so...as 一般用于否定句,as...as 一般用于肯定句,(肯定否定都能用) so...as不可用于肯定句.as...as与so...as均可表示"与……一样",as...as...的用法:两个as中间可以加形容词或者副词,由它要修饰的内容决定. 它们的用法有异同之处: 肯定句用as...as,不用so...as;否定句两者均可使用.例如: I didn't go as /so far as you.我走得不像你那么远. They walked as far as the station.他们步行到了车站. 误:They walked so far as the station.
