We will have a picnic if it ISN'T rain tomorrow.这个句子中为什么用 isn't 而不用 doesn't 呢?讲解一用doesn't吗？能不能讲解一下啊？

分类: 作业答案 • 2021-12-19 10:50:35

问题描述：

We will have a picnic if it ISN'T rain tomorrow.这个句子中为什么用 isn't 而不用 doesn't 呢?讲解一
用doesn't吗？能不能讲解一下啊？

答

应该是dosen't~
rain在这里作动词
又it是单数,所以用doesn't