as引导时间状语从句的用法

as 引导时间状语从句,表示:一边..一边, 随着,强调主从句动作同时进行

而其它选项不正确

介词,不接从句。本题是一个句子。The day went on

引导时间状语从句,但意思是:自从,

引导时间状语从句,但意思是:当.. 时

语法:

1)as, when 引导短暂性动作的动词。

Just as / Just when / When I stopped my car, a man came up to me.

2)当从句的动作发生于主句动作之前,只能用when 引导这个从句,不可用as 或 while。

When you have finished your work, you may have a rest.

3)从句表示”随时间推移”连词能用as,不用when 或while。

As the day went on, the weather got worse. 日子一天天过去,天气越变越坏。

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