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In my opinion, we can improve our oral E...

In my opinion, we can improve our oral English ____we practice talking with others more often.

A.unless    B.if

C.until    D.though

 

B 【解析】 试题分析:unless 意为除非……如果不……unless是从属连词,引导条件状语从句,含有否定意义,相当于if引导的条件状语从句的否定形式,unless = if not。 If意为假如,如果。作为连词,引导条件状语从句。until直到……时为止。作连词的until用于肯定句中,表示主句的动作一直持续到从句动作发生或状态出现时为止。主句的谓语动词必须是持续动词(非瞬间动词),如live, wait , last, love, like, stay, work, continue 等。though虽然;尽管,though引导条件状语从句,放在主句前后均可,有时还可放在句中。 考点:考查连词引导的状语从句  
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