高中英语条件句表达的六种热点考查方式
条件句的表达形式有：
1. if如果
You should call 119 if there's a fire.
If you think that treating a woman well means always getting her permission for things, think again. (06湖南)
2. unless如果不,除非(多数情况下与if...not用法相同,两者都引导条件状语从句,但unless比if ... not的语气要强｡
例如：
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,否则你会迟到的｡该句可转化为If you don’t leave immediately, you will be late. B､D项填入后句意不对,or表转折,若用or则句子应为： Leave immediately or you will be late. 再如：
He is sure to come unless he has some urgent business. = He is sure to come if he hasn’t any urgent business.
