Learn Croatian: Obavezno trebamo naći dobro rješenje. - We definitely need to find a good solution.

In this sentence, the people who need something are also the ones doing the action (finding). In Croatian, when a specific person needs to do an action, you usually conjugate trebati to match them (mi trebamo = we need) and follow it directly with the infinitive verb (naći). If no specific person was mentioned, you would use the impersonal form treba (it is necessary).

Is Obavezno related to the word for 'obligation'?

Yes! It comes from the noun obaveza (obligation). As an adverb, obavezno means 'without fail,' 'obligatorily,' or 'definitely.' Putting it at the very beginning of the sentence adds strong emphasis: we absolutely must find a solution.

Why does the adjective end in -o in dobro rješenje?

The noun rješenje (solution) is a neuter noun, which you can often spot by the -e or -o ending. The adjective has to match its gender, so the masculine dobar becomes the neuter dobro. Both words are in the accusative case because they are the direct object being found, and for neuter nouns, the accusative form is identical to the dictionary (nominative) form.

Why use the perfective verb naći instead of the imperfective nalaziti?