Notes on the English language.

Apostrophes

Using an apostrophe ' together with the letter s indicates posession.

A singular noun will use the apostrophe before the s, whereas it comes after in the plural version:

Susan owns a hat. It is Susan's hat.
The family Scott owns this house. It's the Scotts' house.

Nouns that are always plural use the apostrophe before the s:

These children's scores are the highest in the nation.

Possessive pronouns do not have an apostrophe:

It's just the dog eating its bone.

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