题目内容
17.I don't know if he_______________.If he_________,I will tell you.( )
| A. | will come,come | B. | comes,will come | C. | will come,came | D. | will come,comes |
分析 ---我不知道她是否会来?
---如果他来了,我就会告诉你.
解答 答案:D.第一个if引导的宾语从句,主句是一般现在时,从句时态不受限制,结合句意表达的是将来的动作,故用一般将来时,第二个if引导的条件状语从句,遵循主将从现的规则,从句主语he,故comes,故答案是D.
点评 一条件状语从句,译为"如果".He will come if you invite him.如果你请他,他会来的.
二是宾语从句,译为"是否".I wonder if she is ill.不知她是否病了.
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