It is (such) difficult work that we can't finish it in a short time.括号部分为什么要用such 而不用 so

问题描述:

It is (such) difficult work that we can't finish it in a short time.
括号部分为什么要用such 而不用 so

其实这个句子是it is such a difficult piece of work........
如果换成so 那么句子应该是it is so difficult a piece of work........
两个单词修饰的位置是不一样的。

如果用so 那就要把work去掉,就可以,但是在这里,他的完整的应该是It is a such difficult work that we can't finish it in a short time. 但是
work是一个不可数名词,因此是这样的,如果用so,后面必须是形容词.