should-had-better-ought-toPPT課件

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) 疑問句疑問句: had you better do sth.?Had you better leave here now?(4) 反意疑問句反意疑問句: Youd bet

2、ter not leave here now, had you?Youd better leave here now, hadnt you?2021/7/2432. 情態(tài)動(dòng)詞情態(tài)動(dòng)詞ought to 與與should 的用法的用法ought to 表示表示“按理應(yīng)該按理應(yīng)該”，側(cè)重反映，側(cè)重反映客觀的情況，表義務(wù)?？陀^的情況，表義務(wù)。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 表示推測(cè)，暗含較大的可能心，語氣比表示推測(cè)，暗含較大的可能心，語氣比must弱，有弱，有“按道理應(yīng)該按道理應(yīng)該”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- 應(yīng)該做某事 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. 表示說話人的主觀看法 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)表示對(duì)過去某事的看法 - “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. 表示某事很可能發(fā)生,表示推測(cè) - 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 等動(dòng)詞后的從句中 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、表示驚訝、表示驚訝, 翻譯為竟然翻譯為竟然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，萬一如果，萬一 If you should see Tom this evening, can you tell him to phone me? =( If you see Tom this