if...not和unless怎么转换

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if...not和unless怎么转换
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if...not和unless怎么转换
if...not和unless怎么转换

if...not和unless怎么转换
You'll be late if you don't hurry.= You'll be late unless you hurry.
I can't catch the train if I don't get up early.= I can't catch the train unless I get up early.