I could have passed my examination easily but I made too many stupid mistakes.
我本可以轻易通过考试,但我犯了太多不该犯的错误。
如表具体做某一件事的能力时,则须用 be able to .
He was able to translate the article without a dictionary.
他可以不用词典翻译那篇文章。
Can表示一贯的能力 ,be able to表示客观能力和通过努力可以达到的能力
I can’t swim. But I am sure I will be able to swim through more practicing.
The fire spread through the hotel, but everyone was able to get out
When the boat sank he was able to swim to the bank
3.may 的用法
1)表示请求、可以、允许。
You may drive the tractor. 你可以开那台拖拉机。
2)当回答由may 引起的问题时,否定答语要用must not,表示“不许可”、“不应该”、“不行”。
May I come in?
Yes, you may.
No,you can’t
No, you may not .
No ,you mustn’t
No ,you’d better not.
3) may /might 推测性用法 可能
He may be right.
He may not come today
(可能不)
He may /might come tomorrow.
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