二、时间状语从句
（一） when, while和as
1,when, 观察下面例句，总结其用法：
When I lived there, I used to go to the seashore on Sundays.
When the film ended, the people went back.
总结：从句表示的动作_________________________________,主句和从句的先后关系
_______________________________________________________________________。
在下列句子中，when 的含义是：_____________,做为并列连词。
We were having a meeting when someone broke in.
We were about to set off on our way when it suddenly began to rain
She was on the point of going to shop when the telephone rang..
Hardly had I arrived when the train left.
He had just finished his home work when someone asked him to play basketball.
总结：_________________________________: _____________________________
____________________________________; _______________________________
__________________________________________________________________
