that8. The official made clear that he would do everything possible to solve the problem.A. it B. this C. that D. him9. Do you like here? Oh, yes, the air, the weather

18、 and the way of life. Everything is so nice.A. this B. there C. that D. it10. Bills aim is to inform the viewers that cigarette advertising in TV is illegal, ?A. isnt it B. is it C. isnt he D. is he .11. is mentioned above, the number of the students in senior high school is increasing.A. which B. A

19、s C. That D. It12. It was with great joy he received the news that his lost daughter had been found.A. because B. which C. since D. that13. It was back home after the experiment.A. not until midnight did he go B. until midnight that he didnt go C. not until midnight that he went D. until midnight wh

20、en he didnt go14. 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 that D. How it is that15. It is the ability to do the job matters not where you come from or what you are.A. one B. that C. what D. it二、填空題1. （據(jù)報(bào)道）a lot of people lost their jobs i

21、n the city last month.(report)2. （據(jù)報(bào)道）, a lot of people lost their jobs in the city last month.(report)3. （毫無(wú)疑問(wèn)）he will be admitted to the key university.(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)6. （碰巧）I had been away when he called.(

22、happen)7. （看來(lái)）nobody knows what has happened.(seem)8. （看起來(lái)似乎）its going to rain.(look)9. （很可能）the thieves dont know how much it is worth.(likely)10. （我也許可以）to leave a message for her.(possible)11. Its 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）youve achieved so much succes

23、s.(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 succeeded in carrying out this experiment.(say)16. The professor is said （已成功）in carrying out this experiment.(succeed)（比較句型15）17. （感到遺憾）I havent been to the get-together.(pity)1

24、8 （使之成為一種慣例）that I get up at six every day in the morning.(rule)19. I （認(rèn)為有必要）to take plenty of hot water every day.(think)20. Its high time that we （采取措施）to stop pollution.(take)21. （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 tim

25、e 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.（make）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.

26、 （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）31. （可能性不大）he will change his mind.（chance）32. （很可能）we will go to Beijing.（chance）33. （似乎有）hundreds of people in the field；it was quite full.（seem）34. （曾經(jīng)有

27、）a church at the corner of the street.（be）35. She （闡明清楚）she had nothing to do with the decision.（make）36. I （確定）everything is ready.（see）37. What a pity my new computer doesnt work. （一定有什么問(wèn)題）with it.（wrong）38. （結(jié)果）she was a friend of my sister.（turn）39. Come and see me when （你方便的時(shí)候）.（convenient）40.

28、（沒(méi)多大意義）complaining . It doesnt make difference.（point）練習(xí)題（2）答案：一.選擇題1.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)和介詞之后作籠統(tǒng)賓語(yǔ).2.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(lèi)事物中的某一個(gè).4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)用陳述語(yǔ)序.5解析

29、D此處it用作形式主語(yǔ).6解析 B此處it用以指代前面的句子,可用that替換.7解析 B考查固定句型 There is no need for sb to do sth8解析 A此處 it用作形式賓語(yǔ).9解析 D此處 it泛指自然環(huán)境.10解析A主語(yǔ)為 “ Bills aim”11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則位置靈活,譯為 “正如”.12解析 D考查強(qiáng)調(diào)句型.13解析 C考查not until結(jié)構(gòu)強(qiáng)調(diào)句型.14解析 A考查強(qiáng)調(diào)句型的特殊疑問(wèn)句句式.15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),部分移至句尾二、填空題1. Its reported that 2. As is reported 3. There is no doubt