Question

by the time 后面接什么时态时主句是用现在完成时？例子？

Answer 1

by the time 有两个意思:

一:by the time可以翻译为:这时候,在此时.相当于at the/that time.

By the time he had lost contact with the Party.
这时他已和党失去联系。

By the time we had settled in the third bus.
这时我们已在第3辆大汽车里坐好。

二:by the time,意为:在....之前已经....

by the time our teacher came in ,we had started speaking English.
在老师进来前,我们都已经开始讲英语了.

by the time when got to the bus station,the bus had left.
在我们到达车站时,汽车早就开走了.

by+时间名词。意为：“到…时（已发生某事），此时谓语多用完成时；最晚、不迟于…，在…之前”。如：by now/then/this time/next Friday/the end of/three o`clock等。

By the end of last year,another new gymnasium had been completed.(2003上海·春）到去年年底，又有一座新体育馆峻工了。

Answer 2

Bye the time 一般是接过去完成时
EG：Bye the time we got there ,the train had gone.

Answer 3

c
”主将从现“，主语将来时，从句现在时。
翻译过来就是”你看完这本书时，饭就凉了“。主句表示将来的意思。