itishightimethat用法是什么?

it is high time (that)........ (译为该做......的时间到了)

其中that可以省略，也就是 it is high time ...

其中it是形式主语

it is (high) time that...从句后谓语(也就是所谓的动词)，有两种形式

1 did 2 should do(should不可省略)

不过在题目中我们有时会碰到两种情况会同时出现，首选did

举个例子

It is high time that we ________ shopping.

A should go B went C go D are going

这个题的正解为B，其实A选项也是对的，而B是最优解，总之，一个题目中不能出现两个答案。首选过去时。

itishightimethat后面加什么?

it is time that +从句，从句要用虚拟语气，主要有两种形式。

1、从句用作一般过去时。例如：It is time that we went to school。我们该上学了。

2、从句用should+动词原形，例：It is high time that we should tell him the truth。是我们该告诉他真相的时候了。