4. If it ________ tomorrow, we’ll go roller-skati

If it ________ tomorrow, we’ll go roller-skating.~

答案应该选择 C. doesn't rain
因为以 If 引导的条件从句，主句是一般将来时，从句要用一般现在时。rain 在这里作动词，不可以用形容词 rainy， 一般现在时态中，主语为第三人称单数， 谓语动词为行为动词时候的否定式要借助 doesn't。所以答案选择 C。

B 试题分析：句意：如果明天不下雨，我们就去动物园，if,如果，引导条件状语从句。为了区别主从句的动作先后，先发生的用一般现在时表示将来，后发生的用将来时态，即主将从先。该句中rain 是动词，主语是第三人称单数，故否定形式借助doesn’t。故选B。

4. If it ________ tomorrow, we’ll go roller-skating.
A. isn’t rain
B. won’t rain
C. doesn’t rain
D. doesn’t fine
答案选c
因为以 If 引导的条件从句，主句是一般将来时，从句要用一般现在时。rain 在这里作动词，不可以用形容词 rainy， 一般现在时态中，主语为第三人称单数， 谓语动词为行为动词时候的否定式要借助 doesn't。所以答案选择 C。

根据题意选择C
此题考查知识点
if引导的条件状语从句
主句一般将来，
从句用一般现在表将来

答案：C

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