He was able to go to the party yesterday evening and he enjoyed himself very much.
2. 表示惊异、怀疑、不相信的态度。(主要用在否定句、疑问句和感叹句中)
Can this be true? How can you say like that? This cannot be done by him.
3. can (could) + have + done 的疑问或否定形式表示对过去发生的行为怀疑或不肯定。
He cannot have been to that town. Can he have got the book?
二. may 和might 的用法
1. 表示许可,表示请求、允许时,might 比may 的语气更加委婉一些,否定回答时可用cant 或mustnt, 表示不可以、禁止、阻止之意。 例如:
Might I use your pen? No, you mustnt.
May I take this book out? Yes, you can ( No, you cant/ mustnt.)
用May I 征询对方许可在文体上较正式,在口气上比较客气,在日常口语中,用Can I 征询对方意见在现代口语中更为常见。
2. 用于表示祝愿的句子中。例如:
May you success! May you be happy! May you have a good journey!
3. 表示推测、可能(疑问句中不用于此意)
He may be very busy now. (此句中用might 语气较弱)
4. May (Might) + have + done 表示对过去发生的行为的推测。例如:
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