| Subject | Object | Possessive adjective | Possessive pronoun |
| I I write letters | Me Who writes letters? Me | My These are my letters | Mine These letters are mine |
| You You write letters | You Who writes letters? You | Your These are your letters | Yours These letters are yours |
| He He writes letters | Him Who writes letters? Him | His These are his letters | His These letters are his |
| She She writes letters | Her Who writes letters? Her | Her These are her letters | Hers These letters are hers |
| It It writes letters | It Who writes letters? It | Its These are its letters | – |
| We We write letters | Us Who writes letters? Us | Our These are our letters | Ours These letters are ours |
| They They write letters | Them Who writes letters? Them | Their These are their letters | Theirs These letters are theirs |
We can use possessive pronouns and nouns after OF. For example:
Sam is one of my friends = Sam is a friend of mine (possessive pronoun)
I am one of Sam’s friends = I am a friend of Sam’s (noun)
