“too much”一般可作形容词、名词、副词，在句子中作定语、主语、状语、定语；而“much too”只能在句子中作副词或是状语。“too much”的意思是：“太多，过分”；“much too”的意思是：“太，实在太，非常”。

“too much”例句

1、Using too much water could spread the stain.用水太多可能使污迹扩散。

2、I think the problem can be got over without too much difficulty.我认为这个问题不太难解决。

3、They were making too much noise.他们的噪声太大了。

“much too”例句

1、The other one was much too expensive.另一个太贵了。

2、The clothes she wears are much too young for her.她穿的衣服显得过于年轻了。

3、He takes bends much too fast.他拐弯时车开得太快。