1 / 10

情 态 动 词 can, may, must 的用法

Chapter3 language. 情 态 动 词 can, may, must 的用法. 定义和形式： 情态动词本身有一定的情态意义 , 是表示说话人的情绪 , 态度或语气的动词 , 但 不能单独作谓语 , 只能和其他 动词原形 构成谓语。 情态动词有 can ， could, may, might, must , shall, should, will, would, ought to, need, dare, used to 共十三种形式。

colby-riley
Download Presentation

情 态 动 词 can, may, must 的用法

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter3 language 情 态 动 词 can, may, must 的用法

  2. 定义和形式： 情态动词本身有一定的情态意义,是表示说话人的情绪,态度或语气的动词,但不能单独作谓语, 只能和其他动词原形构成谓语。 情态动词有can，could, may, might, must , shall, should, will, would, ought to, need, dare, used to 共十三种形式。 1、We can be there on time tomorrow. 　　 我们明天能按时去那儿。 2、May I have your name? 　　 我能知道你的名字吗？ 记住了吗？ 特点： 情态动词一般无人称和数的变化, 情态动词后面跟的动词需用原形,否定式构成是在情态动词后面加 “not”。 We can‘t carry the heavy box. 　　 我们搬不动那箱子。

  3. can 1.We can use the computer now, but we can’tuse it two months ago. 1.We can use the computer now, but we can’tuse it two months ago. 1.We can use the computer now, but we can’tuse it two months ago. 表达“能力”。 2.You can go now. She can’t stay here. 表示“许可” 有礼貌地提出“请求”。 （用于疑问句） 3.Can you help me with my Enlish? Can I have some water? 4.He can’t （不可能） be the manager, for I saw him go to Beijing yesterday. 用否定形式 谈论“可能性” 情态动词can的用法有四种，分别是: 表示能力，请求，许可和可能性。

  4. may 1. You ______可以 go home now. may You可以take the book home. may—— 表示“允许” 2. --- _____ 可以 I watch TV this evening? ---______可以 I use you pen? --- Yes, you ______. \ No, you ______. May May can’t may 表示“请求”（用于疑问句） 注意否定回答 mustn’t No, you ______. 3.If you are not careful in the street, a car ______ hit you. A. can B. may C. would D . must B 谈论“可能性”，表示“推测” 总结情态动词may的用法： 表示请求、许可和推测。

  5. must must 1. Everybody_______必须 obey the rules. I _______必须 go now. This work _______必须 be finished as soon as possible. 表示“必要性” must must mustn’t 2.You ______不准 lend the book to others. 3.Children ______ play on the road or in the street. It is dangerous. A. may not B. mustn’t C. couldn’t D. needn’t B mustn’t 表示“（说话人）禁止……” 4.Even the top students in our class can’t work out this problem, so it ____be very difficult.(2005上海) A. may B. must C. can D. need B 进行“肯定的推测” 可能性较大译为“一定”

  6. must 5.--Must I return the book tomorrow? --Yes,_______ . \ No,__________. you must you needn’t No,__________ you don’t have to. needn’t=don’t have to 不必 表示义务或必要性 总结情态动词must的用法： 表示有把握的推测，意为“一定”

  7. 一、情态动词用法口诀： 情态动词两要点;动词原形跟后面,说话语气较委婉,can表“能力”may“许可”,must“责任”或“义务”,否定回答“needn‘t”换;should“应该",would"愿",have to "被迫"表客观. 二、注意： can表推测，意为“不可能”(主要用于否定句,疑问句) It can't be Lucy,she has gone to Beijing yesterday. must用于肯定推测,表示 “一定是” The book must belong to him because we can see his name on it .

  8. 巩固练习： 1 John___ come to see us tonight, but he isn't very sure yet. A. may B. can C. has to D. must 2 They ___ do well in the exam. A. can be able to B. be able to C. can able to D. are able to 3 -May I take this book out? -No, you___. A. can't B. may not C. needn't D. aren't 4 You___ go and see a doctor at once because you‘re got a fever(发烧). A. can B. must C. dare D. would 5 -Can you speak Japanese? -No, I____. A. mustn't B. can't C. needn't D. may not A D A B B

  9. 6 -He___ be in the classroom, I think. -No, he ___ be in the classroom. I saw him go home a minute ago. A. can; may not B. must; may not C. may; can't D. may; mustn't 7 You___ worry about your son. He will get well soon. A. needn't B. can't C. mustn't D. have to 8 --- Must I take a bus? --- No, you _____. You can walk there. A. must not B. may not C. don’t have to D. had better not to C A C

  10. See you !

More Related