Question

【题目】—Shall we go to the park for a picnic tomorrow?

—If it rain.

A. won't B. won't be C. isn't D. doesn't

Answer 1

【答案】D

【解析】句意：-我们明天去公园野餐好吗？-如果不下雨A. won't，将不会，will not的缩写，将来时的否定形式；B. won't be，将不会是；C. isn't不是，一般现在时态；D. doesn't不，一般现在时态的否定助动词。根据语境可知，本句是if引导的条件状语从句，时态遵循“主将从现”的原则，rain行为动词，下雨，其否定形式借助助动词doesn’t。故选：D。