she is my good friend 为什么不要加冠词 “a” fridend 不是可数名词么?不懂

she is my good friend 为什么不要加冠词 “a” fridend 不是可数名词么?不懂 a thief is a danger to society ?society 不是可数名词吗 为什么没冠词修饰? Here is part of his talk.为什么这里的part前面不加a?part不是可数名词么? he is making dessert 为什么不加A ,dessert不是可数名词 My friend is quiet.She is a good ____(listen). 英语：television是可数名词为什么前面不加冠词? 可数名词前面一定要加冠词或a,an she is my good friend.同义句 Kate Green is a girl. She is my good friend (朋友). She is Eng means不是复数名词吗 为什么可以前面加冠词a a means of 抽象名词前面不是不加冠词么?the sense of belonging前面为什么加冠词t Jim,_______is Lucy.She is my good friend.A.she is B.they are