If I had known it earlier,I would have made preparations.问：我知道是虚拟_英语解答

If I had known it earlier,I would have made preparations.
问：我知道是虚拟语气,也知道翻译,我就问：主句I would have made preparations是什么时态,为什么要这样,有什么规律?

人气：241 ℃　时间：2020-03-27 22:23:29

解答

主句是现在完成时态,从句是过去完成时态,一般主句要晚一个时态.这是习惯使然,也就是语法约定.