Much as I like it, I wont buy.
Try as he would, he couldnt lift the heavy box.
时间状语从句
as、when、while
as表示当的时候,往往和when/while通用,但它着重强调主句与从句的动作或事情同时或几乎同时发生。
She came up as I was cooking.
The runners started as the gun went off.
when:既可以表示在某一点的时候,又可表示在某一段时间内,主句与从句的动作或事情可以同时发生也可以先后发生。
It was raining when we arrived.
When we were at school, we went to the library every day.
while意思是当的时候或在某一段时间里。主句中的动作或事情在从句中的动作或事情的进展过程中发生,从句中的动词一般要用延续性动词。在when表示a period of time时,两者可以互换。
Please dont talk so loud while others are working.
He fell asleep while/when reading. Strike while the iron is hot.
引导时间状语从句的连接词除上述外还有:
①till、notuntil、until、before、since
Dont get off the bus until it has stopped.
He waited for his father untilit was twelve oclock.
It will be five years before he returns from England.
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