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高中情态动词和虚拟语气讲解与练习附答案


高中英语情态动词和虚拟语气
情态动词:记住下面三个方面的用法,可以快速地掌握情态动词。 在遇到情态动词的题的时候,一定要先判断出题目考察的是下面 3 个的哪个方面。 1. 常规(所有) , 2.判断/推测(5 个 +1 个), 3.用于虚拟语气的情态动词(5 个) 1. 常规:所有的情态动词都有常规的形式,大多 12 个。 Can: 表示“能力” ,表示“请求或允许”

。 Could : 用法同上,语气较 can 轻。 Must : “必须/一定,应当” ; “偏要” 。 May : 可能/可以,表示“征求对方意见或允许”,或“祝愿” Might : 用法同上,语气较 may 轻。 Should : 表示“应该,惊讶,委婉/客气” 。 Ought to: 用法同上,语气较 should 重。 Will : “愿,要,会” 表示“意愿,征求意见或提出请求,或执意/决心。 Would : 用法同上,语气较 will 轻。 Shall : 征求对方意见;警告/承诺(用于法律或规定中) ; 应该/必须(语气比 should 重) need/dare:两个“半”情态动词,在肯定句中只能用 need/dare + to do 在否定/疑问句中可用 need/dare + to do 或 need/dare + do 2. 推测/判断:在高中英语中能用作推测或判断的情态动词大多是: can > could (语气由重到轻,用于否定货疑问句中) must > may > might (语气由重到轻,用于肯定句中) should 可用于各种(肯定,否定,疑问)句式中,只能用 should + do 的形式 对“现在”的事的判断的用法:can/could must/may/might + do/be+doing 对“过去”的事的判断的用法:can/could must/may/might + have done 当然其他的情态动词在特殊的情况下也可以用于推测/判断,但不常用所以不必记忆。 3. 可以用于虚拟语气的情态动词有以下 5 个: Should(应该), would(将,愿,要,会) could(能), might(可能,可以) ought to(应该,语气比 should 强) 。 八、虚拟语气:当事情不会发生或发生的可能性很小时,要用虚拟语气。 虚拟的事情可能发生在“现在” , “过去”或“将来” 。一定要先辨别出虚拟的情况发生在“什 么时候” ,记住下面的表格和后面的几个特殊单词你就会用虚拟语气了。

不用情态动词

用情态动词

是 否

虚拟的情况发生 在“现在”

be --- were do ---- did

5 个情态动词 + do

使 用 情

be --- were 虚拟的情况发生 在“将来” do ---- did were to do should( 译为“将”不作情 态动词) + do 虚拟的情况发生 在“过去” had + done/been 5 个情态动词 + have done 5 个情态动词 + do

态 动 词 取 决 于 句

义,如果需要用情态动词的词义时就用 should, could, would, might, ought to 中的某 一个。 在下面的 12 个及物动词后的宾语从句中要用虚拟语气: 三个“建议” : advise, suggest, propose 三个“要求” : ask, require/request, demand 两个“命令” : order, command 一个“希望” : wish 一个“渴望” : desire 一个“宁愿” : would rather 一个“坚持” : insist 注意:这 12 及物动词所衍生出的名词或形容词所引导的同位语从句、表语从句或主语从句 中也要用虚拟语气。 下面的几个句式中也要用虚拟语气: It is requested/suggested/proposed/…+that 从句(从句中要用虚拟语气) It is important/necessary/natural/strange/ a pity + that 从句(从句中要用虚拟语 气) It is ( high/about)time + that 从句,从句中的动词要用 were/did 的虚拟形式。 If only + 从句,从句中也要用虚拟语气。

情态动词和虚拟语气
1. I often see lights in that empty house. Do you think I ______ report it to the police? A. should B. may C. will D. can

2. ---- The room is so dirty. ______we clean it? ---- OK. A. Will B. Shall C. Would D. Can

3. ---- Dare your little daughter stay at home alone at night? ---- _________ A. Yes, she does C. No, she doesn’t B. No, she dare not D. Yes, she dares to

4. It is suggested that a doctor _______ immediately. A. be sent for B. send for C. is send for D. should send for

5. When he was there, he ______ go to that coffee shop at the corner after work every day. A. would B. should C. had better D. might

6. There is no light on; they ______ be at home. A. can’t B. mustn’t C. needn’t D. shouldn’t

7. ---- Mr. Smith, ______ he have all these papers typed for you right away? ---- He ______. They should be ready by 10 o’clock this morning. A. will; must B. shall; has to C. need; will D. would; ought to

8. Research findings show we spend about two hours dreaming every night, no matter what we ______ during the day. A. may have done C. must have done B. can have done D. should have done

9. ---- Don’t press the button, John. ---- What if I _______ A. did B. would C. will D. shall

10. Their basketball team has lots of excellent players, so if there is no unexpected thing to happen, their team ______ win the championship. A. would B. may C. should D. need

11. Jenny ______ her word. I wonder why she changed her mind. A. must have kept would have kept 12. My mother stared at me as if she ________ me before. A. didn’t see B. hasn’t seen C. hadn’t seen D. doesn’t see B. can have kept C. should have kept D.

13. Peter ______ come with us tonight, but he isn’t sure. A. must B. may C. can D. will

14. ---- Could I use your computer while you are out? ---- Of course you _______ A. could B. should C. must D. can

15. I’ve changed to take the job and I ________ change my mind. A. mustn’t B. can’t C. won’t D. may not

16. ---- Is John coming by bus? ---- He should, but he ______ not. He likes riding his bike. A. must B. can C. need D. may

17. ---- I heard they went skating in the mountains last winter. ---- It ______ be true because there was little snow there. A. may not B. won’t C. couldn’t D. mustn’t

18. I was really anxious about you. You ______ home without a word. A. mustn’t leave C. couldn’t have left B. shouldn’t have left D. needn’t leave

19. ---- Mary, how did your Math test go? ---- I had thought I ______, but in fact I came in the top 10 in my class. A. should have failed C. might have failed B. could have failed D. need have failed

20. I wonder how he ______ that to the teacher. A. dare to say B. dare saying C. not dare say D. dared say

21. It’s high time that he settled down in the city and ______ a new life. A. start B. started C. to start D. starting

22. How I wish I ______ to learn Japanese when I was ten. A. would begin B. began C. should begin D. had begun

23. ---- ______ he have been chosen as captain of our school football team? ---- Yes, he ______. Can’t you see he’s wearing an armband? A. Can; can’t must 24. ---- Isn’t that Ann’s mother over there? ---- No, it ______ be her. I’m sure she is taller. A. can’t B. must not C. won’t D. may not B. Must; must have C. Can; must have D. Must;

25. ---- No wonder you caught a cold. You ______ out last night without a coat. ---- I know how silly I was. A. shouldn’t have gone C. couldn’t have gone B. mustn’t have gone D. mightn’t have gone

26. But for your timely help, the boy ______ his life. A. must have lost B. may lose C. might have lost D. should lose

27. What would you say if I ______ you the truth? A. am going to tell B. were to tell C. have told D. would tell

28. ---- You really shouldn’t have shouted to them. ---- Right. I ______ crazy then. A. must be B. must have been D. should have been

C. would have been

29. If I ______ you, I ______ a plane instead of a bus. It’s too far. A. were; would have taken C. were; would take B. had been; would have taken D. had been; would take

30. ---- Were you shown around Venice in a boat with those American tourists? ---- No, but I wish I ______ A. am B. were C. had D. should


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