Questions & Answers about Wieczorem idziemy na koncert do centrum miasta.
Polish often uses the instrumental case to express time when something happens.
- wieczór = evening (basic/nominative form)
- wieczorem = in the evening (instrumental form)
So instead of literally saying w wieczór, Polish normally just uses the instrumental:
- Wieczorem idziemy… = In the evening we’re going…
- Rano idę do pracy. = In the morning I go to work. (from rano – already an adverb)
- Nocą pracuje. = He/She works at night. (from noc, instrumental nocą)
w wieczór is not natural in standard Polish for clock/calendar time; you’ll hear wieczorem.
Wieczorem is the instrumental singular of the noun wieczór (evening).
Pattern:
- Nominative (dictionary form): wieczór – evening
- Instrumental (used here): wieczorem – (in/at) the evening
Instrumental singular ending -em is typical for many masculine nouns. Here it functions adverbially to say when something happens: wieczorem = in the evening.