could
US /kʊd/
UK /kʊd/
情态动词
1.
能, 可以
used to indicate possibility or ability in the past
示例:
•
She could run very fast when she was younger.
她年轻时能跑得很快。
•
I could hear the music from my room.
我能从我的房间听到音乐。
2.
可能, 可以
used to express possibility or uncertainty
示例:
•
It could rain later today.
今天晚些时候可能会下雨。
•
That could be true.
那可能是真的。
3.
能, 可以
used to make a polite request or suggestion
示例:
•
Could you please pass the salt?
能请你把盐递给我吗？
•
We could go for a walk later.
我们晚些时候可以去散步。