Questions & Answers about Je li prozor plav?
Why is the word for blue plav here, instead of plava or plavo?
Adjectives must match the gender of the noun they describe. The word for window, prozor, is a masculine noun because it ends in a consonant. Therefore, the adjective must be in its masculine form, plav. If we were describing a feminine noun like kuća (house), it would be plava.
How does Je li work to make this a question?
Je means "is", and li is a little word called a question particle. Putting Je li at the start of a sentence is the standard way to ask a "yes/no" question in Croatian. It works similarly to moving "Is" to the front of a sentence in English.
Can I just ask Je prozor plav? and leave out li?
No, you cannot drop li when starting a question with Je. You need the question particle. However, you can ask questions just by using a normal statement and raising your voice at the end, like Prozor je plav? (The window is blue?). Still, using Je li... is the standard and clearest way to ask.
Why does the adjective plav come after the noun prozor in this sentence?