If I were you,Iwould accept his apology请那位大哥能帮我回答这个问题 我万分感谢.

在当代英语中,尤其在口语中,单数主语常用was代替虚拟式were.如：
If I was you,I would go.我如是你,我就去.
I wish I was ten years younger.我但愿年轻10岁.
I shall act by her as tenderly as if I was her own mother.我将温存满怀地待她,就像她的生母一样.
在含义上,有时was发生的可能性大于were.如：
He looks as if he was ill.他像是病了.
但在正式文体中仍须用were,如须说if I were in your position（假如我处于你的地位）.又,as it were与were it not for me中的were亦不可代以was.
望楼主采纳.

虚拟语气时i后面就加were 固定用法
if i were you= were i you