为什么羊的复数不加s

sheep的意思是“羊,绵羊”,是可数名词，单复数同形。

sheep：n.羊;绵羊

相关介绍

例句：

The island is populated largely by sheep.

这个岛的主要生物是绵羊。

The minister preached a sermon on the parable of the lost sheep.

牧师讲道时用了亡羊的比喻。

The first task was to fence the wood to exclude sheep

第一项任务就是把树林围起来不让羊进去。

I'd kinda like to have a sheep farm in New Mexico

我有点儿想在新墨西哥州开一个牧羊场。