This purse is made of a leather 语病在哪
问题描述：
This purse is made of a leather 语病在哪
答
This purse is made of leather.
be made of :由...组成（可以看出原材料）
be made from:由...组成（不可以看出原材料）
Leather 是不可数名词,所以前面不用a.