Questions & Answers about Morate promijeniti svoje loše navike.
Why does the sentence use svoje instead of vaše for "your"?
Svoj is a reflexive possessive word that means "one's own." You use it whenever the owner of the object is also the subject of the sentence. Since the subject here is "you" (hidden in the verb morate) and the habits belong to "you", you must use a form of svoj instead of vaš.
What case is the phrase svoje loše navike in, and why?
It is in the accusative case because it is the direct object of the verb promijeniti (to change). It answers the question "What must you change?".
Why does svoj take the exact form svoje here?
Like all possessive words, svoj must match the noun it describes in gender, number, and case. Navika (habit) is a feminine noun. Because we need the plural accusative form for "habits" (navike), the adjectives must also be feminine accusative plural, resulting in svoje and loše.
Why is the verb promijeniti in the infinitive (dictionary) form?
The main verb in the sentence is morate (you must), which is a modal verb. When a modal verb is followed by another action, that second verb stays in the infinitive form, very similar to English ("must change").