She is a very pretty girl ,病句吗

如果更ぬ,
She is a very pretty girl
这句是对的：“她是个很漂亮的姑娘”
而
She is very pretty girl
就不对了,错误
看句意,貌似是想构成“主系表”句子,
如果是这样,则应改成She is a very pretty girl
如果是“主谓宾”结构
则应是the girl is very pretty
不能说She is very pretty girl She is very pretty
名词girl前,应有不定冠词a
再见祝好!