Question

they are so little children

They are__little children __ they can't understand their parents.应填so..that 还是such..that?
我感觉2个应该都可以填的,我也知道so是副词,修饰形容词；such是形容词,修饰名词.
我的理解是so little a child=such a little child ,
在将a child变成复数children时,那么so little children =such little children了.
最后答案给出了such..that.请不要单单给出答案,我需要详细的有说服力的讲解和推理.

Answer 1

答案是such that
so 后面只能加形容词而不能加名词.
such 跟so刚好相反.此处前半句宾语的中心语是children,是一个名词,所以只能用such.
简单来说：so+adj.such +n.注意不能用这种；so +adj.+n.这个等同于so +n.是错误的.