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

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.