I listened but couldn't hear anything.listen和hear为什么这么变
问题描述:
I listened but couldn't hear anything.listen和hear为什么这么变
答
我已经听到了,过去式,又有情态动词couldn't 原形
I listened but couldn't hear anything.listen和hear为什么这么变
我已经听到了,过去式,又有情态动词couldn't 原形