as much as 的用法

as much as possible和speak as much English as you can都是对的.其实没有必要抠住这样的语法不放,你记住这些句子就是最好的办法.不过我倒是可以分析一下其中的语法.
开始我想问你为什么不对as much as possible这样的句子产生疑问呢,归根结底就是先入为主,接受了as much as possible之后就很难接受speak as much as possible了.
其实是这样的：
as much as possible的前一个as是副词,意思是“象...一样”,后一个是连词引导的“从句”,不过是省略了主语和谓语的.可以还原这个句子为：
as much as (it is) possible,
speak as much English as you can的前一个as是介词,意思是“与...相同”,用作比较.后一个as跟上面的第二个as一样,也是连词引导从句.直译就是“尽可能说你能够说的,跟最多的英语相同”.
不过我觉得如果你不研究语言学,或者对语言学感兴趣,没有必要这样去学英语.即使是要研究语言,没到一定程度,就是要记住句子就好了.如果记住的句子多了,记牢了,看到的时候自然也就不会有觉得奇怪的想法产生了.