can not的过去式：could not；
例句：
She could not believe that he wished her harm.
她不能相信他希望她受到伤害。
Those who could not write signed with a cross.
不会写字的人画十字代替签名。
扩展资料
I could not work in these conditions any longer.
我再也不能在这样的环境中工作了。
He was emphatic that he could not work with her.
他强调他不能与她共事。
I could not bring myself to confront him about it.
我不能就此事让自己与他对质。
