I don’t know when he______ tomorrow .When he_____ , I’ll let you know.
A.comes ;comesB.will come ; comes
C.comes ; will come D.came; will come
B

試題分析:句意:我不知道他明天什么時(shí)候回來。當(dāng)他回來的時(shí)候,我將讓你知道。分析第一個(gè)句子體現(xiàn)賓語從句,賓語從句的特點(diǎn)是如果主句是一般現(xiàn)在時(shí),從句用原來的時(shí)態(tài),明天體現(xiàn)為將來時(shí);第二個(gè)句子為when引導(dǎo)的時(shí)間狀語從句,體現(xiàn)為主將從現(xiàn)的原則,從句的主語是第三人稱單數(shù),因此用comes.故選B
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