My, your, our…
můj bratr, moje sestra, naše auto
In short
Můj, tvůj, náš, váš change to match the thing you own: můj bratr, moje sestra, moje auto. But jeho (his) and jejich (their) never change, and její (her) is the same for all three genders. Easy!
- můj bratr · moje sestramy brother · my sister
- náš dům · naše městoour house · our town
- jeho mámahis mum
- její tátaher dad
Full explanation
Possessives work like little adjectives: they look at the thing you own and match its gender.
| Masculine | Feminine | Neuter | |
|---|---|---|---|
| my | můj bratr | moje (má) sestra | moje (mé) auto |
| your (ty) | tvůj bratr | tvoje (tvá) sestra | tvoje (tvé) auto |
| our | náš bratr | naše sestra | naše auto |
| your (vy) | váš bratr | vaše sestra | vaše auto |
| his / its | jeho (never changes) | ||
| her | její (no change in the nominative) | ||
| their | jejich (never changes) | ||
- The short forms má, mé, tvá, tvé mean the same as moje, tvoje. They sound a bit more literary, so in everyday chat you'll mostly hear moje, tvoje.
- With jeho / její, what matters is the owner: jeho máma is his mum, její táta is her dad.
There's also svůj, which means "my own / your own / his own…" and points back to the subject: Petr má svůj pokoj. You'll meet it properly later.