Questions & Answers about Kada idem u grad, nosim torbu sa papirom i olovkom.
In Serbian, subject pronouns are often omitted because the verb ending already shows who is doing the action.
- idem = I go / I am going
- nosim = I carry / I wear / I take
So Kada idem u grad, nosim torbu... already clearly means When I go into town, I carry a bag...
You could add ja for emphasis, but it is not necessary in a neutral sentence.
Kada means when and introduces a time clause.
So:
- Kada idem u grad = When I go into town
It connects the first part of the sentence with the main clause:
- Kada idem u grad, nosim torbu...
In everyday speech, kad is also very common and means the same thing here.
So Kad idem u grad... would sound natural too.
Serbian uses the present tense for habitual actions, just like English often does.
So this sentence does not mean only right now. It can mean something like:
- Whenever I go into town, I carry a bag with paper and a pencil
- When I go into town, I take a bag with paper and a pencil