If I were a boy中,为什么要用were不用was?

题目

If I were a boy中,为什么要用were不用was?

答案

答案是：这是表示与现在相反的虚拟语气,主句用would + 动词原形,if +从句 （从句中的be动词用were,其他的动词用过去式） ,比如：if I were you ,I would wear a shirt and a tie to the party 尊重劳动,欢迎提问,