She had gone by the time he got back 其中的by the time 能用when 或while替换吗
She had gone by the time he got back 其中的by the time 能用when 或while替换吗
英语人气：977 ℃时间：2019-10-11 02:28:23
优质解答
可以用when替换,不能用while. 实际上这是英语中的一种固定用法,用by the time引导一个时间状语从句,表示在过去的一个动作发生之前有另一个动作已经完成了,这是在讲过去完成时态时必讲的一种用法.by the time是在... ...
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