请问it's high time 的用法

请问it's high time 的用法 It's high time...的用法 it's high time的用法? it is high time that的用法 It is high time that的具体用法? It's time+动词的用法急用 问一下两个虚拟语气的区别 It's high time that sb.did sth.与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? it is high time的high是什么意思 请问it's about time 的用法是怎样的?后面接do还是did sth It’s (about/high)time+that: it's high time that怎么翻译 英语：it's high time是什么意思?详细! it's high time that the fighting It’s time that用法 it is about time 用法it is about/high time 后面用动词的什么什么时态 It's time for...和It's time to 的用法和区别? it's time to和it's time for的有什么不同?it's time to和it's time for的用法有什么不同 it's high time 后面要用虚拟语气吗?请造个句子.这样的句子:it's high time for us to work together.