题目内容
4.-We'll go to the supermarket if it .-Really?The thing is,who knows when it ?( )
| A. | doesn't rain,will stop raining | B. | is rain,stops raining | ||
| C. | don't rainy,won't rain | D. | won't rain,stops to rain |
分析 ---如果不下雨我们就会去超市.
---真的?问题是,谁知道什么时候会停止下雨.
解答 答案:A.if引导的条件状语从句,遵循主将从现的规则,主语it故借助于does构成否定,when引导的宾语从句,主句是一般现在时,从句时态不受限制,表达的是将来的动作,故用一般将来时will+动词原形,故选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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