句子I have three pens,but I want to get more.的More既是比较级,又是替代词吗?

问题描述:

句子I have three pens,but I want to get more.的More既是比较级,又是替代词吗?

这句话是省略句 but I want to get some more pens.
当然more也可以做名词 指更多的人或物
但要说more是替代词很牵强 more替代什么呢?难道是替代more pens?那就又回到省略句里了