2022年it做形式主语用法大全含练习及答案3.docx

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1、名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -It 作形式主语常见句型 动词不定式,动名词或主语从句作主语时,通常把它们放在谓语动词前,而用 it 作形式主 语,放到句首,常见句型有：1. It + be + 形容词 +主语从句,如：It is uncertain whether he can come to Jenny s birthday party or not. 2. It + be + 名词词组+ 主语从句,这类名词有：a fact, a pity, a shame, an honour,a question等,如：Its a pity tha

2、t you missed the exciting football match. It remains a question whether he will come or not. 3. It + be + 过去分词+ 主语从句,这类过去分词有：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 oper

3、ation to the patient. 4. It + 不及物动词 seem, appear, happen等 + 主语从句 , 这类不及物动词有：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 + 形容词 + for sb. ）+ 动词不定式 这类句型常用形容词 easy, difficult, hard, important, possible,wise 等作表语,有时候为了强 调不定式动作的执

4、行者,常在不定式前加 for sb ,如：Its necessary for the young to master two foreign language. It is unwise to give the children whatever they want. 这类形容词有：easy, difficult, hard, important, possible ,wise 6. It + be + 形容词 + of sb. + 动词不定式,这类形容词常是表示心理品质 ,性格特点的形容 词,如：kind, nice stupid, clever, foolish, polite, impo

5、lite, silly, selfish, considerate 等；某人和这 些形容词可以构成主系表结构；如：Its 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 + 名词词组 + 动词不定式,如：It is not a good

6、 habit to stay up too late. 8. It + be + 名词或形容词+ 动名词,这类名词和形容词经常是：good, no good, no use, a waste of, useless, senseless等,如：Its a waste of time talking to her any more. It is no use arguing about the matter with him. 9. It + take sb. + 时间（金钱） + 动词不定式,如：It took the workers almost three years to finish

7、building the dam. It will take a whole day to get to the top of the mountain on foot. 细心整理归纳 精选学习资料 - - - - - - - - - - - - - - - 第 1 页,共 17 页 - - - - - - - - - 名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -实战演练：1. It is generally considered unwise to give a child he or she wants. NMET 1997 A. however

8、B. whatever C. whichever D. whenever 2. In fact is a hard job for the police to keep order in an important football match. 2001 上海 A. this B. that C. there D. it 3. is a fact that English is being accepted as an international language. NMET1995 A. There B. This C. That D. It 4. Is necessary to take

9、off our shoes when we enter the lab. MET88 A. everyone B. this C. her D. it 5. _ will take you a lot of time to find him in the crowd. A. It B. I C. We D. They 6. It is no use his _ there, the situation is hopeless now. A. to go B. to be going C. going D. having gone 7. It is never too late to learn

10、, _. A. is it B. isn t it C. does it D. doesn t it 8. _ is known to all that Shenzhou VI Launched Successfully. A. As B. What C. It D. That 9. _ is reported in the newspaper, the Earthquake in east Chinas Jiangxi Province killed 13 people A. It B. As C. That D. What 10. _ certain that his invention

11、will make peopleA. That s B. This is C. It s D. What s s life convenient. 11. _ 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 said 12. _ that their daughter got an opportunity to study abroad. A. It s a exciting news B. This is an e

12、xciting news C. This is exiting news D. It s exciting news 参考答案：1 5 BDDDA 6 10CACAC 11 12CD 使句子显 it 作形式主语：而只是帮忙把真正的主语移到句子后部去,it 作形式主语时没有详细的意义,得平稳一些； it 作形式主语时,可以代替三种形式：不定式、动名词和主语从句； it 代替不定式短语常用于以下句型中：It + be + 形容词+ for/of sb. to do sth. It + be + 名词 + to do sth. It takes sb. some time to do sth. 干

13、花了某人 时间It s up to sb. to do sth. 干 是某人的职责或义务It is everyones duty to obey the law.遵守法律是每个人的义务；（ it 作形式主语 , 代替不定式短语 to obey the law）It is difficult for a foreigner to learn Chinese. 对于一个外国人来说,学习汉语是困难的；（ it 作形式主语 , 代替不定式短语 to learn Chinese）It is not right to use these places as rubbish dumps. 细心整理归纳 精选

14、学习资料 - - - - - - - - - - - - - - - 第 2 页,共 17 页 - - - - - - - - - 名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -把这些地方用来倒垃圾是不对的；（it 作形式主语 , 代替不定式短语to use these places as rubbish dumps）It took them a year to build the bridge. 建这座桥花了他们一年的时间；（ it 作形式主语 , 代替不定式短语 to build the bridge ）It be + 形容词 + for sb. t

15、o do sth. 与 It be + 形容词 +of sb. to do sth. ：假如句型中的形容词描述的是 sb.的品质、品行,在规律上可以作 sb.的表语,就 sb.前应用介词 of,否就就用 for ；It s necessary for us to use a short-wave radio to pick up the programmes. 我们用一台短波收音机收听这些节目是必要的；It s kind of you to help me.感谢你对我的帮忙； （ = You are kind to help me. ）It was foolish of him to give

16、 up the job. 他舍弃那工作是愚蠢的； it 代替动名词短语：（= He was foolish to give up the job 动名词作主语用后置形式的情形远不及不定式那么普遍,常限于 no good, no use, useless, waste 等词的后面；It is no good/ use having a car if you can drive. t 假如你不会开车,有车也没用； it 作形式主语 ,代替动名词短语 having a car It is a waste of time watching TV. 看电视是铺张时间； （ it 作形式主语 ,代替动名词

17、短语 watching TV ）It is no use asking him. 问他没有用； （ it 作形式主语 ,代替动名词短语 asking him ） it 代替主语从句：这个主语从句可以用连词that 引导,也可以用连接代词或连接副词引导；It was clear that they had no desire for peace. 很清晰他们没有和平的诚心；（ it 作形式主语 ,代替主语从句that they had no desire for peace）It is doubtful whether she will be able to come. 她能否来仍很难说； （

18、it 作形式主语 ,代替主语从句 It was clear enough what she meant. whether she will be able to come ）她的意思是够清晰的； （ it 作形式主语 ,代替主语从句 what she meant）用 it 作形式主语,把真正的主语从句移至后面的常见句型有：It is a pity/ a shame/ a fact/ an honour/ good news/ no wonder/ a wonder that t come. It was a pity that the engineer couldn惋惜工程师没能够来；It i

19、s a wonder that he continues to gamble when he always loses. 令人惊奇的是他始终输仍始终赌；It is + 形容词（如：strange/ natural/ surprising/ obvious/ true/ fortunate/ wonderful/ 第 3 页,共 17 页 - - - - - - - - - funny/ possible/ impossible/ likely/ unlikely/ clear/ unusual/ certain/ important） that It is certain that he wi

20、ll win. 他肯定会取胜； ；It seems/ happened/ turned out/ suddenly struck me/ occurred to me that It happened that I wasnt there that day. 恰好那天我不在那里；It + be + 过去分词（如：said/ reported/ announced/ decided/ expected/ hoped/ known/ believed）that 细心整理归纳 精选学习资料 - - - - - - - - - - - - - - -名师归纳总结 精品学习资料 - - - - - -

21、- - - - - - - - -It is said that nothing has been done about it. 据说至今对此没实行任何措施；It is reported that more than twenty people were killed in that bus accident. 据报道在那次的公共汽车事故中有二十多人丧生；* 留意要在 It is suggested/required/desired/ordered/proposed 气：should + 动词原形 It is requested that he give a performance at th

22、e party. 有人恳求他在聚会上表演一个节目；的主语从句中用虚拟语It is suggested that we should get everything ready by tonight. 建议一切在今晚预备好；It doesn t matter + 连接代词或副词It doesn t make too much difference+连接代词或副词It doesn t matter whether he comes or not.他来仍是不来都没关系；It won t make much difference whether you go today or tomorrow. 你今日

23、去也好,明天去也好,关系不大； it 作形式宾语：it 作形式宾语时,可以代替三种形式：不定式、动名词和宾语从句；it 作形式宾语时,需具备两个条件：真正的宾语是不定式、动名词或从句 有宾语补足语具备了这两个条件,形式宾语it 肯定要用； it 代替不定式短语think/ find/ feel/ consider/ make/ regard I find it pleasant to work with him. 形容词 /名词 + 不定式短语it 作形式宾语,代替不定式短语 to work with him 我觉得和他一起工作很开心；They felt it difficult to fin

24、ish the work in such a short time. （ it 作形式宾语,代替不定式短语to finish the work in such a short time ）他们认为在这么短的时间内完成这项工作是困难的；All these noises made it impossible for me to go on with the work. （ it 作形式宾语, 代替不定式短语to go on with the work ）这些噪音使我无法连续工作； it 代替动名词短语 这只限于少数句型,在多数情形下用不定式时更多一些 The professor considers

25、 it no good reading without understanding. 这位教授认为阅读而不懂得没有好处；He found it useless no use arguing with him. 他发觉和他辩论没有用；He thought it absolutely senseless attempting the impossible. 想做不行能的事情,他认为是完全没道理的； it 代替宾语从句：We all thought it a pity that the conference should have been cancelled. 会议取消了我们都感到很遗憾；I to

26、ok it for granted that they were not coming.我想他们准是不会来的了；I ll see to it that everything is ready in time.我负责使一切都按时预备好； 含 it 的常用句型英语中有一些固定句型中含有it, 应留意这些句型的使用；细心整理归纳 精选学习资料 It be + 被强调部分+ that/ who + 其他成分 第 4 页,共 17 页 - - - - - - - - - - - - - - - - - - - - - - - - 名师归纳总结 精品学习资料 - - - - - - - - - - - -

27、 - - -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 last year that I met Peter in Japan. * not until 也可用于强调句型例 Mr Brown didn t come back until eleven oclock.可变为： It w

28、as not until eleven oclock that Mr Brown came back. * 强调句也可变为特殊疑问句例 It was in 1949 that the PRC was founded. 可变为： When was it that the PRC was founded. It s + 地点状语 + that （强调句）It s + 地点名词 + where 定语从句 It is the town where I was born. the town 为地点名词,定语从句 这是我诞生的镇子； It was in the town that I was born.

29、in the town 为地点状语,强调句型 我诞生在这个镇子； It s + 时间名词 + when 时间状语从句 It s +时间状语 +that 强调句 It was at 8 oclock that he returned. at 8 oclock 是时间状语, 强调句 他是在八点钟回来的；It was 8 oclock when he returned.8 o是时间名词, 时间状语从句 他回来的时候是八点钟； if it is convenient to you 假如你便利的话If it is convenient to you, you can start tomorrow. 假如

30、便利的话,你明天可以动身； believe it or not 信不信由你Believe it or not, Ill go abroad next month.不管你信仍是不信,我下个月要出国； It s time that did / should do 定语从句 了；It is time that I went and picked up my daughter from school. 我该去学校接我女儿放学It s high tim e that we stopped/should stop this practice. 我们的确该停止这种做法了； It is /has been s

31、ince did 时间状语从句 It is just a week since we arrived here. 我们来这里已一星期了；It won t be before 用不了（多长时间）就会It wasn t before 没过（多长时间）就It will be a long time before we finish the task. 我们仍需要很长时间才能完成这项任务；It wasn t long before he learned to use the computer. 不久他就学会使用运算机了； 易混用其他句型英语中有一些句型不含it, 但却易被误用了it,常见的有以下句型：

32、 There is something/nothing wrong/ the matter with sb./ sth. There is nothing wrong /the matter wit h him. He s just pretending.他没什么事,他只是在装呢； There is no doubt about 对 毫不怀疑 There is no doubt that 对 毫不怀疑There is no doubt about his suitability for the job 毫无疑问,他适合这个工作；细心整理归纳 精选学习资料 - - - - - - - - - -

33、 - - - - - 第 5 页,共 17 页 - - - - - - - - - 名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -There is no doubt that he is hard to deal with. 毫无置疑他很难应付； There is no need for sb. to do sth. 没必要 There was no need for him to remain in Paris. 他没有必要连续留在巴黎；There is no/a possibility that 没可能 /有可能There is a possibil

34、ity that the train may be late. 可能火车要晚点；There is no possibility that well see him this weeke nd.我们本周末不行能见到他； There is a chance that 可能 There is a chance that the sick child will get well. 这个生病的孩子可能会好起来的； There be no/ some differences between and 和 之间没 /有区分There are some differences between the two l

35、anguages.这两种语言之间有些区分； After what seemed + 时间 After what seemed a very long time, the wounded soldier came back to life. 在经过好像很长的一段时间之后,那个受伤的士兵清醒了过来； There be difficulty/ trouble in doing sth. 干 有困难 There was no difficulty in finding him. 找到他没费什么事；三. 形式主语、形式宾语专项练习1. Its easier _ than _. A. say, do B.

36、 to say, to do C. says, does D. saying, doing 2. It takes me 30 minutes _ to school by bike every day. A. going B. to go C. goes D. go 3. Its not easy _ us _ a foreign l anguage. A. for; learning B. of; learning C. of; to learn D. for; to learn 4. Children find_ interesting to play computer games. A

37、. that B. which C. it D. its5. Do you think it important _ computer well. A. play B. plays C. to play D. playing 6. Is _ necessary to complete the design before National Day. A. this B. that C. it D. he 7. I dont think _ possible to master a foreign language without much memory work. A. this B. that

38、 C. its D. it 8. Does _ matter if he cant finish the job on time.A. this B. that C. he D. it 9. Tom s mother kept telling him that he should work harder, but _ didnt help.A. he B. which C. she D. it 10. _ is a fact that English is being accepted as an international language. A. There B. This C. That

39、 D. It 11. I hate _ when people talk with their mouths full. A. it B. that C. these D. them 12. I like _ in the autumn when the weather is clear and bright. A. this B. that C. it D. one 13. _ happened _ he is unfit for the office. A. This; that B. That; that C. It; that D. He; that 14. We took _ for

40、 granted that they would accept our advice. A. that B. this C. it D. them 细心整理归纳 精选学习资料 - - - - - - - - - - - - - - - 第 6 页,共 17 页 - - - - - - - - - 名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -15. _ that the scientist will give us a talk next month. A. Is true B. Is it true C. Its true D. Its truly t

41、 matter much _ dress you are going to wear. 16. _ doesnA. This; that B. That; who C. It; which D. It; who 17. _ 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 he 18. They are good friends. _ is no wonder that they know each other

42、 so well. A. This B. That C. There D. It 19. Is _ possible to fly to the moon in a spaceship. A. this B. there C. that D. it 20. She liked _ when he kissed her. A. him B. that C. one D. it 21. _ will do you good to do some exercise every morning. A. It B. There C. Those D. One 22. We think _ our dut

43、y to pay taxes to our government. A. that B. this C. its D. it 23. Id appreciate _ if you would like to teach me how to use the computer.A. that B. it C. this D. you 24 . -What do you think made Mary so upset. -_ her new bicycle.A. As she lostB. Lost C. LosingD. Because of losing25. Our monitor suggested 25_a discussion of this subject. A. to have B. should have C. have D. having 26. Its very kind _ you