Questions & Answers about После прогулки в парке я чувствую себя бодрее.
Because после requires the genitive case.
- Dictionary form: прогулка
- Genitive singular: прогулки
So:
- после прогулки = after a walk
- после урока = after the lesson
- после работы = after work
This is a very common pattern in Russian: после + genitive.
Because here в парке answers the question where?, not to where?
Russian uses:
- в + accusative for motion into/to a place
- идти в парк = to go to the park
- в + prepositional for location in/at a place
- гулять в парке = to walk in the park
In this sentence, the walk happened in the park, so Russian uses the prepositional case:
- парк → в парке