詞組so...as 與as...as有什么區別?

　　1、as...as可以用在肯定句中，表示“像...一樣”，后面的形容詞或者副詞要用原級：

　　She can run as fast as a deer.她能跑的像鹿一樣快。

　　They work as hard as they do.他們工作像你一樣努力

　　2、在否定句中，as...as和so...as都可以用：

　　I don't go there as much as I used.我現在到那里不像過(guò)去那么多了。

　　I didn't do as (so)well as I should.我做的不如我應做的那么好。

　　3、這種句子中也可以有一個(gè)表示程度的狀語(yǔ)：

　　I don't speak half as (so) well as you.我講得不及你一半好。

　　She can read twice as fast as he does.她的閱讀速度比他快一倍。

　　注意：as后面的形容詞如作定語(yǔ)，而被定語(yǔ)修飾的名詞有不定冠詞a時(shí)，不定冠詞a須放在形容詞之后。

　　如：German is as difficult A language as English.德語(yǔ)和英語(yǔ)一樣難學(xué)。

　　這樣的詞序也適合于so...as；

　　如：I have never seen so beautiful A place as Guilin before.我過(guò)去從未去過(guò)像桂林這樣美的地方。