英语作文网

19.6 条件状语从句

时间: 2018-01-08 10:52:00阅读:

连接词主要有 if, unless, as/so long as, on condition that 等。.
if 引导的条件句有真实条件句和非真实条件句两种。非真实条件句已在虚拟语气中阐述。

unless = if not.
Let's go out for a walk unless you are too tired.
If you are not too tied, let's go out for a walk.

典型例题
You will be late ___ you leave immediately.
A. unless B. until C. if D. or
答案A。 句意:除非你立即走,否则你就回迟到的。可转化为 If you dong leave immediately, you will be late. B、D句意不对,or表转折,句子如为 You leave immediately or you will be late.
查看更多文章...
上一篇 下一篇

猜你喜欢

推荐阅读