at three times和for three times一样吗I heard the door knocked at thre_英语解答

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

人气：183 ℃　时间：2019-10-27 00:48:15

解答

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.