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isn'thightimeresponsibly,withournation'sfutureinmind?welivedweshouldlive答案给的过去式.不过过去式和should应该都可以引导虚拟语气,为什么选择过去式?有什么区别么?

题目详情
isn't high time _ responsibly,with our nation's future in mind?
we lived
we should live
答案给的过去式.不过过去式和should应该都可以引导虚拟语气,为什么选择过去式?有什么区别么?



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答案和解析
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.It is time that the children went to bed.It is high time that the children should go to bed.it's high time that ...