情态动词.doc

情 态 动 词 复 习情态动词的基本用法1. can/could1) can 表示_ eg. She can drive, but she cant ride a bike. （注）could 与 was/were able to 两者都可以表示过去具备某种能力，但当表示过去成功地做了某事、完成了某一具体动作时，通常不同could而用was/were able to，相当于managed to do sth.eg. The fire spread through the hotel quickly but everyone _ get out.I _ swim across the lake, but now I cant. The driver was badly hurt, but he _ tell the police what had happened.2) can表示_ eg. You can go out to play when you finish your homework. 3) can表示_ eg. -Can/Could I use your dictionary? -Yes, you can. 4) can表示_ eg. How can you be so careless?2. may/might1) may 表示_ eg. -May I have a look at your dictionary? -No, you mustnt. 2) may表示_ eg. You may go home now. 3) may 表示_ eg. May you succeed!3. must1) must表示_ eg. You must finish the task before Sunday. -Must I tell him the news? -No, you neednt/dont have to.(注) mustnt 表示_ eg. You mustnt play with the knife.must/have to都有“必须”之意，但must表示出于主观意愿必须做，而have to表示由于客观原因不得不做.eg. They _ put off the meeting as a result of the rain. We _ put off the meeting.2) must表示_ eg. Must you play the piano so loudly? The baby is sleeping.When I was busy, the neighbour must come and chat.4. will/ would1) will/would 表示_ eg. I will do everything I can to help you. 2) will/would 表示_ eg. Will/Would you help me repair the bike?3) will与would表示_ eg. Oil will float on water. When I was a child, I would sit beside my parents and listened to stories.（注）would 与used to would只说明过去常发生的事，不涉及现在，used to 常含现在已无此习惯 eg. He used to be a heavy smoker. (but now he isnt)5. should1) should 表示_ eg. You should attend the meeting.2) should 表示_ eg. I am surprised that you should speak in such a way.I can hardly believe that a person like him should be so rude.6.need/dare 既可用作情态动词也可用作实义动词 eg. You neednt come so early./You dont need to come so early. He dares to say that in public./He dare say that in public.7.shall 1) shall 用于第一、三人称疑问句中，表示征求对方意见或请求指示 意为“要不要、.好吗”eg. Shall I shut the window? Shall we /he/they wait for you outside? 2) shall用于第二、三人称陈述句，表示说话人的允诺、威胁、警告、命令等语气eg. Dont worry. You shall get the answer this afternoon. （ ）You shall be punished if you break the rules. ( )According to the rules, you shall not leave the classroom before you hand in your paper.( ) 情态动词的特殊用法1.情态动词表示推测情态动词意义使用句型(肯否疑)时态 例句can/could 表示对目前状态或将来情况推测_表示对正在进行情况推测_表示对过去情况推测_1 He must /may be a solider.2 He cant/may not be a sailor.3 They may come tonight.4 He must be staying at home.5 -What can they be talking about?6 They cant have gone abroad.7 Its 9 oclock. They should be at home.may/might mustshould （注）can可用于肯定句，表示客观上的可能性 eg. Even experienced persons can make mistakes. Driving fast can be dangerous. The old can be forgetful. 2.情态动词表示虚拟 1) should have done 表示_ eg.We should have studied last night, but we went to the concert instead. 2) shouldnt have done 表示_ eg. You shouldnt have left home without a word. 3) could /might have done 表示_ eg. I didnt go there yesterday because my car broke down. -You could have borrowed mine. I wasnt using it. 4) neednt have done 表示_ eg. There was plenty of time. We neednt have hurried. 情 态 动 词 检 测 题用适当的情态动词填空1. -Someone is knocking at the door. _ it be Mary? No, it _be her. She left for London last week.2. -Is there a movie on in the cinema tonight? There _ be. I will phone the cinema to find it out.3. -I cant get through to the managers office anyhow. -The line is busy. Someone _(use) the telephone.4. -Whats the matter with you? Im not feeling well in the stomach. I _(eat)so much fish just now.5. We _(book). Look, this restaurant is almost empty.6. -Didnt they come to the party last night? -Yes, they didnt come with us at first, but then we _ persuade them.7. -_ he clean the room now? No, he _. He may do it tomorrow8. -Mike is often absent from class. -Tell him he _ be punished if he goes on behaving like this.9. -_ you make so much noise? -Sorry, Ill try not to.10. I tried to stop him from smoking, but he just _ listen.11. When I was studying at Peking University, I _ take a walk along the lake every evening.12. I cant imagine a gentleman like you _ treat a lady so rudely.13. Its said that there are plenty of hotels in the town. There _ be any difficulty for you to find somewhere to stay.14. You _ fail to pass the exam if you dont study harder. And if you pass it , you _ get a prize.单项选择（高考题） 1. When I was young, I was told that I _ play with matches. A. wouldnt B. neednt C. mustnt D. darent2. You dont need to know the name of the author to find a book. You _ find the book by the title. A. must B. need C. can D. would3. -What kind of house do you want to have? Something big? -Well, it _ be big-that is not important. A. mustnt B. neednt C. cant D. wont 4. She _ have left school, for her bike is still here. A. cant B. wouldnt C. shouldnt D. neednt5. It is usually warm in my hometown in March, but it _ be rather cold sometimes. A. must B. can C. should D. would6. -I cant find my purse anywhere. You _ have lost it while shopping. A. may B. can C. should D. would7. Although this _ sound like a simple task, great care is needed. A. must B. may C. shall D. should8. You _ be hungry already-you had lunch only two hours ago! A. wouldnt B. cant C. mustnt D. neednt9. -Im sorry. I _ at you the other day. Forget it. I was a bit out of control myself. A. shouldnt shout B. shouldnt have shouted C. mustnt shout D. mustnt have shouted 10. According to the air traffic rules, you _ switch off your cell phone before boarding. A. may B. can C. would D. should11. Some people who dont like to talk much are not necessarily shy; they _ just be quiet people. A. must B. may C. should D. would12. The World Wide Web is sometimes jokingly called the World Wide Wait because it _be very slow. A. should B. must C. will D. can13. -Do you know where David is? I couldnt find him anywhere. -Well, he _ have gone farhis coat is still here. A. shouldnt B. mustnt C. cant D. wouldnt14.Is Jack on duty today? -It _ be him. Its his turn tomorrow. A. mustnt B. wont C. cant D. neednt 15. -Whats the name? -Khulaifi. _ I spell that for you? A. Shall B. Would C. Can D. Might16. -Could I have a word with you, mum？ -Oh dear, if you _. A. can B. must C. may D. should17. -May I smoke here? -If you _, choose a seat in the smoking section. A. should B. could C. may D. must18. My MP4 player isnt in my bag. Where _ I have put it? A. ca