A person is a human man, woman, or child.

一位 person 是一個男人、女人或小孩

It is a singular countable noun.

它是單數的可數名詞

There was one person at the door.

門口有一個人

The plural of person is people.

person 的複數形是 people

It refers to a group or a number of human beings.

它指的是一群或一些人

It is a plural countable noun.

是複數的可數名詞

There were three people at the door.

門口有三個人

So how about persons?

那 persons 呢？

Persons is a plural countable noun.

persons 是複數的可數名詞

It's similar to people, but it's considered more polite and more formal.

它跟 people 相似，但更禮貌也更正式

It's most often seen written down.

在書寫的形式中比較常見

This lift can hold a maximum of 15 persons.

這臺電梯最多可承載 15 個人

And peoples?

那 peoples 呢？

Peoples is the countable plural form of people and comes from the other meaning of people.

peoples 是 people 的可數複數形式，並延伸自 people 的其他意思

People can mean nation.

people 可以是民族的意思

The Aztecs were a people that lived in the Americas.

阿茲特克人是一群曾住在美洲的民族

Or, there are many peoples living on the Earth.

或者有許多不同民族的人們住在地球上

They are all human - so far.

他們都是人類，目前為止都是啦