a.the same .... as .... :表示同一个
eg:Your watch is the same color as mine.
b.as + adj/adv as +prep/n/从句 :
eg:He is as cute as his brother.
Evangeline is as smart as beautiful.伊万杰林既聪明又漂亮.
c.so/such ... as :关系代词可以用于肯定句中。
eg:I gave him as much as he could eat.
He spoke in such easy English as everybody could understand.
d.建议你去看看这个网页,很详细的,http://wenku.baidu.com/link?url=E4dHitMHKmR087DTYnd3cR8IstglskjYtiSjIymBGXl9_pLuU_31ebt1nSWO0AI-5Fo14AxM1Bf2cihijxsnxZREYzJameDGJB_S1UwZr-O