could的过去式

couldcan的过去分词和过去式

modal用于can的过去时;(询问是否可做某事)能，可以;(礼貌地请求别人做事)能

v.把(食品)装罐保存;让…卷铺盖走人;炒…的鱿鱼

They could not ensure a smooth transfer of political power.

他们无法保证政权的\'顺利交接。

I could come next week, or the week after.

我可能下周来，或者再下一周。

Could you go back to the beginning of the story?

你能不能回到故事的开头？

Could you spare one of your staff to help us out?

你能不能从你手下抽一个人过来帮帮我们？