She is French.和She is a French student.为什么后边这句要加冠词a呢?

She is French.和She is a French student.为什么后边这句要加冠词a呢? she is a french student中french前面为什么要加a呢? she is french 为什么不是 she is a french? is she a French student an a Swedish student? Is she a French student an a Swedish student?这句中间为什么用an连接? 英语翻译第一句:is she a french student an a swedish student第二句:she she is a French.的上一句 is a Alice student new French is she 连成两句句子 is a alice student new french is she连词成句 she is good at French .she has a large v_____ she is French不加a IS it a French car为 什么要加a Alica is learning / french.she is suae french is a useful la