求大师详解:by that time,by then,by the time都有“到时候”的意思,具体含义和语法上该怎么分辨呢?

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求大师详解:by that time,by then,by the time都有“到时候”的意思,具体含义和语法上该怎么分辨呢?

求大师详解:by that time,by then,by the time都有“到时候”的意思,具体含义和语法上该怎么分辨呢?
求大师详解:by that time,by then,by the time都有“到时候”的意思,具体含义和语法上该怎么分辨呢?

求大师详解:by that time,by then,by the time都有“到时候”的意思,具体含义和语法上该怎么分辨呢?
by that time = by then 用于表示在过去的“到时候”.
by the time表示“(将来的)到时候”.

by that time = by then= by the time
用于表示到过去的那个时候为止,都是过去完成时的时间状语。
而by the time还表示“(将来的)某个时刻”。是将来完成时的时间状语
如 We had learned 3000 English words (by the time he came here)(by then)
We will ...

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by that time = by then= by the time
用于表示到过去的那个时候为止,都是过去完成时的时间状语。
而by the time还表示“(将来的)某个时刻”。是将来完成时的时间状语
如 We had learned 3000 English words (by the time he came here)(by then)
We will have finished the work be the time he comes back

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