If I were a boy与If I am a boy.的的区别,为什么I 后面可以用were?

问题描述:

If I were a boy与If I am a boy.的的区别,为什么I 后面可以用were?

前者是虚拟语气,If I were a boy是虚拟语气的条件状语从句,表示与现在事实相反,句型是:
If+主语+动词过去式(其中,如果是be动词一律用were).
后者,If I am a boy是一般条件状语从句.
仅供参考.