2016職稱英語衛(wèi)生類句型備考：
Unless ...
結(jié)構(gòu)︰Unless+子句，主要子句
說明︰此句型意為“除非…”。unless 引導(dǎo)一個否定假設(shè)句，相當(dāng)于 if ... not ...，有時(shí)可以互換使用�？傮w上看，unless 的語氣強(qiáng)于 if ... not ...，而且有時(shí)較為常用，例如在最后通牒中。
Unless you change your mind (=If you don't change you mind),I won't be able to help you.
除非你改變你的想法，否則我不能幫助你。
Unless the management improves their offer,there'll be a strike.
除非資方做出進(jìn)一步的建議，否則將舉行罷工。
I couldn't have got to the meeting on time - unless I had caught an earlier train.
我不可能及時(shí)趕到會場，除非我趕上了較找的一班火車。
