牛津譯林版英語高一下冊module 4《unit 2 sporting events》之三-文庫吧
2024-10-28 23:54 本頁面
【正文】 so you ought to support her． ? Ought he to go? Yes, I think he ought (to) . have to/must obligation must與 have to都可以表示“必須”的意思，但要注意以下兩點區(qū)別。 1) must只有現(xiàn)在時，而 have to有現(xiàn)在時、過去時和將來時。如： We must work hard, or we’ll fail in the examination． Two years ago, the poor girl had to leave school for lack of money． 2) must表示主觀看法， have to則側(cè)重于客觀需要。如： We must be strict with ourselves in everything． In cities with many cars, some people have to wear masks． obligation have to/must She might win a medal at the Olympics. She may be at home now. She could read and write at the age of 4. She should e to join us. She ought to/will/must help me whenever I am in trouble. certainty might/may/could/should/ought to/will/must very uncertainty almost certainty can / could / may / might could比 can 更委婉， might比 may 更委婉 ? Can I watch the Olympics ? ? Yes, you can. No, you can’t. ? May I watch TV after finishing my homework? ? Yes, you may. / No, you mustn’t. / No, you may not. / No, you’d better not. permission informal / spoken formal / written ? Will/Can/Could/Would you help me with my training? ? Yes, I will/can/can/will. will/can/could/would make requ
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