一般语法书上说目前虚拟语气的概念是对目前事实相反
If I had the time, I would help him
但假如把它改回成真实条件句
if I have the time,I will help him
而真实条件句则表示从句动词一般用一般目前时表示以后时间
从这个角度看是否有所矛盾啊，一个是说目前一个是说以后
谢谢老师回答
语法书说的没错，也不矛盾。
目前的事实是： I dont have time, so I cant help him.
与目前事实相反的假设：If I had time, I would help him.
If从句用过去式，主句用would do, 既能够表示与目前事实相反的假设，可以表示与以后事实相反的假设。