题目内容
17.We will visit the history Museum if it _______ tomorrow.( )| A. | won't rain | B. | doesn't rain | C. | wasn't raining |
分析 如果明天不下雨,我们就会去历史博物馆.
解答 答案:B.if引导的条件状语从句,遵循主将从现的规则,从句主语it,故借助于does构成否定,故答案是B.
点评 if 条件句不一般,几个要点记心间;
条件句,放在前,逗号要放句中间.
条件句表可能,主句多用将来时;
条件句表事实,主句常用现在时.
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