2 . 你谈了那么多伦敦的事情，你一定去过那儿。(must)
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4 . 选词填空
1. He ____________(must/might) get here in time,   but I can’t be sure.
2. —How long ____________(may/must) I keep this book?
—You may keep it for two weeks.
3. He ____________ (can’t/mustn’t) have missed the train;   he arrived at the train station two hours early.
4. John, look at the time. ____________ (Must/Can) you play the piano at such a late hour?
5. She ____________(might/must) have achieved greater progress,   if you had given her more chances.
6. —That must be a mistake.
—No, it ____________ (can’t/mustn’t) be a mistake.
7. Paul did a great job in the speech contest. He ____________(must/can)have practised many times last week.
8. It is usually warm in my hometown in March, but it ____________(may/can)be rather cold sometimes.
9. I can make a lantern now,   but I ____________(can’t/couldn’t)when I was young.
10. —Can we go out and play football now?   
—No,   you ____________(can’t/mightn’t).

6 . Tom didn’t respond to any of my calls. Something ____________________________ to him.  
汤姆没接我的电话。他一定是出什么事了。

9 . He must have thought I was joking. （英译汉）
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10 . 现在回想起来，我意识到这整个事情一定是我幻想出来的。(doing 作状语)(汉译英)