Questions & Answers about Ona danas ništa ne kupuje.
Yes, it could.
Serbian usually does not need a subject pronoun, because the verb ending already shows the person and number. Kupuje means he/she/it buys / is buying, so ona is often optional.
- Ona danas ništa ne kupuje. = She isn’t buying anything today.
- Danas ništa ne kupuje. = same basic meaning
Including ona can add a bit of emphasis or make it extra clear who you mean.
Danas means today.
Serbian word order is fairly flexible, so danas can appear in different places without changing the core meaning:
- Ona danas ništa ne kupuje.
- Danas ona ništa ne kupuje.
- Ona ništa ne kupuje danas.
These all mean roughly the same thing, but the emphasis can shift slightly depending on position.
Yes, from an English perspective it looks like a double negative, but in Serbian this is normal and required. This is called negative concord.
So in Serbian, if you use a negative word like ništa (nothing / anything in negative contexts), the verb also has to be negative: