It is (about/high) time + 1.that shoud do.2.did .

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Itis(about/high)time+1.thatshouddo.2.did.Itis(about/high)time+1.thatshouddo.2.did.Itis(about/high)ti

It is (about/high) time + 1.that shoud do.2.did .
It is (about/high) time + 1.that shoud do.2.did .

It is (about/high) time + 1.that shoud do.2.did .
就表示：该做什么了, 是做什么的时候了
只是要用动词的过去式而已

意思是：该做什么了；到什么时间了

1,2的意思都是该做什么事的时候了