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：
I'll give you a key so that you can let yourself in.
我把钥匙给你，你可以自己开门进去。
Her parents made sacrifices so that she could have a good education.
为了让她受良好的教育，她的父母作了很多牺牲。
It is with such facts that a scientific investigation must begin.
科学研究正是从这些事实入手的。
He left in such haste that he had no time to say goodbye to his friends.
他匆促启程，未及向朋友告别。