by the time 的时态怎么用by the time 主句从句分别用什么时态 给几个例句

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by the time 的时态怎么用by the time 主句从句分别用什么时态 给几个例句
by the time 的时态怎么用
by the time 主句从句分别用什么时态 给几个例句

by the time 的时态怎么用by the time 主句从句分别用什么时态 给几个例句
1.表示将来的时间.
主句用将来完成时,而从句用一般现在时来表示将来的动作.
如:I will have finishied the work by the time my father comes back.
2.表示过去的时间.
主句用过去完成时,而从句用一般过去时.
如:He had built a lab for himself by the time he was 12 years old.

by the time到…的时候
1. By the time we arrived the meeting was over.
我们到达时,会议已结束了。
2. By the time I entered high school.
在我读高中之前。
3. It can stand the proof by the time.
它能经受时间的考验.