Complete overview of I/me, you, he/him, she/her, it, we/us, they/them
Subject pronoun + verb | Verb + object pronoun
I don't know. / Don't tell me.
Do you know him? / Did she call?
💡 Subject = does action. Object = receives action. Use object after prepositions (to, for, with, etc.).
✓She and I went to the store.
✗Her and me went to the store.
Subject position needs subject pronouns (she, I).
✓The teacher gave the books to him and me.
✗The teacher gave the books to he and I.
After preposition 'to', use object pronouns (him, me).
✓It was they who called. (formal) / It was them who called. (informal)
✗N/A
After 'be', formal English uses subject pronouns; informal uses object.