有關英文語法問題

The plural form persons is used in some formal language.


You are right to confuse this.

I have checked two online dictionaries for you.

One of them says "The plural form persons is used in some formal language."

Another dictionary's definition shows that " person, plural- people or formal or law persons)

The plural form of "person" is usually "people".

However, "persons" can also be used, but only in public notices and other formal contexts.

Example:
• All persons born in the United States are citizens of the United States.