could

KK [kʊd] /kʊd/

动词

1
能、可以、会can 的过去式
When I was younger, I could run ten kilometers without stopping.
我年轻的时候可以一口气跑十公里。
2
可能、也许
Your keys could be under the sofa cushions.
你的钥匙可能在沙发垫子底下。
3
可以、能否用于客气的请求
Could you pass me the salt, please?
可以请你把盐递给我吗。
4
可以、不妨用于提出建议
We could take the train instead of driving there.
我们可以搭火车去，不用开车。
5
可以、得以表示许可
The teacher said we could leave once the test was over.
老师说考完试就可以离开。
6
本来可以、早就该could have 用于责备或惋惜
You could have told me the meeting was canceled.
你本来可以早点告诉我会议取消了。
7
真想、恨不得表示强烈感受
I'm so tired I could sleep for an entire day.
我累得恨不得睡上一整天。