Possessive nouns show ownership or possession of something. To form a possessive noun, we typically add an apostrophe followed by -s (‘s) to a singular noun, and just an apostrophe (‘) for plural nouns that already end in -s.

Rules for Possessive Nouns

1. Singular Possessive
   • Add ‘s to the singular noun.
   • Examples:
     • Sarah’s book (The book belongs to Sarah.)
     • The cat’s tail (The tail of the cat.)
2. Plural Possessive (Nouns Ending in -s)
   • Add only an apostrophe (‘) to plural nouns that end in -s.
   • Examples:
     • The teachers’ lounge (The lounge belongs to the teachers.)
     • The dogs’ toys (The toys belong to the dogs.)
3. Plural Possessive (Irregular Plurals)
   • Add ‘s to irregular plural nouns that do not end in -s.
   • Examples:
     • The children’s playground (The playground belongs to the children.)
     • The men’s jackets (The jackets belong to the men.)

Examples of Possessive Nouns in Sentences:

• Mary’s car is parked outside.
• The boys’ toys are scattered everywhere.
• The children’s laughter filled the room.