为什么it is time后动词可以用过去式

Question

如题所述

Answer 1

虚拟语气。
即 It is (high) time that 后面的从句谓语动词要用过去式或用should加动词原形，但should不可省略。 如：
　 It is time that the children went to bed.
　 It is high time that the children should go to bed.

Answer 2

it is time that +从句,从句要用虚拟语气.有两种方式：

从句用一般过去时.如：It is time that we went to bed.

   2.从句用should+动词原形.如：It is time that we should go to bed.

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