Question

were to do 与should be的区别 虚拟语气中

were to do 与should be的区别
在虚拟语气中

Answer 1

were to do/should do用于对将来时态的虚拟，都可以用，都是虚拟，意思上略有差别，should多用于“万一、竟然”这个意思
If he were to come, what would you do?如果他来，你怎么办？
If it should rain, take an ambrella.万一下雨，带把伞

Answer 2

were to do和should do都可用在表示对将来情况的虚拟，做填空的时候要数好横线，三条线填were to do，两条线填should do。此外should do 还可以用在其他的虚拟语气句式里，比如说suggest +that从句，insist+that从句，等等。

Answer 3

其实感觉差别不大，be to本来也就是代表将来的用法嘛！了不起可以把它理解为将来时间比较靠近现在吧！