the girl (with) glasses,the girl (wearing) glasses,the girl

wearing是分词做定语,the girl (wearing) glasses意思：戴眼镜的女孩；这是个名词性的短语.wears是动词the girl (wears) glasses这是个句子,意思：这个女孩戴着眼镜.就是语法吧,没什么为什么的.