问一下两个虚拟语气的区别 It's high time that sb.did sth.

问题描述:

问一下两个虚拟语气的区别 It's high time that sb.did sth.

It's high time that sb.should do sth.
用法有区别么?第二句的should 可以省略么?

没什么区别,一般第一个常用点,第二个的should不省略