高考英语复习 情态动词语法 (ppt).ppt

* Why _____ you always leave your dirty clothes in the bedroom? A. need B. can C. may D. must D * Must 必须 (04 上海) Children under 12 years of age in that country must be under adult supervision when in a public library. 四.情态动词基本用法 * Can/Could 用在否定句、疑问句、感叹句中常表推测、惊讶、怀疑、不相信的语气： 1）— Who can it be? — It can’t be him. He has gone to Xi’an. 2）How can you be so careless? What can he possibly mean? * (03上海) How _____ you say that you really understand the whole story if you have covered only part of the article. B. must C. need D. may A. can A * (04全国卷II) You ____ be tired — you’ve only been working for an hour. A. must not B. won’t D. may not (06全国卷I) There is no light on — They ____ at home. B. mustn’t C. needn’t D. shouldn’t C. can’t A. can’t C A * (06福建） If it weren’t for the fact that she ____ sing, I would invite her to the party. A. couldn’t B. shouldn’t D. might not (06四川） —Is Jack on duty today? —It ____ be him. It’s his turn tomorrow. A. mustn’t B. won’t D. needn’t C. can’t C. can’t * Can 在肯定句中使用表示 1)有时候的可能性: ● The World Wide Web is sometimes jokingly called the World Wide Wait because it can be slow.(05浙江). ●He can be friendly at times. * 2) 理论上的可能性,并不涉及具体某事是否真会发生,主要是说明人和事物的特征: 1.Even expert drivers can make mistakes. 2.(2003) A left-luggage office is a place where bags can be left for a short time, especially at a railway station. 3. Training by yourself in a gym can be highly dangerous. 4. Bird Flu can be dangerous. * Making choices ____ difficult, especially when there is no one to turn to for advice. A. might B. should D. must C. can C * 但是在表达具体某事实际发生的可能性时不可用can, 用may/might/could.