如果我是你用英语怎么说?

If I were you
1.一般过去时
复数用were,单数用was
2.were也可以用在虚拟语气中
3.这两个是be动词的一般过去时形式,用大致与 are is 相同,如：I was in London yesterday.Last year you were the tallest of them.
4.were和was是动词be的一般过去时
复数用were,单数用was .
注意虚拟语态时只能用were,如：If I were there,your problem would have been solved already.