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课件网) 情态动词讲解 表示说话人情感、态度的助动词 情态动词 can/could；may/might；will/would；shall/should； ought to； must 二. 情实共存 need, dare, can 三. 情态动词属性的短语 +do sth would rather, have to , had better, used to 表示说话人情感、态度的助动词 一. 基础用法 1.情态动词表推测 possibility 2.情态动词表许可 permission 3.情态动词表必要性 necessity 二. 特殊用法 1.would/ used to will 2.can、could / be able to can 3.may /must/ should 4.shall 注意： mustn’t can may /might 100% must will 基于逻辑 should （按理说） would may might 50% might not may not would not should not will not could not(不太可能) 0% can not 1. 情态动词表推测 possibility 1. 情态动词表推测 possibility 注意： 1.mustn’t 禁止，不能表达概率，推测 2.can 在肯定句中，不表示推测; can 在疑问句和否定句中表推测 eg. Is that person in red Jane -That can’t be Jane. She’s in hospital. 3.may&might 表推测不用疑问句中,常用 can 代替；而用于回答句（陈述句) eg. Can it be true - It may be, or may not be. 1. 情态动词表推测 possibility A B D 1. -Who____it be that is standing by your mother -It _____be my uncle, but I’m not sure. A.can; may B. must; can C.may; must D. must; should 2.That____be Doctor Wang. He is giving a speech in a conference in Shanghai. A.mustn’t B.can’t C.daren’t D. needn’t 3. -Sophia described every detail of the accident just now. - Her memory_____ be completely back, then A. shall B.might C.could D.must 1. 情态动词表推测 possibility B A 4. She _____ well refuse to speak to you, because she’s in a very bad mood. A.will B.may C.must D.can 5.It’s getting late, so we _____as well call it a day. A.might B.could C.must D.might not may (well) do sth 很有可能做某事 may not be likely to do sth 很有可能不做什么某事 may/might as well do sth 最好/不妨做某事 提问 肯定回答 否定回答 补充 Must I finish my homework Yes, you must. No, you needn’t. No, you don’t have to. Can I use your book Could you open the door Could I use your phone Yes, you can/may. Of, course. No, you can’t. Sorry, I can’t.+原因 1.could仅为委婉语气，实际时态为现在时，回答时用 can/may.不用could 2.could 核心围绕对方发生请求 May I take this book out of the reading room Yes, you can/may. No, you can’t mustn’t. 1.这里表许可用疑问句 2.表推测用于陈述句中 2.情态动词表许可 permission must can/could may /might will/ would shall /should 回答--问答语不一致 提问 肯定回答 否定回答 补充 Would/ Will you mind my smoking here Not at all. I’m afraid I do. 1.will/ would + 第二人称 请求 2.且常用would 委婉 Shall I open the door Shall he go now Of course, if you want to. Maybe not, Let’s check first. 第一/三人称 表征求意见、提出建议 2.情态动词表许可 permission must can/could may /might will/ would shall /should 回答--问答语不一致 1. -_____I take the newspaper away -No, you mustn’t. You_____read it only here. A. Must; can B.May; can C. Need; must D.Must; must 2.-____ I wash the clothes now, mom -No, you needn’t. You can do it after dinner. A.can B.May C. Must D.Could 3.- ... ...
