高手来了
it is high time that ——
"it is past the time when something should have happened or been done
早该是…的时候了"
例句：it is high time that she faced facts.
早该是她面对事实的时候了.
It’s high time that this room was properly cleaned!
这个房间该好好打扫一下了!
虚拟语气,过去式那答案不就是再次查阅英文资料库coca,实际使用的用法分两种：原型或过去式。我认为，用过去式或should have done表示这个东西早该做了。而使用原型则表示正该做，正是好时候。