英语句式时态分析?It is (about/high)time that + 从句（过去式）/should do.为何+

英语句式时态分析?It is (about/high)time that + 从句（过去式）/should do.为何+ It is（high）time that加从句,从句只能用过去式么?还是可以用should+do it is high time that 从句中用过去式和用should+V.有什么区别 it is high time that +should do 与it is high time that +did的区 It is high time that sb.should do It is high time that .后面加过去式 还是should加原型? It is high time that sb.should do sth.中的should可省略吗 It is high time that we should do有这种用法吗 这It is high time that we should do有这种用法吗 It is time that+从句时,从句动词什么时候用过去时 什么时候用should do? It is (about/high) time + 1.that shoud do.2.did . It is high time that something was done about it.