Unless
结构︰Unless+子句,主要子句
说明︰此句型意为除非。unless 引导一个否定假设句,相当于 if not ,有时可以互换使用。总体上看,unless 的语气强于 if not ,而且有时较为常用,例如在最后通牒中。
Unless you change your mind (=If you dont change you mind), I wont be able to help you.
除非你改变你的想法,否则我不能帮助你。
Unless the management improves their offer, therell be a strike.
除非资方做出进一步的建议,否则将举行罢工。
I couldnt have got to the meeting on time - unless I had caught an earlier train.
我不可能及时赶到会场,除非我赶上了较找的一班火车。
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