1.材质类名词(液体或气体的物质water,tea,beer,juice,air,smoke
固体材质paper,wood,bread)
2.总成类名词(money,housework,homework,work,food,furniture)
3.抽象类名词(love,happiness,sadness,kindness,knowledge,health,time)
4.学科类名词(math,English,Chinese,chemistry,physics,geography,history)