Questions & Answers about Vidim zvezdu na laptopu.
Because Serbian often drops the subject pronoun when it is clear from the verb.
Here, vidim already means I see:
- vid-im = I see
So Ja vidim zvezdu na laptopu is also possible, but ja would usually add emphasis, like I see it.
Because zvezdu is in the accusative case, which is used for the direct object of the verb.
In this sentence, the thing being seen is the star, so zvezda changes form:
- nominative: zvezda
- accusative: zvezdu
This is a very common pattern for feminine nouns ending in -a:
- žena → ženu
- knjiga → knjigu
- zvezda → zvezdu
Vidim is the 1st person singular present tense form of videti.
So it matches the hidden subject I:
- ja vidim = I see
- ti vidiš = you see
- on/ona vidi = he/she sees