Questions & Answers about Predlažem piknik u parku.
Because Serbian usually does not need a subject pronoun when the verb ending already shows who is doing the action.
Predlažem already means I suggest.
You can add ja if you want emphasis or contrast:
- Ja predlažem piknik u parku. = I am suggesting a picnic in the park.
- Ja predlažem, a ti odluči. = I suggest it, and you decide.
So in a neutral sentence, leaving out ja is completely normal.
Predlažem is the 1st person singular present tense form of the verb predlagati = to suggest / to propose.
The ending -em tells you it means I:
- predlažem = I suggest
- predlažeš = you suggest
- predlaže = he/she/it suggests
A useful extra point: the perfective partner is predložiti, but the form in your sentence is the imperfective predlažem, which is the normal present-tense form for I suggest.
Serbian has no articles. So nouns often appear without anything corresponding to English a/an or the.