Questions & Answers about Sutra moja sestra slavi rođendan u stanu.
Why is slavi in the present tense if the sentence says sutra?
In Serbian, the present tense is often used for a future action when a time word already makes the future clear, such as sutra = tomorrow.
So:
Sutra moja sestra slavi rođendan u stanu.
naturally means Tomorrow my sister is celebrating her birthday in the apartment/flat.
This is very common and natural in Serbian. You could also say:
Sutra će moja sestra slaviti rođendan u stanu.
That version uses the explicit future tense and is also correct.
What case is moja sestra, and why does it look like that?
Moja sestra is in the nominative case because it is the subject of the sentence — the person doing the action.
- sestra = sister
- moja = my
The adjective/pronoun moja agrees with sestra in:
- gender: feminine
- number: singular
- case: nominative
So moja sestra means my sister as the subject.
Why is it rođendan and not some different form?
Because rođendan is the direct object of slavi — it is the thing being celebrated.