This is the 978th most frequent Croatian word.
treba
"Treba" in Croatian means "need" or "should," depending on context.
Here, 'Treba' refers to the requirement of an action related to the subject.
Sviđa mi se ova knjiga, ali treba pažljivo čitati jer je složena.
I like this book, but it needs to be read carefully because it is complex.
Here, 'Treba' expresses necessity or obligation.
Treba učiti svaki dan kako bi se naučio novi jezik.
One needs to study every day to learn a new language.
In this context, 'Treba' asks about the necessity or need for an object, using the dative case for the subject.