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条件状语从句 连接词主要有： 如果if、 除非, 如果不unless、只要as/so long as,、如果 on condition that 等。. unless = if not考试重点. 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 don't leave immediately, or you will be late. B、D句意不对，or表转折. (责任编辑：admin) |