Most unit nouns add S to make the plural, but some are irregular.
but if the word ends with ch / sh / s / x / y / z / fe, the spelling is a little different. Look at Lesson 91
Here are some useful examples:
[S] person [P] people
[S] man [P] men
[S] woman [P] women
[S] foot [P] feet
[S] tooth [P] teeth
[S] sheep [P] sheep
[S] fish [P] fish
[S] child [P] children
[S] appendix [P] appendices
[S] nucleus [P] nuclei
Those scissors are very sharp.
The pants are too long for me.
I can't see with these glasses.
If we want to count with these words, we use pair:
pair of scissors ( = 1 ), four pairs of pants
For example: clothes, customs (at airports), premises, thanks, wages
The family are all out at the moment. NOT is
The majority think he is right. NOT thinks
The police are questioning him now. NOT is
NOTICE: News is not a plural. It is a mass noun. Mass nouns do not have a plural form (Lesson 47).