题目内容
17．If it ______ rain tomorrow，we'll go hiking．（ ）| A． | won't | B． | doesn't | C． | don't | D． | didn't |
分析 如果明天不下雨，我们将去远足．
解答 答案：B．根据主句"we'll go hiking"用的是一般将来时，if引导的条件状语从句要用一般现在时来表将来，if引导的条件状语从句中主语是第三人称单数形式，故选B．
点评 本题考查一般现在时，在含有if引导的条件状语从句的复合句中，如果主句是一般将来时，if引导的条件状语从句要用一般现在时来表将来，还要注意条件状语从句中主语与谓语动词在人称和数上保持一致．
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