Questions & Answers about Kupujem komad sira.
Kupujem is the 1st person singular present tense form of kupovati / kupujem, an imperfective verb.
So it means I buy or I am buying, depending on context. Serbian present tense often covers both the simple present and the present continuous that English separates.
Because Serbian makes an important distinction between imperfective and perfective verbs.
- kupovati / kupujem = imperfective, focusing on the process or repeated action
- kupiti / kupim = perfective, focusing on completing the action
In a plain sentence like this, kupujem is the natural choice for I am buying / I buy.
Kupim is not normally used to mean I am buying right now. In many contexts, the present tense of a perfective verb points to a future or completed event instead.
Komad is the direct object of the sentence, so it is in the accusative singular.
However, komad is a masculine inanimate noun, and for many masculine inanimate nouns, the accusative singular looks exactly like the nominative singular.
So:
- nominative: komad