高中情態(tài)動詞和虛擬語氣講解與練習附答案

1、高中英語情態(tài)動詞和虛擬語氣情態(tài)動詞：記住下面三個方面的用法，可以快速地掌握情態(tài)動詞。在遇到情態(tài)動詞的題的時候，一定要先判斷出題目考察的是下面3個的哪個方面。1 .常規(guī)（所有），2.判斷/推測（5個+1個）,3.用于虛擬語氣的情態(tài)動詞 （5個）2 .常規(guī)：所有的情態(tài)動詞都有常規(guī)的形式，大多 12個。Can:表示“能力”，表示“請求或允許”。Could :用法同上，語氣較 can輕。Must :“必須/一定，應當"；“偏要”。May :可能/可以，表示“征求對方意見或允許”，或“祝愿”Might : 用法同上，語氣較 may輕。Should :表示“應該，驚訝，委婉 /客氣”。Ought

2、 to: 用法同上，語氣較 should重。Will :“愿，要，會”表示“意愿，征求意見或提出請求，或執(zhí)意 /決心。Would :用法同上，語氣較 will輕。Shall :征求對方意見；警告/承諾（用于法律或規(guī)定中）；應該/必須（語氣比should重）need/dare :兩個 "半”情態(tài)動詞，在肯定句中只能用need/dare + to do在否定/疑問句中可用 need/dare + to do 或need/dare + do3 .推測/判斷：在高中英語中能用作推測或判斷的情態(tài)動詞大多是：can > could（語氣由重到輕，用于否定貨疑問句中）must > ma

3、y > might（語氣由重到輕，用于肯定句中）should可用于各種（肯定，否定，疑問）句式中，只能用 should + do 的形式對“現在”的事的判斷的用法： can/could must/may/might + do/be+doing對"過去”的事的判斷的用法： can/could must/may/might + have done當然其他的情態(tài)動詞在特殊的情況下也可以用于推測/判斷，但不常用所以不必記憶。4 .可以用于虛擬語氣的情態(tài)動詞有以下5個：Should（應該）,would （將，愿，要，會） could （能）,might （可能，可以）ought to （

4、應該，語氣比 should強）。八、虛擬語氣：當事情不會發(fā)生或發(fā)生的可能性很小時，要用虛擬語氣。虛擬的事情可能發(fā)生在“現在”，“過去”或“將來”。一定要先辨別出虛擬的情況發(fā)生在“什 么時候”，記住下面的表格和后面的幾個特殊單詞你就會用虛擬語氣了。虛擬的情況發(fā)生在“現在”be - weredo did5個情態(tài)動詞+ do虛擬的情況發(fā)生在“將來”be - weredo didwere to doshould（譯為“將”不作情態(tài)動詞）+ do5個情態(tài)動詞+ do虛擬的情況發(fā)生在“過去”had + done/been5個情態(tài)動詞 + have done不用情態(tài)動詞用情態(tài)動詞否 使 用 情 態(tài) 動 詞

5、取 決 于 句義，如果需要用情態(tài)動詞的詞義時就用should, could, would, might, ought to中的某 一個。在下面的12個及物動詞后的賓語從句中要用虛擬語氣：三個 "建議"： advise, suggest, propose三個"要求”： ask, require/request, demand兩個"命令"：order, command一個"希望"：wish一個"渴望"：desire一個"寧愿"：would rather一個"堅持"：in

6、sist注意：這12及物動詞所 衍生出的名詞 或形容詞 所引導的同位語從句、表語從句 或主語從句中也要用虛擬語氣。下面的幾個句式中也要用虛擬語氣：It is requested/suggested/proposed/ +that 從句（從句中要用虛擬語氣）It is important/necessary/natural/strange/ a pity + that從句 （從句中要用虛擬語氣）It is （ high/about）time + that從句，從句中的動詞要用were/did 的虛擬形式。If only + 從句，從句中也要用虛擬語氣。情態(tài)動詞和虛擬語氣1. I often se

7、e lights in that empty house. Do you think I report it to the police?A. shouldB. mayC. willD. can2. The room is so dirty. we clean it?OK.A. WillB. ShallC. WouldD. Can3. Dare your little daughter stay at home alone at night?A. Yes, she does B. No, she dare notC. No, she doesn tD. Yes, she dares to4.

8、It is suggested that a doctor immediately.A. be sent for B. send for C. is send for D. should send for5. When he was there, he go to that coffee shop at the corner after work everyday.A. wouldB. should C. had better D. might6. There is no light on; they be at home.A. can tB. mustn tC. needn tD. shou

9、ldn t7. Mr. Smith, he have all these papers typed for you right away?He . They should be ready by 10 oclock this morning.A. will; must B. shall; has to C. need; will D. would; ought to8. Research findings show we spend about two hours dreaming every night, no matter what we during the day.A. may hav

10、e done B. can have doneC. must have done D. should have done9. Don t press the button, John.What if I A. didB. wouldC. willD. shall10. Their basketball team has lots of excellent players, so if there is no unexpected thing to happen, their team win the championship.A. wouldB. mayC. shouldD. need11.

11、Jenny her word. I wonder why she changed her mind.A. must have kept B. can have kept C. should have kept D.would have kept12. My mother stared at me as if she me before.A. didn t seeB. hasn t seenC. hadn t seenD. doesn t see13. Peter come with us tonight, but he is nt sure.A. mustB. mayC. canD. will

12、14. Could I use your computer while you are out?Of course you A. couldB. shouldC. mustD. can15. Ive changed to take the job and I change my mind.A. mustn t B. can tC. won tD. may not16. Is John coming by bus?He should, but he not. He likes riding his bike.A. mustB.canC. needD.may17. I heard they wen

13、t skating in the mountains last winter.It be true because there was little snow there.A. may notB. won tC. couldn tD. mustn t18. I was really anxious about you. You home without a word.A. mustn t leaveB. shouldn t have leftC. couldn t have leftD. needn t leave19. Mary, how did your Math test go?I ha

14、d thought I , but in fact I came in the top 10 in my class.A. should have failed B. could have failedC. might have failed D. need have failed20. I wonder how he that to the teacher.A. dare to say B. dare saying C. not dare say D. dared say21. Its high time that he settled down in the city and a new

15、life.A. startB. started C. to start D. starting22. How I wish I to learn Japanese when I was ten.23. he have been chosen as captain of our school football team?Yes, he . Can t you see hes wearing an armband?A. Can; can t B. Must; must have C. Can; must have D. Must; must24. Isn t that Ann s mother o

16、ver there?No, it be her. Im sure she is taller.A. can tB. must not C. won tD. may not25. No wonder you caught a cold. You out last night without a coat.B. mustn t have goneD. mightn t have gone his life.I know how silly I was.A. shouldn t have goneC. couldn t have gone26. But for your timely help, t

17、he boyA. 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 beenC. would have been D. should have b