Večeras ću biti kod moje sestre.

to be

Breakdown of Večeras ću biti kod moje sestre.

• moj: my
• sestra: sister
• večeras: tonight

Questions & Answers about Večeras ću biti kod moje sestre.

What does večeras mean, and why isn’t it just večer?

Večeras means tonight / this evening.

It is an adverb, so it answers when? In this sentence, it tells you when the speaker will be somewhere.

• večer / veče = evening (a noun)
• večeras = this evening / tonight (an adverb)

So Serbian uses večeras where English would naturally say tonight.

How does ću biti work?

Ću biti is the future tense of biti (to be).

Serbian often forms the future with:

• a short form of hteti (to want, used as a future auxiliary)
• • the infinitive

So:

• ću = I will
• biti = be

Together:

• ću biti = I will be

In this sentence:

• Večeras ću biti... = Tonight I will be...

Why is it ću biti, not just biću?

Both are possible in Serbian, but they are formed a little differently.