Must have done后的反意疑问句到底是什么？我用英国和美国语料库的实例来破解：
英国语料库：Davies, Mark. (2004-) BYU-BNC: The British National Corpus. Available online at
http://corpus.byu.edu/bnc.
1. I was just thinking I bet that Helen was pleased then cos she must have passed, mustn't she?
2. Yes. Now it must have been mustn't it, a possibility, if been there at all, that he was hiding under that bed?
3. Exactly why, he must have had some sympathy, mustn't he?.
4. …she must have passed mustn't she?
5. He must have been interested in cooking, mustn't he?
6. Yeah well I mean he must have gone in the hospital to her mustn't he?
8. You must have touched her up the wrong way. --Yeah, I must have done mustn't I?
9. Now it must have been mustn't it, a possibility, if been there at all, that he was hiding under that bed?
10. Exactly why, he must have had some sympathy, mustn't he?.
11. He must have been interested in cooking, mustn't he?
12. Yeah well I mean he must have gone in the hospital to her mustn't he?
13. Yeah, I must have done mustn't I?
14. Somebody must have reported him, though, mustn't they?
15. Abruptly she stood up and crossed to the window. "I must have done , mustn't I?"
16. You must have seen the seals, though, didn't you?
17. Exactly why, he must have had some sympathy , mustn't he ?.
18. And your sister's ten years older than you so they must 've been there ten years plus , mustn't they ?
19. They have a serious side but they must have a lighter side as well , mustn't they ?
20. It must be , mustn't it ?
21. Yeah. The profit would have been minus cos the costs would still be there so it must be a cancellation . Mustn't it ?
22. Yes, now this shows it must be his imagination , mustn't it ?
23. …they must know there is a risk , mustn't they .
24. It must mean something , mustn't it ?
25. Six pairs of knickers must be enough , mustn't it , Charlie?
26. Then it must be Madame V in Paris , mustn't it ?
27. Everybody who sees her must love her , mustn't they , Ellen?
28. But he must like her a bit , mustn't he ?
29. Saturday night. Yeah? Yeah. So he must be doing well, mustn’t he?
30. Yeah. Okay. So what, they must be staying, staying the Saturday night, mustn’t they?
31. You must have seen the seals, though, didn’t you?(用didn't的只搜到这一例)
美国语料库：
http://www.americancorpus.org/
1. You must have enjoyed those, didn't you?
2. And you must have had a name, didn't you?
3. Oh Patrick, I must have told you -- didn't I?
4. Must have seemed like an eternity, didn't it, holding your breath?
5. Must have had three kids, did she?
6. I'm sure they must be exaggerating, aren't they, Professor?
7. You must have called an undertaker by now, haven't you?
结论: 用mustn’t构成反意疑问句见于英国英语。美国英语中表示逻辑推测的must之后用反意疑问句较少见, 如果有, 也通常用did/ has/ have, 而不用mustn’t。这是因为美国英语中通常不用mustn't 这个拼法, 他们通常拼成must not。
(有些例句不属于must have done结构, 供参考)
[
本帖最后由 joham50 于 2008-6-19 14:11 编辑 ]
