后接词词性不同
so后边可加形容词或副词，而such后要用名词。
后面所接名词修饰词不同
如果such后边的名词是由many、much、few、little等词修饰的话，则不用such，而使用so。
例句：
He is such a little boy that he can’t lift the box.
他是这么小的小小孩，提不到那个箱子。
He ran so quickly that we all couldn’t catch up with him.
他跑得很快，我们都追不上他。
All right, so that's that.
好吧!这事儿就这样了啦。
I set up the computer so that they could work from home.
我安装了电脑，这样他们就可以在家里工作了。
You have to carry a bleeper so that they can call you in at any time.
你需要随身携带传呼机，这样他们随时都可以打电话给你。
I'll give you all the facts so that you can judge for yourself.
我会告诉你所有的'事实，这样你就可以做出自己的判断。