Breakdown of Wieczorem dziadek rozpalił ognisko w ogrodzie.
Questions & Answers about Wieczorem dziadek rozpalił ognisko w ogrodzie.
Wieczorem is the instrumental case of wieczór (evening).
Polish often uses the instrumental to express when something happens, especially with parts of the day:
- rano – in the morning
- po południu – in the afternoon
- wieczorem – in the evening
- nocą – at night
So Wieczorem dziadek… literally feels like “(Doing this) in the evening, grandpa…”.
You would use wieczór (nominative) mainly when evening is the subject or object:
- Wieczór był chłodny. – The evening was cold.
- Lubię wieczór. – I like the evening.
Wieczorem is instrumental singular.
For time expressions like this you do not use a preposition:
- Wieczorem czytam książki. – I read books in the evening.
- Rano piję kawę. – I drink coffee in the morning.
Using w wieczór is not idiomatic in modern Polish for this meaning. You simply put the time word in the right form (here: wieczorem) at the beginning or elsewhere in the sentence.