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【题目】I don’t know if she tomorrow. If she ,let me know.

A.comescomes B.will comecomes

C.comeswill come D.will comewill come

【答案】B

【解析】

试题分析:句意:我不知道她明天是否回来。 如果来,让我知道。If连词,有两种用法:一、引导宾语从句,意思是“是否”,当主句是一般现在时态时,从句为你所需要的任意时态;二、引导条件状语从句,意思是“如果”,时态遵循“主将从现”的原则。所以选B。

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