If there were a heavy snow next Sunday,we would not go skating.这句话为什么要用were不用was?
问题描述：
If there were a heavy snow next Sunday,we would not go skating.这句话为什么要用were不用was?
was不是过去时么 我是想问a heavy snow貌似是单数 为什么不用was
答
虚拟语气吧,固定句式,我知道,所以说是固定句式么,这个were和was没什么含义的 没错是将来的