题目内容
13.Do you know when your mother ____________?I don't know.But if she __________,I'll tell you.( )
| A. | will come,comes | B. | will come,will come | ||
| C. | comes,will come | D. | comes,comes |
分析 你知道你妈妈什么时候来?
我不知道.如果她来了,我就会告诉你.
解答 答案:A.when引导的宾语从句,主句是一般现在时,从句时态不受限制,表达的是将来的事情用一般将来时will+动词原形,if引导的是条件状语从句,遵循主将从现的规则,从句主语she,故comes,故答案是A.
点评 主将从现是指在时间状语从句、条件状语从句和让步状语从句中,如果主句是一般将来时,从句用一般现在时替代一般将来时.
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