英语虚拟将来时,条件句中+一般过去时,那是was还是were？

If I were you
If I were a bird
用were的多

看情况而定
If I were you , I would not eat that.
我是你的话我就不吃了。
在此情况下 我不可能是你 机会极小 故用过去式
If I kill you , I must be sentenced.
我杀了你便会被定罪。
我杀了你是一定有罪的 故此一定会被定罪的
I 不会用was you。

虚拟中一般都用were来代替was