by the time是到…时候为止，表示等到……的时候。这个时态也要看说的是什么,常用过去式。
by the end of是到…为止，……致死的原因。后面常接名词或从句,时态要看情景来决定的。
一、by the time
英 [bai ðə taim] 美 [baɪ ði taɪm]
等到;到…时候为止;比及
例句：
1.By the time ambulancemen arrived he was unconscious.
救护人员到达时他已...
By the time
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 end o...
By the time
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 end ...
By the time
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 end o...
标签：time
