情态动词教学设计

情态动词（一） 一、哪些动词是情态动词 can—could be able to may—might must have to should/ ought to will—would shall need dare used to had better 二.情态动词有哪些特点 1.不能单独作谓语动词； 2. 没有人称和数的变化；（have to 除外） 情态动词＋Ｖ原 三、从哪些方面去掌握其用法 1.情态动词有过去式； 2.每个情态动词所表示的意义；注意对比； 3.情态动词引起的回答； 4.情态动词表“猜测”的用法； 5.含有情态动词的句子表示提建议. 四、知识点精讲： （一）情态动词的基本用法 (1)can、be able to 和could ①can和be able to都表示能力，意思上没多大区别。但can只有现在和过去时，而be able to则有更多的形式。但当成功地完成某一具体动作时，通常不用could而用was/were able to来表示。这时was/were able to 相当于managed to，表示经过一番努力，终于能够完成某事。 Eg. ________ you use chopsticks? The wounded man still ______________ get to the village and was saved in the end. ②can和could can和could都可以表示能力、技能、许可、建议或请求和可能性。但比较委婉客气地提出问题或陈述看法，一般用could，回答时则用can。 eg. ---__________ you help me carry the bag? ---Yes, I _________. _________ I help you? (2)may/might ①may/might表示可能，但may比might可能性大。 eg. He may be very busy now. 他现在可能很忙。 ②may/might表示“允许”，may用于现在时或将来时，might常用在间接引语中表过去时，但might也可用于现在时间，表示比较委婉语气，回答用may。 eg. He says we________ leave. He said we __________ leave. May I come in? 3 May 还可以表祝愿 eg. May you be happy everyday. 祝你天天开心。 ________ you succeed.= Wish you success. 祝你成功。 （3）must ①must表示“必须，应该”，没有时态变化 eg. As a student , you must work hard.. 作为学生，你必须要努力学习。 ②must表示肯定的推测 “想必，一定” eg. The light is still on, so he must be at home. ③mustn’t 表示禁止做某事 eg. You mustn’t smoke in the office. （4）have to have to 表示“必须、不得不”，是由于某种外界（客观）原因而“必须”，“不得不”做某事，也可表示经常的或习惯性的事“必须”做。have to的否定形式表示不必。have to可用于多种时态中。 eg. You will have to clean your own boots when you join the army. （5）should / ought to ①should和ought to表示“应当、应该”，前者比后者语气轻 eg. You should / ought to work hard. ② shouldn’t / oughtn’t to表示禁止之意 ③should have done “本应该做某事”而事实上却没有做,含责备之意 shouldn’t have done “本不应该做某事”而事实上却做了 练习： 1.____ you be happy! A. May B. Can C. Must D. Would 2. Must we come tomorrow? --- ____ A. No, you can't B. No, you needn't C. No, you mustn't D. No, you may not 3. Some people feel that handguns______. A. should control B. should be controlled C. must be controlling D. can be control 4.I thought you____ like something to read, so I have brought you some books. 　　　 A .may　　 B. might　　 C. could　　 D. must 5. Johnny, you ____ play with the knife; you ____hurt yourself.　 A. won't; can't 　　 B. can't; shouldn't C. shouldn't; must 　 D. mustn't; may 6. Jenny______ have kept her word. I wonder why she changed her mind.    A. must       B. should     C. need       D. would 7.---Could I borrow your dictionary?     ---Yes, of course you_________     A. might     B. will C. can   D. should 8. ---Sir, you _____ be sitting in this waiting room. It is for women and children only.    A. oughtn't to    B. can't    C. won't     D. needn't 9. The fire spread through the hotel very quickly but everyone ______ get out. A. had to B. would C. could D. was able to 10. --- Are you coming to Jeff's party?　 --- I'm not sure. I ________go to the concert instead.　　A．must B．would C．should D．might 11. Mr. Bush is on time for everything. How _______ it be that he was late for the opening ceremony?        A．can     B．should      C．may     D．must 12. I often see lights in that empty house. Do you think I _____ report it to the police? A. should B. may C. will D. can 1 江燕林 2012-12-19 学科网（北京）股份有限公司 $$