Questions & Answers about Potrošač duguje kamatu.
Because it is the direct object of the verb duguje.
The basic dictionary form is kamata. In this sentence, it changes to the accusative singular:
- kamata = nominative singular
- kamatu = accusative singular
So:
- Potrošač = the subject
- duguje = owes
- kamatu = the thing being owed
This is very common with feminine nouns ending in -a:
- kuća → kuću
- žena → ženu
- kamata → kamatu
Duguje is the 3rd person singular present tense form of the verb dugovati, which means to owe.
So the pattern is:
- ja dugujem = I owe
- ti duguješ = you owe
- on/ona/ono duguje = he/she/it owes
Since potrošač is singular, the verb is also singular: duguje.