可数名词有单数和复数之分。

Countable nouns have singular and plural forms.

youdao

冠词的使用不当也可以引起单数和复数的混淆。

Incorrect use of articles can also lead to confusion relating to singular vs plural senses.

youdao

这样允许用户添加一个插件来以他们的语言处理单数和复数。

This allows users to add a plug-in which can singularize and pluralize names in their own language.

youdao