Questions & Answers about Ja czekam na pociąg.
No – in Polish subject pronouns are usually optional. The ending -am on czekam already tells you it’s first-person singular (“I”). You include ja only for emphasis or contrast, e.g.
- Ja czekam na pociąg (I’m the one waiting for the train).
The verb czekać always takes the preposition na plus the accusative case.
- czekać na coś / kogoś = to wait for something/someone
Here pociąg is in the accusative because of na.
Good observation! Pociąg is an inanimate masculine noun, and in Polish inanimate masculines have the same form in nominative and accusative.
- Nominative: pociąg
- Accusative: pociąg
By contrast, animate masculine nouns (like student) do change: student → studenta.