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You ______ anything here ______ you are ...

You ______ anything here ______ you are told to.

A. can’t touch; after    B. can’t touch; unless    C. won’t touch, if

 

B 【解析】句意:除非你被告知,否则你不能触摸任何东西。if 与 unless都可以引导条件状语从句,unless=if not意思是“除非,如果不”。结合句意可知,答案为B。 点睛:unless引导条件状语从句,相当于if条件状语从句的否定形式,即unless = if …not。中文意为“如果不……,除非”。unless引导的条件状语从句和if条件状语从句一样,当主句是一般将来时态时,从句用一般现在时态代替一般将来时态。即所谓的“主将从现”。如: We will go to the park unless it rains tomorrow.= We will go to the park if it doesn’t rain tomorrow.  
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