What are the rules for making a possessive noun?

Answer 1

SINGULAR NOUNS

Singular possessive nouns are formed by adding an apostrophe s ('s) to the end of a noun.

Example: I used my grandma's recipe for the cake.

There are two accepted forms that show possession for singular nouns ending in s:

• Add an apostrophe (') after the existing s at the end of the word: Thomas'
• Add an apostrophe s ('s) after the existing s at the end of the word: Thomas's

Examples:

I like Thomas' new bicycle.

I like Thomas's new bicycle.

Note: If you are a student, use the form that is preferred by your teacher.

PLURAL NOUNS

Plural nouns ending in s form the possessive by adding an apostrophe (') after the s at the end of the word.

Plural noun that do not end in s form the possessive by adding an apostrophe s ('s) to the end of the word.

Examples:

The books' covers were damaged in storage.

The children's coats all hung in a row.

Answer 2

To make a possessive noun, you typically add an apostrophe followed by the letter "s" ('s) to singular nouns (e.g., dog's bone). For plural nouns that end in "s," you add only an apostrophe (') after the "s" (e.g., cats' toys). If a plural noun does not end in "s," you add an apostrophe followed by "s" (e.g., Children's Books).