【上期回顾】
【本期内容】
一、内容纲要
二、内容简述
(一)定义
用表示时间的连词连接一个句子,充当另一个句子的状语,这个句子就叫做时间状语从句。
常用来连接时间状语从句的连词有:when, while, as; before, after; till, until, since; 表“一...就...”的句型;every/each time, by the time。
(二)when、while与as
When he came yesterday, she told him the bad news.
When she was working in the garden, her son woke up.
While he was away from home, his neighbour took care of his garden.
While I was reading in the living room, my wife was writing her novel in the study.
While my son was sleeping, my wife came home.
As I was growing vegetables, my daughter watered them.
As the sun rose, the fog disappeared.
(三)before与after
before表“在...之前”,after表“在...之后”。如:
Before he came back, she had already left.
After she had already left, he came back.
(四)till、until与since
I will stay here till/until she comes back.
He did not go home until he had finished his work.
She has lived here since she was born.
As soon as he arrived there, he called me.
He had hardly arrived there when he called me.
He had no sooner arrived there than he called me.
The minute/second/instant/moment he had arrived there, he called me.
(六)every/each time与by the time
Every/each time he comes, he will bring me some flowers.
By the time she comes back, I will have finished the work.
By the time she came back, I had finished the work.
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