题目内容
5．“We'll have a picnic if it________tomorrow．”“Have a nice day．”（ ）| A． | won'train | B． | will rain | C． | doesn't rain |
分析 翻译：“如果明天不下雨，我们将会去野餐．”“祝你过得愉快．”
解答 答案：C．本句中if 引导的是一个条件状语从句，在条件状语从句中常使用一般现在时，而主句中用一般将来时，这样可以排除A和B；且从句中主语it 是第三人称单数形式，再根据下雨是动词，否定用助动词do，但是主语是单数，应该是doesn’t rain．故选C．
点评 本题考查的是if 引导的条件状语从句，在if 引导的条件状语从句中，如果主句为一般将来时，从句用一般现在时，来代替将来时．
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