when和by the time用在过去完成时有什么区别?
问题描述：
when和by the time用在过去完成时有什么区别?
答
when是一个副词而by the time是个介词短语！
when则只是表述哪个时间点的动作或状态；by the time 的意思是：等到、到…的时候、到…时候为止、到…时候，一般表示一个时间段！
关于by这个介词的用法是考试的重点哦！
答
by the time是从前面的时间开始一直到那个时间点的状态
when则只是表述那个时间点的动作或状态。
by + 过去的时间点。如：I had finished reading the novel by nine o'clock last night.
When I woke up, it had already stopped raining.
答
by the time是从前面的时间开始一直到那个时间点的状态
when则只是表述那个时间点的动作或状态.
by + 过去的时间点.如：I had finished reading the novel by nine o'clock last night.
When I woke up,it had already stopped raining.