1、高一英語提高情態動詞一、Definition:表示說話人對某一行為的態度和觀點。二、常見的情態動詞的用法1. can, could, be able to1) Man cannot live without water.We shall be able to finish the work next week.2) A: Could I watch the Olympics ?B: Yes, you can. No, you cant.3) How can he be so rude like this?在疑問句中用can表示驚訝，懷疑，不相信的語氣。4) 推測（ 用于_句，_問）certai

2、ntyYou cantcouldnt be tired- youve only been working for an hour.（2005年全國）Mr. Bush is on time for everything. How cancould it be that he was late for the opening ceremony?(2001上海春季）5) The World Wide Web is sometimes jokingly called the world Wide Wait because it can be very slow.（2005漸江）6)We cant ha

3、ve too many friends.2.may/might1）表示_ might比may 更_A: May I have a look at your photo?B: Yes, you may (can). No, you mustnt cant. No, youd better not.2).certainty推測（用于_句和_句）Excuse me. Is this the right way to the Summer Palace? Sorry, I am not sure. But it might be.Is John coming by train?（2002)He sho

4、uld, but he may not. He likes driving his car.He may not have finished the work.(_）He cant have left without saying goodbye to them for he always had good manners.(_）may/might as well do sth. _Now that no one wants to eat the food, you _ as well throw it into the dustbin.3. must1). permission-Must I

5、 clean all the rooms?-Yes, you must. -No, you neednt No, you dont have to.mustnt _；_You mustnt speak like that to your mother.You mustnt miss the good chance.2).must, have to3）must 在疑問句中還表示“硬要，偏要，一定要”John, look at the time. _ you play the piano at such a late hour?3) 推測 (只用于_句）You must be hungry aft

6、er the long walk.The classmates must have cleaned the classroom because it is very clean.The boys must be playing football on the playground.He plays basketball very well. He must have practiced it a lot.Our headmaster must have been to USA, for he knows the country so much. must have done 的反意疑問句 Yo

7、u must have seen the film, havent you? You must have seen the film last week, didnt you? His parents must have beaten him, havent they? His parents must have beaten him yesterday, didnt they?Practice:1.Mary _ be in Paris，for I saw her in the town only a few minutes agoAmustn't Bcan't Cshould

8、n't Dmay not2.Peter come with us tonight，but he isnt very sure yetA must B may C can D will 3.-Are you coming to Jeffs party-Im not sure I go to the concert insteadA must B would C should D might 4.It _ last night，for the ground was wet this morning Amust have rained Bmay have rained Cmust rain

9、Dmight rain 5. Jenny must have won the match,_?A. hasn't she B. doesn't she C. mustn't she D. can't she 6. The river is rising. It _last night.A.must be raining B. must rain C. might have rained D. must have rained7. Why! I couldn't get you on the phone this morning.We _tennis in

10、 the yard when you phoned.A. must be playing B. could be playing C. must have played D. must have been playing8. You must have seen the film last night, _ you?A. havent B. mustn't C. didn't D. hadn't9. Mr. Zhou must be working in the office, _he? A. mustn't B. can't C. doesn'

11、t D. isn't10. There were already five people in the car, but they managed to take me as well. It _a comfortable journey A. cant be B. shouldnt be C. mustnt have been D. couldnt have been4. should/ought to 1).give adviceYou should not/ought not to eat a lot before swimming.The students should spe

12、nd all their time working at their lessons.I often see lights in that empty house. Do you think I should report it to the police.?2). Certainty(推測）常譯成：_They should be there by now, I think.3)虛擬語氣中的用法5. shall 1). permission常用于第_人稱的疑問句中，表示征求對方意見Shall we/I /He/She/They do some exercise this morning?A:

13、Shall he come in? B: Ok.2). 用于_人稱的陳述句，表示說話人給對方的命令,警告，允諾，威脅You shall fail if you dont work harder.He shall have the book when I finish reading.He shall be punished.(威脅）-Excuse me ,but I want to use your computer to type a report.-You _ have my computer if you dont take care of it.(2005湖南） A. shant B.

14、 might not C. neednt D. shouldnt3) 一些條約、規章制度中的規定，必須做或不能做的事。The students shant go out after 12.6.will/would1) .決心(可譯為決心(不),一定要)I will make this radio work even if I have to stay up all night.I wont have anything said against her.I promised I would do my best2). 習慣（可譯為總是，老是）He will sit for hours readi

15、ng.He will talk for hours if you give him the chanceHe would sit there for hours sometimes, doing nothing at all.3). 表示意愿（人愿意, 肯，會）傾向(物能力）If you will allow me ,I will see you home.He wouldnt let the doctor take his blood pressure.-Look, the lights are burning. - Oh yes, I will go and turn them off.T

16、he car wont start.7. need/dare可兼做行為動詞的情態動詞：need 、 dare 作為情態動詞時，兩個詞常用于疑問句和否定句；用作實義動詞時，可用于各種句式情態動詞時：-Need I help you? -Yes, please.You neednt telephone him now.How dare you talk to the teacher like that?The girl dare not go out alone at night.用作實義動詞時We need to tell him the news.You dont need to tell h

17、im the news.Do the flowers need watering?I didnt dare to tell you the truth.Would you dare to catch the snake with your hand?The boy dares to do anything he likes.判斷下列句子的正確與否：How dare you say such a thing?How dare you to say such a thing?He darent to speak English before such a crowd, did he?He dare

18、nt speak English before such a crowd, dare he?Nobody need to be afraid of catching the disease.Nobody need be afraid of catching the disease.These dishes needed be cleaned carefully.These dishes need to be cleaned carefully.These dishes need cleaning carefully.否定的情態動詞的用法:mustnt _neednt _ ( = dont ha

19、ve to =dont need to do)cant _; _may not 不可以; _shouldnt _ ( = ought not to )shant _darent 不敢used to 和would的區別1.都可以表示過去重復的習慣，used to 含有“過去怎樣而現在卻不這樣了”的意思；而would則單純表示過去的習慣性動作，常和often, everyday等連用。He would take a walk near the forest in the evening. （現在可能散步也可能不散步了）He used to take a walk near the forest i

20、n the evening. （而現在不散步了）2.不能用would的情況1). She isnt what she used to be. 她跟過去不一樣了。（表示對比，不可用would）2). There used to be a park. 以前這里有一個公園。表示過去的狀態，只能用 _，不可用would。情態動詞+ have done的用法 1“shouldought to have done表示 “本應當做某事，而實際上并沒有做”；“shouldntoughtnt to have done”表示 “_”。2. could have done _ (用于_句中時)couldnt hav

21、e done _3. may/might have done _ may/might not have done 也許沒做過某事4. must have done _5. neednt have done 表示 “_” You could have done better, but you didnt try your best.He couldnt have been to that town.He may not have finished the work.If we had taken the other road, we might have arrived earlier.You

22、neednt have watered the flowers, for it is going to rain.You ought to have helped him.Practice1. Im afraid Mr. Harding_ see you now. Hes busy. (2010全國卷, 29)A. cant B. mustnt C. shouldnt D. neednt2.- Good morning. Ive got an appointment with Miss Smith in the Personnel Department. - Ah, good morning.

23、 You _ be Mrs. Peters. (2010北京，23)A. might B. must C. would D. can3. You _ buy a gift, but you can if you want to. (2010湖南，23)A. must B. mustnt C. have to D. dont have to4. I have told you the truth. _ I keep repeating it?(2010江西，23)A. Must B. Can C. May D. Will5. I got up early, but I _ so because

24、I had no work to do that morning.A. mustnt have done B. wouldnt have done C. neednt have done D. cant have done6. A left-luggage office is a place where bags_ be left for a short time, especially at a railway station.(2003) A. should B. can C. must D. will7.I hear youve got a set of valuable Austral

25、ian coins._ I have a look? Yes, certainly.A. Do B. May C. Shall D. Should8. Peter _ be really difficult at times even though hes a nice person in general.A. shall B. should C. Can D. must9. You _ be hungry already - you had lunch only two hours ago.A. wouldnt B. cant C. Mustnt D. neednt10. I _ have

26、gone to the concernt because because I know nothing about that kind of music. A.couldnt B. mustnt C.shouldnt D.oughtnt11.-Hi, Tom. Any idea where Jane is ? - She _ in the classroom. I saw her there just now.A. shall be B. should have been C. must be D. might have been12.You _ park here! Its an emerg

27、ency exit.A. wouldnt B. neednt C. couldnt D. mustnt13.- Can I pay the bill by check? - Sorry, sir. But it is the management rules of our hotel that payment _ be made in cash.A. shall B. need C.will D. can14.-I dont mind telling you what I know. -You_. Im not asking you for it. (2004江蘇)A. mustnt B. m

28、ay not C. cant D. neednt15. Write to me when you get home. -_.（春季）A. I must B. I should C. I will D. I can16. Is Jack on duty today? It   _ be him. Its his turn tomorrow.（2006四川）    A. mustnt  B. wont  C. cant  D. neednt17. I wonder how he _ that to the teache

29、r.A. dare to say B. dare saying C. not dare say D. dared say 18.When the foreign guest arrived, I found him speaking good Chinese, I _ his speech into Chinese the night before.A. neednt translate B. didnt need to translate C. neednt have translate D. didnt need translating19. May I smoke here ? If y

30、ou _, choose a seat in the smoking section.（2006山東）A. should   B. could   C. may   D. must20. There is someone knocking at the door.         it be Tom?  A. can  B. must  C. should  D. ought to21.Some aspects of a pilots job _ be boring, and pilots often _work at inconvenient hours.（2006湖南） A. can; have to  B. may; can      C. have to; may     D. ought to; must2