/kʊd/
（can 的过去式）能；会
past tense of can; used to indicate ability in the past
（表示可能性）可能
used to indicate possibility
（用于礼貌请求）可以；能
used for making polite requests
could do with
需要；想要
as far as I could tell
据我所知
She could swim when she was three.
她三岁的时候就会游泳了。
It could rain later.
过会儿可能会下雨。
Could you help me with this?
你能帮我一下吗？
上一个
come
下一个
work