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用by the time造句简单
By the time she knew the news ,John had flown to America.
By the time I got up,she had gone away.
很简单，by the time 接过去式，后用过去完成时。
英语老师进教室打招呼
到英语老师进教室的时候，所有学生都已经到齐了
by the time the English teacher came into the classroom, all the students were already here.
by the time例句
by the time意为“到……时候(为止)”，是一个介词短语，在句中经常起连词作用，引导时间状语从句。
by the time的用法
1、到…时候为止
表示到...为止,一般要求主句用过去完成时.
例句：
He had left by the time we reached home.
当我们到家的时候他已经走了.
The movie had begun by the time we got there.
当我们到那儿的时候,电影已经开始了.
2、到……的时候
(1)可以表示将来的时间. 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.
I will have finished the work by the time my father comes back.
(2)可以表示过去的时间. 主句用过去完成时,而从句用一般过去时.
He had built a lab for himself by the time he was 12 years old.
注：如果只是说过去某个时候的状况，用过去时，而不用完成时。
例句： By the time the war was over , death and suffering were to be seen everywhere.
在战争结束的时候，到处可见死亡和饥饿。
这里没有“死亡和饥饿”已经完成的意思，只是描述当时这个时间点的状况。所以用过去时。
用by the time造句
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 he is ten, he has outgrown his older brother.
他十岁的时候就已经长得比他哥哥高了。
3. The injured man was fairly far gone by the time the ambulance arrived.
救护车到时那伤者已生命垂危.
4. By the time the bus came so many people were waiting that it was a free fight to get on it.
公共汽车来的时候，等车的人很多，成了一场挤车的混战。
5. I shall be pushing up daisies by the time the project is finished.
等到这项目完成时, 我早已入土了.
6. I corrected my watch by the time signal.
我按报时信号校正我的表。
7. By the time the ambulance had arrived, a crowd of onlookers had gathered.
救护车赶到时, 围观的人已经很多了.
8. He was quite puffed by the time he reached the top.
他登上顶端时气喘得很厉害.
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