Questions & Answers about Sutra ću putovati u grad.
The lesson is about htjeti (to want), but the translation says "I will". Why?
The short, unstressed forms of htjeti (like ću) act as helper verbs to form the future tense in Croatian. So while the full verb means "to want", using ću plus the infinitive verb (putovati) translates to "I will travel".
Why is ću placed right after Sutra? Can I start the sentence with ću?
No, you cannot start a sentence with ću. It is a "clitic" (a small, unstressed word) that strictly belongs in the second position of a Croatian sentence. Sutra (tomorrow) takes the first position, so ću must come right after it.
Where is the word for "I" (ja) in this sentence?
In Croatian, you usually drop subject pronouns like ja because the verb form (ću) already makes it completely clear who is doing the action. Saying Sutra ću ja putovati u grad is grammatically fine, but leaving out ja sounds much more natural.
Since grad (city) is the destination, shouldn't it change its ending?
It actually is in a different case, but you can't see it! The preposition u takes the accusative case when showing motion towards a destination. However, because grad is a masculine non-living noun, its accusative form is completely identical to its basic dictionary form.