pauper的复数形式怎么写

例句：

A pauper has as much a right to learn as a king.

穷人和国王一样均有受教育的权利。

Most residents in this district are urban pauper.

在这个区居住的大部分人都是城市贫民。

He guards the sleep of his pauper master if he were a prince.

即使主人是乞丐，他也会像守护王子一样伴随着主人。