1.引起时间状语从句的连词：
1) when 当……时：
Does it hurt when I press here?
我按这里时疼不疼?
They usually leave when the work is done.
他们通常干完活就走了。
They were having their dinner when he arrived.
她来时他们正吃晚饭。
2) while 当……时，一面……一面：
She cut her finger while she was cutting onions.
她切洋葱时把手指切破了。
We Should strike while the iron is hot.
我们要趁热打铁。
we can Iook for Maria while you eat.
你们吃着时我们可以去找玛丽亚。
3) as 在……时：
He waved as the train left the station.
火车离站时他向我们挥手。
As he talked on he got more and more excited.
他谈着时越来越兴奋。
They looked up as she walked toword them.
她向他走去时他们抬起头来。
4) before 在……之前，不等……就：
I said good bye before I left.
我离开前先道别。
Take the medicine before you go to bed.
睡觉前把这药吃掉。
He ran off before I could stop him.
我还来不及阻止他他就跑掉了。
5) since 从……后，从……以来：
She has been an artist since she was five.
她从五岁起就擅长画画了。
She has had a baby since she got married.
她结婚后生了一个孩子。
It's just a week since we came here.
我们到这里才一个星期。
6) until (till)直到，到……才：
I stayed with her until she died.
我陪着她直到她死去。
Don't leave till l get back.
在我回来以前你不要走。
7) as soon as 一……就：
As soon as you finish the job let me know.
你活一干完就通知我。
As soon as he got well, he went back to work.
他病一好就回去上班。
8) once 一旦……就：
It won't be difficult once yon have got used to it.
你一旦习惯了就不难了。
he said that, I knew he was lying.
他一说这话我就知道他在说谎了。
