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编辑人: 流年絮语

2024-11-30

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条件状语从句

连接词主要有 if, unless, as/so long as, on condition that 等。.

if 引导的条件句有真实条件句和非真实条件句两种。非真实条件句已在虚拟语气中阐述。

unless = if not.

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. ifD. 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 dong leave immediately, you will be late.B、D句意不对,or表转折,句子如为 You leave immediately or you will be late.


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