too much一般和to搭配，构成“太多...以至于不能...”的特殊含义；而so much一般和that连用，构成“太多...以至于...”too much一般是相对独立的，与上文没有太大的关联；而so much与上文的联系十分紧密，不可分割。

too much的例句

I've got far too much to do.

我要做的事情太多了。

Using too much water could spread the stain.

用水太多可能使污迹扩散。

I think the problem can be got over without too much difficulty.

我认为这个问题不太难解决。

Don't read too much into what she says.

不要在她的话里加进太多自己的理解。

Don't use too much of it ─ it cost a lot of money.

这东西很贵，不要用得太多。

so much的例句

You'll get fat if you eat so much chocolate.

你如果吃这么多巧克力就会发胖的。

Rarely has a debate attracted so much media attention.

难得有一场辩论吸引这么多的媒体关注。

We have so much to do.

我们有很多事要做。

Try not to make so much noise.

别那么吵吵闹闹的。

I told the boys off for making so much noise.

孩子们太吵，我把他们训斥了一顿。