should-had-better-ought-toPPT课件

1、2021/7/241Modal Verbs (1) had better ought to should2021/7/2421. Had better最好做某事最好做某事(1) 肯定句肯定句: youd better do sth. Youd better leave here now. (2) 否定句否定句: youd better not do sth.Youd better not leave here now.(3) 疑问句疑问句: had you better do sth.?Had you better leave here now?(4) 反意疑问句反意疑问句: Youd bet

2、ter not leave here now, had you?Youd better leave here now, hadnt you?2021/7/2432. 情态动词情态动词ought to 与与should 的用法的用法ought to 表示表示“按理应该按理应该”，侧重反映，侧重反映客观的情况，表义务。客观的情况，表义务。We ought to help our parents do some housework.They ought to obey the traffic rules.He ought not to drive. He has just taken some me

3、dicine for his cold.ought to 表示推测，暗含较大的可能心，语气比表示推测，暗含较大的可能心，语气比must弱，有弱，有“按道理应该按道理应该”之意之意 He ought to be tired now.2021/7/244Study the example: Tom has just come back from the cinema:Ann: Hello, Tom. Did you enjoy the film?Tom: Yes, it was great. You should go and see it.A- 应该做某事 The government shou

4、ld do something about the economy.- “Should we invite Sue to the party?”- “Yes, I think we should.”2021/7/245B. 表示说话人的主观看法 The price on this label is wrong. It says $65 but it should be $50. Those children shouldnt be playing. They should be at school.C. should have (done)表示对过去某事的看法 - “Hello, Ann. T

5、he party last night was great. You should have come. Why didnt you?” Im feeling sick. I shouldnt have eaten so much chocolate.2021/7/246D. 表示某事很可能发生,表示推测 - Do you think youll be late home tonight? - I dont think so. I should be home at the usual time. She is studying very hard, so she should pass he

6、r examination. = , so she ought to pass her examination.2021/7/247E. 用于suggest / advise / order /desire 等动词后的从句中 They insisted that we should have dinner with them. She demanded that I should apologize to her.His suggestion is that we should go out.2021/7/248F、表示惊讶、表示惊讶, 翻译为竟然翻译为竟然I didnt tell you about that, but how should you know it.You cant imagine that a well-behaved man should be so rude to a woman.2021/7/249G. If should 如果，万一如果，万一 If you should see Tom this evening, can you tell him to phone me? =( If you see Tom this