whenever即可引导让步状语从句,表示“无论何时”,相当于 at whatever time, no matter when等,又可以引导时间状语从句,表示“每当”“一……就”,与when用法相似,但语气更强
as soon as,一……就……,一般后面接+ 般现在时, 主句+一般时,引导时间状语从句,表过去,又可以表示将来。表过去从句当主句用一般过去时,表将来从句中用一般过去时或过去完成时。
如:
Whenever she comes, she brings a friend.她每次来都带着个朋友。
The roof leaks whenever it rains.屋顶每逢下雨就漏。
We try to help whenever possible .
只要有可能我们都尽量帮忙。
We will get your order to you as soon as possible.
我们将会把您的订货尽早送达。
As soon as I get my money I'm out of here!
我一拿到钱就走!
As soon as the opportunity presented itself,she would get another job.
一有机会,她就会另谋新职。