Questions & Answers about Pobedila sam protivnika.
Because the speaker is female.
In Serbian past tense, the main verb agrees with the subject's gender and number. So:
- pobedila sam = I (female) defeated
- pobedio sam = I (male) defeated
This is one of the first things English speakers notice, since English past tense does not show the speaker's gender.
Sam is the 1st person singular auxiliary form of biti (to be) used to form the past tense.
So the past tense here is built like this:
- pobedila = past participle
- sam = auxiliary am
Together:
- pobedila sam = I defeated / I beat
This is the normal Serbian past tense pattern.
Because sam is a clitic, and clitics in Serbian usually go in the second position of the sentence or clause.
So Serbian often prefers:
- Pobedila sam protivnika.
If you add ja, then the clitic usually comes after that first element: