What about playing basketball tomorrow? Good idea.But if it doesn't rain. 在这里怎么要用doesn't ?What about playing basketball tomorrow? Good idea.But if it doesn't rain. 请问高手们在这里怎么要用doesn't 而不用won't呢? 谢谢了
问题描述：
What about playing basketball tomorrow? Good idea.But if it doesn't rain. 在这里怎么要用doesn't ?
What about playing basketball tomorrow? Good idea.But if it doesn't rain. 请问高手们在这里怎么要用doesn't 而不用won't呢? 谢谢了
答
if it doesn't rain.这是if 引导的条件状语从句，有一条语法定律叫主将从现，即主句用将来时，条件状语从句用一般现在时。如： If you don't study hard, you will fail the exam.
答
这里是用了虚拟语气,本来应该是用未来时态,但是虚拟语气要求往前推一个时态,因此要用一般现在时.