It is time是什么时态?
【It is (high/about) time (that)+定语从句】
It is (high/about) time (that)+定语从句,表示“(早)该做某事了”。that为关系副词,引导定语从句,修饰time,在从句中充当状语,可以省略。time在主句中作表语,可由high,about修饰。
从句中的谓语动词有两种形式:用动词的过去式(be用were);或者用should+动词原形(should不能省略)。此句型为虚拟语气句型,表示“某人(早)该做某事了”,含有该事早该去做而未做,现在去做似乎都为时已晚的意思。
例:
It is time (that) we went/should go to bed. 我们(早)该去睡觉了。
It is time (that) the article were/should be published. 发表这篇文章是适时的。
It is time (that) you did/should do cleaning. 你(早)
该去打扫卫生了。
注:当先行词为place,time,moment,season,day,reason,way等时,可使用that作为关系副词引导定语从句,在从句中作时间、地点、原因和方式状语。