【智能学辅导教育集团】情态动词的反义疑问句：

1．当陈述句部分有情态动词must时

（1）must表示“必须、禁止“时，反意疑问部分要用must (mustn’t) 。

You mustn’t stop your car here, must you?

You mustn’t do that again, must you?

（2）must表示“有必要”时，反意疑问句部分要用needn’t。

They must finish the work today, needn’t they?

You must see the doctor, needn’t you?

（3）当must用来表示对现在的情况进行“推测”时，反意疑问部分要根据must后面的动词采用相应的形式。 He must be good at maths, isn’t he?

（4）当must用来表示对过去的情况进行“推测”（must + have done）时：

a). 单纯表示对过去的推测, 与现在无关, 反意疑问句附加部分用过去式。

b). 表示对过去的推测且影响到现在或持续现在, 反意疑问句附加部分用现在完成式。

　   　She must have read the novel last week, didn’t she?

　　   You must have told her about it, haven’t you?

　     She must have had a very good time, didn’t she?

He must have lived here at least ten years, hasn’t he?

2. 当陈述部分含有情态动词used to时，疑问部分可用usedn’t或didn’t　

The old man used to smoke, didn’t he?或usedn’t he?

3.  当陈述部分带有情态动词ought to时，疑问部分用oughtn’t或shouldn’t

We ought to read this book, oughtn’t we?或shouldn’t we?

4.  当陈述部分含有had better时，疑问部分用had                                                                                                        

You’d better finish your homework now, hadn’t you?

5. 陈述部分有have to +v. (had to + v.)，疑问部分常用don't +主语（didn't +主语）

We have to get there at eight tomorrow, don't we?

6. 陈述部分有would rather +v.，疑问部分多用 wouldn't +主语

He would rather read it ten times than recite it, wouldn't he?

7. 带情态动词dare或need的反意疑问句，疑问部分常用 need (dare ) +主语

We need not do it again, need we ?

He dare not say so, dare you/he?

当dare, need 为实义动词时，疑问部分用助动词do + 主语。

She doesn't dare to go home alone, does she?