首先,the same as 不光指数量,还指其他方面的相同.这是二者最明显的区别.
第二,用作数量之比时,much不可数,往往强调“多达”,the smae as往往指一样多.从这点上讲,the same as用法比较简单,即单纯地指一样多,但as much as的很多种用途.请见下面例句：
1)Please help yourself to as much of the meant as you want indicates whatever amount you wish.
2)however much, much as. Even though, no matter how much,
3)As much as I hate to, I must stay home tonight,
4)However much it hurts, you ought to admit you were wrong,
5)Much as Karen would love to see us, she can't get out of her prior commitment.