Breakdown of После ужина мы открыли один гранат и долго ели его всей семьёй.
Questions & Answers about После ужина мы открыли один гранат и долго ели его всей семьёй.
Because после always takes the genitive case.
- ужин = dinner
- после ужина = after dinner
So ужина is the genitive singular form of ужин.
This is a very common pattern:
- после урока = after the lesson
- после работы = after work
- после фильма = after the film
Открыли is perfective past tense, so it presents the action as a completed whole: we opened it.
In this sentence, the idea is:
- first, they opened one pomegranate,
- then they spent a long time eating it.
That completed, one-time action is why открыли is natural here.
Compare:
- мы открыли гранат = we opened the pomegranate / we cut it open
- мы открывали гранат = we were opening the pomegranate / used to open pomegranates / opened it repeatedly, depending on context