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M5U3 Language in use课件
Read the list of rules and write sentences. Good practice: Use a locker to store your clothes. Wear loose, comfortable clothing. Wearing jewellery can cause accidents. Talking on a mobile phone while climbing can be dangerous. Read the list of rules and write sentences. 3. must, have to ①表示命令、禁止、不得不。如: You must come in time. 在回答引出的问句时, 如果是否定的, 不能用mustn’t (禁止, 不准),而用needn’t, don’t have to (不必)。 —Must we hand in our exercise books today? —Yes, you must. —No, you don’t have to / you needn’t. 4. shall, should ①shall 用于第一人称,征求对方的意见。 如:What shall we do this evening? ②shall 用于第二、三人称,表示说话人 给对方的命令、警告、允诺或威胁。 You shall fail if you don’t work hard. (警告) He shall have the book when I finish it. (允诺) He shall be punished. (威胁) 5. will, would ①表示请求、建议等,would更委婉。如: Will / Would you pass me the ball, please? ②表示意志、愿望和决心。 如: I will never do that again. They asked him if he would go abroad. ②表示劝告、建议和命令。should, ought to可通用,但在疑问句中常用should。 You should / ought to go to class right away. Should I open the window? ③表示推测 should, ought to (客观推测), must (主观 推测)。 He must be home by now. (断定他已到家) He ought to/should be home by now. (不太肯定) This is where the oil must be. (直爽) This is where the oil ought to/should be. (含蓄) 情态动词练习 1. 你必须马上回家。 You must go home now. 2. 他一定吃过什么东西了。 He must have eaten something. 3. 吃饭之前不能吃零食。 You mustn’t eat snacks before meals. 4. 我可以问你的名字吗? May I ask your name? 5. 你能用英语说吗? Can you speak in English? 6. 我们应该准时去上学。 We should go to school on time. 7. 你没有必要那么做。 You needn’t do that. Match the signs and the rules. 1. No smoking allowed inside the building. 2. All visitors have to report to reception. 3. Smoking is allowed outside the building. 4. It’s best to bring a bottle of water on the trip. C F B E 5. Never go mountain climbing in bad weather. 6. Be careful of children crossing the road. 7. It’s
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