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课件网) Revision of modal verbs Can you can a can as a canner can can a can 你能够像罐头工人一样装罐头吗？ If two witches would watch two watches, which witch would watch which watch 如果两个女巫观看两只手表,哪个个女巫会看哪只手表 Make a list of modal verbs can/could may/might must should would Features of modal verbs 1） 情态动词不能单独作谓语，必须与be或者实义动词连用。除 ought 和 have 外，后面只能接不带 to 的不定式。 2） 情态动词没有人称，数的变化，即情态动词第三人称单数不加-s。 3） 情态动词没有非谓语形式，即没有不定式，分词等形式。 4） 情态动词只表示期待或估计某事的发生，不能表示正在发生或已经发生的事情。 ① I can bake cookies. ② Can/could I lend your mobile phone He is honest, can he tell a lie He can’t tell a lie. ④ Accidents can/could happen on such rainy days. 能力 请求或允许 推测 推测 The use of can/could can/could的用法 表示能力 表示请求或允许 表示推测，常用于否定句 或者疑问句中，“不可能”; 用于肯定句中表示理论上 的可能性，“可能，有时会” 1、The police still haven’t found the lost child, but they’re doing what they____.(2011四川) A. can B. may C. must D. should 2、--Why are your eyes so red You_____ have slept well last night. --Yeah, I stayed up late writing a report. (2013四川) A. can’t B. mustn’t C. needn’t D. won’t ① May I take the snacks into the campus ②Judging from his accent, the man might/may be a local. 请求或许可 推测 The use of may/might 1、—_____I take the book out —I'm afraid not. （2010四川） A. Will B. May C. Must D. Need 2、 —What are you doing this Saturday —I’m not sure. but I_____ go to the Rolling Stones concert （2013重庆卷） A. must B. would C. should D. might may/might的用法 表示请求或许可 表示推测，“可能” ①Time’s up, we must go now. ②You mustn’t park here. ③Must you play erhu at night ④You’re good friends, you must know Mary’s hobbies. 必要性 禁止 非要，偏要 推测 The use of must must的用法 表示“必须”，强调主观性。否定式为mustn’t, “禁止” 表示主语固执，“偏要，非要” 表示肯定推测，否定式为can’t 1、I have told you the truth. ____ I keep repeating it A. Must B. Can C. May D. Will 2、 -____you interrupt now Can’t you see I’m on the phone -Sorry Sir, but it’s urgent. A. Can B. Should C. Must D. Would ①We should obey the traffic rules. ②It is strange that such a lazy boy should pass the exam ③If the wound should become inflamed, don’t hesitate to call me. ④“Hi, Mum! I’m on the bus, I should be home in about ten minutes.” 责任或义务 惊讶 假如，万一 推测 The use of should 1、—I don’t care what people think . —Well , you _____. （2009四川） A. could B. would C. should D. might 2、 It was sad to me that they, so poor themselves,___bring me food. （2014江苏卷） A. might B. would C. should D. could 万一你有麻烦，记得向警察求助。 If you should be in trouble,remember to turn to the police for help. ——— Should you be in trouble --When can I come for the photos I need them tomorrow afternoon --They should be ready by 12:00 ... ...
