Questions & Answers about Mamy już kupione mandarynki i borówki na weekend.
Both are possible, but they focus on slightly different things.
- Kupiliśmy już mandarynki i borówki na weekend = We already bought tangerines and blueberries for the weekend.
- Mamy już kupione mandarynki i borówki na weekend = We already have the tangerines and blueberries bought / taken care of for the weekend.
So mamy + kupione emphasizes the resulting state: the shopping is done, the matter is settled. It often sounds a bit like we’ve already got that sorted.
Kupione is a passive participle formed from kupić (to buy).
It is not the normal past tense.
The normal past tense would be:
- kupiłem / kupiłam = I bought
- kupiliśmy = we bought
In mamy już kupione, the participle works with mamy to create a resultative meaning: we have it bought, meaning it is already bought from our point of view.