Questions & Answers about Oni su svakodnevno u teretani.
How does svakodnevno fit in with the other adverbs of frequency?
It means 'daily' or 'every day'. Like često (often) or rijetko (rarely), it ends in -o, which is a very common ending for adverbs in Croatian. It tells us how often the action happens and usually goes after the verb.
Why doesn't the adverb go before the verb here?
In Croatian, word order rules for 'clitics' take priority. The verb su (are) is a clitic, meaning it is a weak word that strictly needs to be the second element in the sentence. Because Oni is in the first spot, su must be second, forcing svakodnevno to come after it.
I spot the word dan inside svakodnevno. Are they related?
Yes! It is a compound word. It combines svaki (every) and dan (day), plus a suffix that turns it into an adverb. You can think of it literally as 'every-day-ly'.
Why is it u teretani instead of the dictionary form u teretana?
The preposition u requires the locative case here because it describes being in a fixed location. The word teretana (gym) is a feminine noun ending in -a, and in the locative case, that ending changes to -i.