一、条件状语从句
条件状语从句是表示主句动作发生的前提或条件的从句, 一般置于句首或句末。通常由下列从属连词和短语来引导:
if(如果, 假如), unless(除非), as(so) long as(只要), suppose/supposing (that)(假设), in case(假如, 万一), on condition(that)(条件是, 只要)等。
*We’ll come over to see you on Wednesday if we have time.
如果有空, 我们星期三来看你。
*You can borrow my car as long as you promise not to drive too fast. 你可以借用我的车子只要你承诺不开太快。
*I’ll come on condition that John is invited too.
如果约翰也受到邀请, 我就来。
*Take an umbrella with you in case there is rain this afternoon. 随身带着把伞吧, 以防今天下午下雨。
*Suppose/Supposing(that) they refuse us, who else can we turn to for help? 假设他们拒绝了我们, 我们还能去找谁帮忙呢?
