at three times和for three times一样吗I heard the door knocked at three times.这句中可以用for three times替代吗

分类: 作业答案 • 2021-12-19 11:43:02

问题描述：

at three times和for three times一样吗
I heard the door knocked at three times.这句中可以用for three times替代吗

答

knocked at 是个短语knocked at the door
不是at three times这样搭配的
three times就表示三次的意思.