1、精選優質文檔-傾情為你奉上高中英語情態動詞和虛擬語氣情態動詞：記住下面三個方面的用法，可以快速地掌握情態動詞。在遇到情態動詞的題的時候，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（所有）， 2.判斷/推測(5個 +1個), 3.用于虛擬語氣的情態動詞(5個)1. 常規：所有的情態動詞都有常規的形式，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

2、婉/客氣”。Ought 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（用于法律或規定中）；應該/必須（語氣比should重）need/dare：兩個“半”情態動詞，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 + do2. 推測/判斷：在高中英語中能用作推測或判斷的情態動詞大多是: can > could （語氣由重到輕，用于否定貨疑問句中） mus

3、t > may > 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。3. 可以用于虛擬語氣的情態動詞有以下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：當事情不會發生或發生的可能性很小時，要用虛擬語氣。虛擬的事情可能發生在“現在”，“過去”或“將來”。一定要先辨別出虛擬的情況發生在“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。不用情態動詞用情態動詞虛擬的情況發生在“現在”be - weredo - did5個情態動詞 + do虛擬的情況發生在“將來”be - weredo - did were to doshould(譯為“將”不作情態動詞) + do 5個情態動詞 + do虛擬的情況發生在“過去”had + done/been5個情態動詞 + have done是否使用情態

5、動詞取決于句義，如果需要用情態動詞的詞義時就用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”： insist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

6、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。情態動詞和虛擬語氣1. I often see lights in that empty house. Do you think I _ report it to the polic

7、e? A. should B. may C. will D. can2. - The room is so dirty. _we clean it? - OK. A. Will B. Shall C. Would D. Can3. - Dare your little daughter stay at home alone at night? - _ A. Yes, she does B. No, she dare not C. No, she doesnt D. Yes, she dares to4. It is suggested that a doctor _ immediately.

8、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 every day. A. would B. should C. had better D. might6. There is no light on; they _ be at home. A. cant B. mustnt C. neednt D. shouldnt7. - Mr. Smith, _ he have all

9、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 have done B. can have done

10、 C. must have done D. should have done9. - Dont press the button, John. - What if I _ A. did B. would C. will D. shall10. 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. need11. Jenny _

11、 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. didnt see B. hasnt seen C. hadnt seen D. doesnt see13. Peter _ come with us tonight, but he isnt sure. A. must B. may C. can D.

12、will14. - Could I use your computer while you are out? - Of course you _ A. could B. should C. must D. can15. Ive changed to take the job and I _ change my mind. A. mustnt B. cant C. wont D. may not16. - Is John coming by bus? - He should, but he _ not. He likes riding his bike. A. must B. can C. ne

13、ed D. may17. - I heard they went skating in the mountains last winter. - It _ be true because there was little snow there. A. may not B. wont C. couldnt D. mustnt18. I was really anxious about you. You _ home without a word. A. mustnt leave B. shouldnt have left C. couldnt have left D. neednt leave1

14、9. - 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 B. could have failed C. 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 hig

15、h time that he settled down in the city and _ a new life. A. start B. started C. to start D. starting22. How I wish I _ to learn Japanese when I was ten. A. would begin B. began C. should begin D. had begun23. - _ he have been chosen as captain of our school football team? - Yes, he _. Cant you see

16、hes wearing an armband? A. Can; cant B. Must; must have C. Can; must have D. Must; must24. - Isnt that Anns mother over there? - No, it _ be her. Im sure she is taller. A. cant B. must not C. wont D. may not25. - No wonder you caught a cold. You _ out last night without a coat. - I know how silly I

17、was. A. shouldnt have gone B. mustnt have gone C. couldnt have gone D. mightnt have gone26. But for your timely help, the boy _ his life. A. must have lost B. may lose C. might have lost D. should lose27. What would you say if I _ you the truth? A. am going to tell B. were to tell C. have told D. would tell28. - You really shouldnt have shouted to them. - Right. I _ crazy then. A. must be B. must have been C. would have been D. should have been29. If I _ you, I _ a plane instead of a bus. Its too far. A. were; would h