it做形式主語用法大全含練習(xí)及答案精編版

1、最新資料推薦It 作形式主語常見句型動詞不定式，動名詞或主語從句作主語時，通常把它們放在謂語動詞前，而用 it 作形式主 語，放到句首，常見句型有：1. It + be + 形容詞+主語從句，如：It is uncertain whether he can come to Jenny s birthday party or not.2. It + be + 名詞詞組 + 主語從句，這類名詞有： a fact, a pity, a shame, an honour， a question 等，如：It s a pity that you missed the exciting football

2、match.It remains a question whether he will come or not.3. It + be + 過去分詞 + 主語從句，這類過去分詞有： announced, believed, expected, hoped, decided, reported, said, shown 等， 如：It is reported that 16 people were killed in the earthquake.It is not decided who will give the operation to the patient.4. It + 不及物動詞(s

3、eem, appear, happen等)+主語從句,這類不及物動詞有：appear, happen,seem 等， 如：It seemed that he didn t tell the truth.It happened that I was out when he called.5. It + be + 形容詞 + for sb. ) + 動詞不定式這類句型常用形容詞 easy, difficult, hard, important, possible ， wise 等作表語，有時候為了強調(diào)不定式動作的執(zhí)行者，常在不定式前加for sb ，如：It s necessary for the

4、 young to master two foreign language.It is unwise to give the children whatever they want.這類形容詞有： easy, difficult, hard, important, possible ， wise6. It + be + 形容詞 + of sb. + 動詞不定式，這類形容詞常是表示心理品質(zhì),性格特征的形容詞， 如： kind, nice stupid, clever, foolish, polite, impolite, silly, selfish, considerate 等。 某人和這些形

5、容詞可以構(gòu)成主系表結(jié)構(gòu)。如：It s very kind of you to help me with the work.=You are kind to help me.It seemed selfish of him not to share his dictionary with others.=He seemed selfish not to share his dictionary with others.7. It + be +名詞詞組 + 動詞不定式，如：It is not a good habit to stay up too late.8. It + be + 名詞或形容詞+

6、 動名詞，這類名詞和形容詞常常是： good, no good, no use, awaste of, useless, senseless, 如：It s a waste of time talking to her any more.It is no use arguing about the matter with him.9. It + take ( sb. )+ 時間(金錢) + 動詞不定式，如：It took the workers almost three years to finish building the dam.It will take a whole day to g

7、et to the top of the mountain on foot.實戰(zhàn)演練：1. It is generally considered unwise to give a childhe or she wants. (NMET 1997)A. howeverB. whatever C. whichever D. whenever2. In factis a hard job for the police to keep order in an important football match. (2001上海 )A. thisB. thatC. thereD. it3. is a fa

8、ct that English is being accepted as an international language. (NMET1995)A. ThereB. ThisC. ThatD. It4. Isnecessary to take off our shoes when we enter the lab? (MET88)A. everyoneB. thisC. herD. it5. will take you a lot of time to find him in the crowd.A. ItB. IC. WeD. They6. It is no use his there,

9、 the situation is hopeless now.A. to go B. to be going C. going D. having gone7. It is never too late to learn, ?A. is it B. isn t it C. does itD. doesn t it8. is known to all that Shenzhou VI Launched Successfully.A. As B. What C. ItD. That9. is reported in the newspaper, the Earthquake in east Chi

10、na's Jiangxi Province killed 13peopleA. ItB. AsC. ThatD. What10. certain that his invention will make people s life convenient.A. That sB. This is C. ItsD. Whats11. that there is another football match on the air this evening.A. It says B. It was said C. It is said D. What was said12. that their

11、 daughter got an opportunity to study abroad.A. It s a exciting newsB. This is an exciting newsC. This is exiting newsD. It s exciting news1 5 BDDDA610CACAC 11 12CD it 作形式主語：it 作形式主語時沒有具體的意義， 而只是幫助把真正的主語移到句子后部去， 使句子顯 得平穩(wěn)一些。 it 作形式主語時，可以代替三種形式：不定式、動名詞和主語從句。1. it代替不定式短語常用于下列句型中： It + be + 形容詞 + （for/o

12、f sb.） to do sth.It + be + 名詞 + to do sth.It takes sb. some time to do sth. 干花了某人 時間It ' s up to sb. to do stlhF是某人的職責或義務(wù) It is everyone ' s duty to obey the law.遵守法律是每個人的義務(wù)。 （ it 作形式主語 , 代替不定式短語 to obey the law ） It is difficult for a foreigner to learn Chinese.對于一個外國人來說，學(xué)習(xí)漢語是困難的。（ it 作形式主語

13、, 代替不定式短語to learn Chinese ） It is not right to use these places as rubbish dumps.2最新資料推薦把這些地方用來倒垃圾是不對的。（ it 作形式主語 , 代替不定式短語 to use these places as rubbish dumps） It took them a year to build the bridge.建這座橋花了他們一年的時間。 （ it 作形式主語, 代替不定式短語to build the bridge ） It be + 形容詞 + for sb. to do sth.與 It be +

14、形容詞 +of sb. to do sth.：如果句型中的形容詞描述的是sb.的品質(zhì)、品格，在邏輯上可以作sb.的表語，則sb.前應(yīng)用介詞of ，否則就用for 。 It ' s necessary for us to use a showtve radio to pick up the programmes.我們用一臺短波收音機收聽這些節(jié)目是必要的。 It ' s kind of you to help me.感謝你對我的幫助。 （ = You are kind to help me. ） It was foolish of him to give up the job.他放

15、棄那工作是愚蠢的。 （= He was foolish to give up the job2. it代替動名詞短語：動名詞作主語用后置形式的情況遠不及不定式那么普遍， 常限于 no good, no use, useless, waste等詞的后面。 It is no good/ use having a car if you candrive. ' t如果你不會開車，有車也沒用。 （ it 作形式主語,代替動名詞短語 having a car） It is a waste of time watching TV.看電視是浪費時間。 （ it 作形式主語,代替動名詞短語 watchi

16、ng TV ） It is no use asking him.問他沒有用。 （ it 作形式主語,代替動名詞短語asking him）3. it代替主語從句：這個主語從句可以用連詞that 引導(dǎo)，也可以用連接代詞或連接副詞引導(dǎo)。 It was clear that they had no desire for peace.很清楚他們沒有和平的誠意。（ it 作形式主語,代替主語從句 that they had no desire for peace） It is doubtful whether she will be able to come.她能否來還很難說。 （ it 作形式主語,代替

17、主語從句 whether she will be able to come ） It was clear enough what she meant.她的意思是夠清楚的。 （ it 作形式主語,代替主語從句what she meant）用 it 作形式主語，把真正的主語從句移至后面的常見句型有： It is a pity/ a shame/ a fact/ an honour/ good news/ no wonder/ a wonder that It was a pity that the engineer couldn ' t come.可惜工程師沒能夠來。 It is a wo

18、nder that he continues to gamble when he always loses!令人驚訝的是他一直輸還一直賭。 It is + 形容詞（如： strange/ natural/ surprising/ obvious/ true/ fortunate/ wonderful/ funny/ possible/ impossible/ likely/ unlikely/ clear/ unusual/ certain/ important ） that It is certain that he will win.他一定會取勝。 It seems/ happened/

19、turned out/ suddenly struck me/ occurred to methat It happened that I wasn ' t there that da恰好那天我不在那里。 It + be + 過去分詞 （如： said/ reported/ announced/ decided/ expected/ hoped/ known/ believed ） that It is said that nothing has been done about it.據(jù)說至今對此沒采取任何措施。 It is reported that more than twenty

20、 people were killed in that bus accident.據(jù)報道在那次的公共汽車事故中有二十多人喪生。* 注意要在 It is suggested/required/desired/ordered/proposed的密旗從句中用虛擬語氣： （should） + 動詞原形 It is requested that he give a performance at the party.有人請求他在聚會上表演一個節(jié)目。 It is suggested that we should get everything ready by tonight.建議一切在今晚準備好。 It d

21、oesn ' t matteil+妾代詞或副詞 It doesn ' t make too much difference+ 連接代詞或副詞 It doesn ' t matter whether he comes or not.他來還是不來都沒關(guān)系。 It won ' t make much difference whether you go today or tomorrow.你今天去也好，明天去也好，關(guān)系不大。 it 作形式賓語：it 作形式賓語時，可以代替三種形式：不定式、動名詞和賓語從句。it作形式賓語時，需具備兩個條件：真正的賓語是不定式、動名詞或從

22、句有賓語補足語 具備了這兩個條件，形式賓語 it 一定要用。1. it代替不定式短語think/ find/ feel/ consider/ make/ regard形容詞 + 名詞 + 不定式短語 I find it pleasant to work with him.（it 作形式賓語，代替不定式短語 to work with him） 我覺得和他一起工作很愉快。 They felt it difficult to finish the work in such a short time.（ it 作形式賓語，代替不定式短語 to finish the work in such a sho

23、rt time ）他們認為在這么短的時間內(nèi)完成這項工作是困難的。 All these noises made it impossible for me to go on with the work.（ it 作形式賓語， 代替不定式短語to go on with the work ） 這些噪音使我無法繼續(xù)工作。2. it代替動名詞短語（這只限于少數(shù)句型，在多數(shù)情況下用不定式時更多一些） The professor considers it no good reading without understanding.這位教授認為閱讀而不理解沒有益處。 He found it useless（ n

24、o use） arguing with him.他發(fā)現(xiàn)和他辯論沒有用。 He thought it absolutely senseless attempting the impossible.想做不可能的事情，他認為是完全沒道理的。3. it代替賓語從句： We all thought it a pity that the conference should have been cancelled.會議取消了我們都感到很遺憾。 I took it for granted that they were not coming. 我想他們準是不會來的了。 I ' ll see to it

25、that everything is ready in time我負責使一切都按時準備好。 含 it 的常用句型英語中有一些固定句型中含有it, 應(yīng)注意這些句型的使用。1. It be +被強調(diào)部分 + that/ who +其他成分I met Peter in Japan last year. It was I who/that met Peter in Japan last year. It was Peter whom/that I met in Japan last year. It was in Japan that I met Peter last year. It was las

26、t year that I met Peter in Japan.* notuntil也可用于強調(diào)句型例 1 Mr Brown didn ' t come back until eleven o ' clock.可變?yōu)椋?It was not until eleven o clockMthraBt rown came back.* 強調(diào)句也可變?yōu)樘厥庖蓡柧淅?1 It was in 1949 that the PRC was founded.可變?yōu)椋?When was it that the PRC was founded?2. It ' s+點狀語+ that（強調(diào)句

27、） It '她點名詞+ where（定語從句） It is the town where I was born.（the town 為地點名詞，定語從句 ）這是我出生的鎮(zhèn)子。 It was in the town that I was born.（in the town 為地點狀語，強調(diào)句型）我出生在這個鎮(zhèn)子。3. It ' s時間名詞+ when（時間狀語從句） It ' s + 寸間語 +that強調(diào)句）It was at 8 o ' clock that he returnedat 8 o ' clock寸間狀語， 強調(diào)句） 他是在八點鐘 回來的。

28、It was 8 o ' clock when he returned.（8 o是coc名詞，時間狀語從句）他回來的時候是八點鐘。4. if it is convenient to you 如果你方便的話If it is convenient to you, you can start tomorrow.如果方便的話，你明天可以動身。5. believe it or not 信不信由你 Believe it or not, I ll go abroad next month.不管你信還是不信，我下個月要出國。6. It ' s time that did/ should d而語

29、從句） It is time that I went and picked up my daughter from school.我該去學(xué)校接我女 JL 放學(xué)了。 It s high tiemthat we stopped/should stop this practice. 我們的確該停止這種做法了。7. It is /has beensincedid寸間狀語從句）It is just a week since we arrived here. 我們來這里已一星期了。8. It won ' t be before不了（多長時間）就會 It wasn ' t befor鼓過（多

30、長時間）就 It will be a long time before we finish the task.我們還需要很長時間才能完成這項任務(wù)。 It wasn ' t long before he learned to use the computer.久他就學(xué)會使用計算機了。 易混用其他句型英語中有一些句型不含 it, 但卻易被誤用了it ，常見的有以下句型：1. There is something/nothing wrong/ the matter with sb./ sth.There is nothing wrong /the matter wit h him. He s

31、 just pretending.他沒什么事，他只是在裝呢。2. There is no doubt about 對毫不懷疑 There is no doubt that對毫不懷疑 There is no doubt about his suitability for the job 毫無疑問，他適合這個工作。 There is no doubt that he is hard to deal with. 毫無置疑他很難對付。3. There is no need (for sb.) to do sth. 沒必要 There was no need for him to remain in P

32、aris. 他沒有必要繼續(xù)留在巴黎。4. There is no/a possibility that沒可能/有可能 There is a possibility that the train may be late. 可能火車要晚點。There is no possibility that we ' ll see him thisiWeeke本周末不可能見到他。5. There is a chance that 可能There is a chance that the sick child will get well. 這個生病的孩子可能會好起來的。6. There be no/ s

33、ome differences betweenand和之間沒 /有區(qū)另1JThere are some differences between the two languages.這兩種語言之間有些區(qū)另1J。7. After what seemed + 時間After what seemed a very long time, the wounded soldier came back to life.在經(jīng)過似乎很長的一段時間之后，那個受傷的士兵蘇醒了過來。8. There be difficulty/ trouble (in) doing sth. 干 一 有困難There was no d

34、ifficulty in finding him. 找到他沒費什么事。三 . 形式主語、形式賓語專項練習(xí)1. It's easier than .A. say, do B. to say, to do C. says, does D. saying, doing2. It takes me 30 minutes to school by bike every day.A. going B. to go C. goes D. go3. It s not easy us a foreiagnngluage.A. for; learning B. of; learning C. of; to

35、 learn D. for; to learn4. Children find_ interesting to play computer games.A. that B. which C. it D. it s5. Do you think it important computer well?A. play B. plays C. to play D. playing6. Is necessary to complete the design before National Day?A. this B. that C. it D. he7. I don t think possible t

36、o master a foreign language without much memory work.A. this B. that C. its D. it8. Does matter if he can t finish the job on time?A. this B. that C. he D. itt help.9. Tom s mother kept telling him that he should work harder, but didnA. he B. which C. she D. it10. is a fact that English is being acc

37、epted as an international language.A. There B. This C. That D. It11. I hate when people talk with their mouths full.A. it B. that C. these D. them12. I like in the autumn when the weather is clear and bright.A. this B. that C. it D. one13. happened he is unfit for the office.A. This; that B. That; t

38、hat C. It; that D. He; that14. We took for granted that they would accept our advice.A. that B. this C. it D. them15 .that the scientist will give us a talk next month?A. Is true B. Is it true C. It' s true D. It ' s truly16 .doesn ' t matter much dress you are going to wear.A. This; tha

39、t B. That; who C. It; which D. It; who17.is going to America for further study.A. He is said that B. People said that he C. It was said he D. It is said that he18. They are good friends.is no wonder that they know each other so well.A. This B. That C. There D. It19. Is possible to fly to the moon in

40、 a spaceship?A. this B. there C. that D. it20. She liked when he kissed her.A. him B. that C. one D. it21. will do you good to do some exercise every morning.A. It B. There C. Those D. One22. We think our duty to pay taxes to our government.A. that B. this C. its D. it23. I ' d appreciate if you

41、 would like to teach me how to use the computer.A. that B. it C. this D. you24. . -What do you think made Mary so upset?-_her new bicycle.A. As she lost B, Lost C. Losing D, Because of losing25. Our monitor suggested25 a discussion of this subject.A. to have B. should have C, haveD. having26 . It &#

42、39; s very kind you me.A. for, helping B. of ,help C. for, to help D. of, to help27 What do you think of the book ?-Oh, excellent. It's worth a second time.A, 10 read B. to be read (/巳疝吧 D. being read28. It ' s no use forward to from her soon.A, to look; to hear B. looking; hearing C, lookin

43、g; hear D. look; hear29. Il look the worknien only Iwo hours to Biiish my car, . repai ring B, re pair Ct。repair D. repaired30,cleiin is a 5肝雙州M against disease丸 To be keeping It Kepi C. Keep d. Keeping1 5 BBDCC610 CDDDD 1115 ACCCB1620 CDDDD21 25 ADBCD 2630 DCBADIt”作形式主語和賓語It作形式主語和形式賓語用法，是中學(xué)階段英語學(xué)習(xí)的主

44、要語法項目之一。縱觀歷屆高考題，無論是單項選擇，還是完行填空，it用法始終是反復(fù)考查的重、熱點之一?，F(xiàn)將 it在特殊句型中作形式主語和形式賓語用法，進行如下歸納分析，以供學(xué)習(xí)參考。It用作形式主語當不定式（短語） 、動名詞（短語）或從句在某個句子中作主語時，為保持句子結(jié)構(gòu)前后平衡，避免頭重腳輕，因此常用it作形式主語置于句首，而將真正的主語放在句尾。此時 it只起先行引導(dǎo)作用，本身無詞義。e.g. It is wrong to tell a lie.（說謊是錯誤的。）It為to tell a lie的形式主語It is no use arguing about it.（爭吵是沒用的。）It為a

45、rguing about it的形式主語It is uncertain who will come.（誰要來還不確定。）It為who will come的形式主語It 作形式主語的常見句型： It + be + 形容詞 + to do sth. / doing / thate.g. It is very important to learn a foreign language.（ 學(xué)一門外語非常重要。 ）It is useless crying over the spilt milk.（ 覆水難收。 ）It was really surprising that she married a m

46、an like that.（ 她嫁給那樣的男士真讓人驚訝。 ） It + be + 名詞詞組 + doing / that .e.g. It is no good telling lies.（ 撒謊沒好處。 ）It is a pity that you didn t go to see the film yesterday.（ 你昨天沒看成那部電影真遺憾。 ）It is a truth that there would be no new China without the Communist Party.（ 沒有共產(chǎn)黨就沒有新中國，這是毋庸質(zhì)疑的。 ）It + be + 過去分詞 + tha

47、t .該句型常見動詞有： say, hope, think, suppose, expect, report, know, believe, decide, etc.e.g. It is said that they have invented a new type of computer.（ 據(jù)說他們發(fā)明了一種新型電腦。 ）It is believed that China will become one of the strongest countries in the world.（ 大家都相信中國將會步入世界強國之列。 ）It was reported that more than 1

48、70 thousand people died in the 2004 tsunami.（ 據(jù)報道，至少有十七萬人在2004年那場海嘯中喪生。） It + seems / appears / happen娉不及物動詞+ that .e.g. It seems that he enjoys pop songs very much.（ 似乎他非常喜歡流行歌曲。 ）It appears that Tom might change his mind.9最新資料推薦18（ 看來湯姆可能會改變主意。 ） 若句子是疑問形式，就只能用 it 作形式主語。e.g. Does it matter much tha

49、t they won t come tomorrow?（ 他們明天不來很重要嗎？ ）Is it true that he will go abroad next week?（ 他下周出國是真的嗎？ ） It + takes + （sb.） + some time + to do sth.這是一個表示 “（某人）花多少時間干某事”的句型，其中it 是形式主語，代替后面的不定式（to do sth.）,句型中的sb.也可以省略。e.g. It took me some time to read the reading materials.（ 我花了一些時間才讀完那段閱讀材料。 ）It took h

50、im fourteen hours to go to New Zealand from Shanghai by plane.（ 從上海乘飛機去新西蘭花了他14小時。）How long does it take you to go to Beijing from Qingdao by train?（ 從青島坐火車到北京一般要花多久時間？ ）I am not sure, but I think it takes at least nine hours to get there.（ 我不能肯定，但估計至少要九個鐘頭才能到那兒。 ）二、 It 用作形式賓語當不定式（短語） 、動名詞（短語）或從句在某個

51、句子中作賓語時，為保持句子結(jié)構(gòu)平衡，避免句式結(jié)構(gòu)的混亂，常用it作形式賓語，而將真正的賓語放在句尾。此時it仍只起先行引導(dǎo)作用，本身無詞義。下列四種情況須用 it 作形式賓語： 當不定式 （短語） 、 動名詞 （短語） 或從句在復(fù)合賓語結(jié)構(gòu)中作某些動詞的賓語時 （如 think,make, find, consider, feel, suppose 等）；e.g. They found it pleasant that they worked with us Chinese.（他們發(fā)現(xiàn)與我們中國人一起工作很愉快。 ）I don t feel it difficult to understand

52、 teh Special English.（我覺得理解英語特別節(jié)目并不難。 ）He makes it a rule never to borrow money.（他立志決不向別人借錢。）I think it no need talking about it with them.（我認為沒必要跟他們談。） 某些表示 “喜、怒、哀、樂” 的動詞，如like, enjoy, love, hate 等，往往不能直接接賓語從句；s soe.g. I don t like it that helazy.（我不喜歡他那么懶惰。 ）I hate it when my mother asks me to eat

53、 eggs.（我討厭母親要我吃雞蛋。 ） that 引導(dǎo)的賓語從句不能直接作介詞的賓語；e.g. You may depend on it that we shall always help you.（盡管放心，我們會隨時幫你的。 ）Would you see to it that she gets home early?（你負責保證她早到家，好嗎？）He insisted on it that he was innocent.（他堅持說自己是無辜的。 ） 由及物動詞與介詞組成的固定搭配中，賓語從句若作該動詞的賓語時，須借用 it 。e.g. I leave it to your own ju

54、dgement whether you should do it.（我讓你自己判斷這事是否該做。）We owe it to you that there wasn t a serious accident.（多虧了你才沒有發(fā)生嚴重事故。）試比較下列高考題，選出最佳答案：1. Is necessary to complete the design before National Day? （MET89）A. this B. that C. it D. he2. I don t think possible to master a foreign language without much mem

55、ory work.（MET90）A. this B. that C. its D. it3. Does matter if he can t finish the job on time? （MET91）A. this B. that C. he D. it4. Tom s mother kept telling him that he should work harder, but didn t help. （META. he B. which C. she D. it5. is a fact that English is being accepted as an internationa

56、l language. （MET95）A. There B. This C. That D. It6. I hate when people talk with their mouths full. （MET98）A. it B. that C. these D. them7. Don t that all those who get good grades in the entrance exainmation will prove to bethe most successful. （上海 98）A. take as granted B. take this for grantedC. take that for granted D. take it for granted8. I like in the autumn when the weather is clear and bright. （MET2004）A. this B. that C. it D. one模擬練習(xí)：1. happened he is unfit for the o