在They live in the country一句中，动词复数形式live与复数主语they一致。

In the sentence 'They live in the country', the plural form of the verb 'live' is in agreement with the plural subject 'they'.

《牛津词典》

非英语母语人士将英语母语人士视为没有复数形式的名词以复数形式使用(“informations”，“knowledges”，“advices”)。

Nouns that are not plural in native-speaker English are used as plurals by non-native speakers (" informations ", "knowledges", "advices").

youdao

的复数形式，而且许多人坚持它必须仍然被当作复数形式。

And many maintain that it must still be treated as a plural form.

youdao

So, Hesiod complains about them and calls them bribe swallowing basileis, crooked ones, plural; kings as in Homer.

因此,赫西奥德对他们进行控诉,称他们为"纳贿的巴赛勒斯们",复数形式的,就像荷马史诗中的"王者们"一样

耶鲁公开课 - 古希腊历史简介课程节选

There's not really plural form of verbs in Korean, so then again it's also difficult.

韩语中真地没有动词复数形式，所以这一点也比较难。

韩国人经常犯的失误 - SpeakingMax英语口语达人

Well, by definition, an aristocracy is plural not singular, so how do you make decisions in an aristocracy?

根据定义,贵族是复数形式,而不是单数形式,那贵族怎么做出抉择呢

耶鲁公开课 - 古希腊历史简介课程节选