【错误表达】

If I was you, I would go to the company by bus.

如果我是你，我就做汽车去公司。

【讲解辨析】

这个句子是一个非真实条件虚拟句。表示与现在的事实相反，由if引导的从句中的谓语动词be必须要用were. 这个句子用的是was。

【正确表达】

If I were you, I would go to the company by bus.

【举一反三】

If I were you, I would knock him down.

如果我是你，我就把他撞到。