情态动词简版及练习.doc

情态动词情态动词表达一种可能、需要、意愿、猜测等意图、倾向。也用来表示语气的委婉和祝愿。一、can的用法1、 能力，会He can drive, but he cant drive well.2、 推测，用于否定与疑问结构中。Can the news be true? It cant be true.3、 允许，请求允许，可表示委婉客气的提出问题或陈述看法。相当于mayYou can go now. Can /Could you help me? Can/Could I borrow your dictionary?二、may 的用法1、请求、建议、可以，当回答由may/might 引起的问题时，肯定用may，否定答语要用mustnt，表示“不准，禁止”You may go now. May/ Can I help you? May I smoke here? Yes, you may. /No, you mustnt./ No, you may not.2、猜测， 可能性很小。 It may not be true.3、祝愿May you be happy! May you succeed! May that day come soon!三、must1、必须，必要、应该。当回答由must表必须引起的问题时，否定答复要用neednt或dont have to 表示不必、无须的意义，而不用mustnt。I must do it myself. You must be ready(准备好的）before noon.- Must I go now? Yes, you must. / No, you neednt./ No, you dont have to.2、mustnt 表示禁止We mustnt waste（浪费）water. We mustnt talk in the library.3、表比较肯定的推测，用于肯定句。“决不可能”用cant。There must be something wrong with the car.- Why isnt Jane in class? She must be sick. He is good at English. He must know the word.5、区别 have toI must/have to get up early. He must/has to go now. You mustnt/dont have to tell Peter about it. They must/will have to come tomorrow. I had to go to hospital.四、need1、需要，用于疑问句和否定句。I neednt go to school today.You neednt return the book now. You can keep it till next week.- Need he come tomorrow/ - Yes, he must. /No, he neednt.2、实义动词This job needs skill and experience. You dont need to worry about me.I need you to help me. We need to ask for some help.The young tree needs watering/to be watered.五、should1、表示义务、责任。“应当” We should respect(尊敬）our parents. You shouldnt be so careless（粗心的）.2、可能，应该会，表示推测、推论 I think she should arrive by nine.3、提出意见、请求、建议 You should write a letter to him.六、would1、表示主观意愿（will的过去式）。 Tom said he would come. She wouldnt leave before she finished the work.2、陈述句和疑问句，表示请求、愿望等 My father would like to see my head teacher. Would you please take a seat? Would you tell me something about your trip?练习1. Look at the man. Hes too old to walk. He be over 70 years old. A. has toB. must C. needD. will2. She _ see a doctor before dark(天黑）.A. mustB. need have toC. needD. must have to3. He didnt know where he _ find the money.A. canB. couldC. mayD. is able to4. “_ I stop here, sir?” “No, please go on.”A. WillB. MayC. WouldD. Ought5. We werent sure whether we _ offer to help or not.A. shouldB. mightC. wouldD. can6. Could I borrow your dictionary?- Of course you _. A. canB. mustC. shouldD. will7. - _ you speak Japanese? - No, I cant.A. CanB. MustC. MayD. Should8. Lisa, _ you speak French? Yes, but only a little.A. needB. mustC. mayD. can9. Excuse me. How can I get to the railway station? Turn left and then follow your nose. You _ miss it!A. mustntB. cantC. shouldntD. neednt10. Schools _ allow（允许）students at least（至少） one hour a day for sports.A. wouldB. mightC. shouldD. could11. Mom, _ I play computer games? Yes, you can. But you have to finish your homework first.A. mustB. mayC. willD. need12. Could I have a look at the photo of your family, Sam?Of course you _. A. mayB. canC. couldD. must13. Thomas, please be quiet. The others _ hear very well.A. cantB. mustntC. shouldntD. neednt14. Is Mr. Brown driving here? Im not sure. He _ come by train.A. mayB. shallC. needD. must15. Where is mom now? Im not sure. She _ be in the kitchen（厨房）.A. shallB. mayC. needD. must16. Will you please stay here for the party? - Sorry, I _. Ill have to go to an important meeting.A. mustntB. needntC. cantD. wont17. Yesterday it rained heavily（下大雨）when school was over. We _ stay in our classroom.A. shouldB. mustC. had toD. could18. Excuse me, madam. Im sorry to tell you that you _ pay for the CD player you broke just now.A. mustB. canC. mayD. neednt19. May I take my pet dog with me into the cinema? The rule says no. So you _.A. canB. mustntC. mayD. neednt20. I enjoy the party very much, but I _ go home, its getting dark.A. have toB. mayC. mustntD. cant21. Would you like to go to the Science Museum this afternoon? Id like to. But Im afraid I _. I have too much homework.A. mustB. cantC. needntD. may22. Mum, _ I go out to play? Yes, you can. But you _ finish your homework first.A. must, mustB. may, mustC. can, cantD. will, need23. Look at the old lady in red. Is it Mrs. King? No, it _ be her. She has gone to Canada.A. willB. mustntC. cantD. may24. Whose exam paper is it? It _ be Li Leis. He always forgets（忘记）to write his name on it.A. cantB. mustC. shouldntD. may25. Are you going to Beijing by plane? Its fast, but expensive. So I am not sure. I _ take a train.A. shouldB. mayC. mustD. will26. Do I have to hand in my paper tomorrow?Yes, you .A. canB. mayC. mustD. should27. Do I have to do it right now?No, you . You can do it tomorrow.A. cantB. needntC. mustntD. shouldnt28. Must I go there for the meeting? Yes, you . Its very important.A. mayB. shouldC. canD. must29. Its nearly six pm. Will you have supper here?Sorry, . I have many things to do.A. I mustntB. I cantC. I needntD. I wouldnt30. Look at the wet（湿的） ground and the drops of water on the grass. I guess it have rained last night. A. should B. can C. must D. will31. Must I park my car behind the building? No. You park it here.A. shouldB. mustC. mayD. would 32. Must we move to the next room? No, you . You may still live here if you like.A. mustntB. cantC. dont have toD. wont 33. She looks very happy. She have passed the exam. I guess so. Its