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
问题描述：
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
答
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.
答
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.