为什么many too不对

   因为many是形容词，too是副词，many修饰可数名词，too修饰形容词或者副词。形容词不修饰副词。

   例如：1）I have many friends here.

2） It is too hot today.

3) The house is too old to live in.

4) The horse is running too fast to catch up with.

  too much+不可数名词too many+可数名词。much too+形容词或者副词。例如：1)There is too much work to do.2) We have too many jobs   to do.3) He is much too tired.4) Tom does everything much too carefully.