The Serbian imperative of biti (to be) appears in encouragement, advice, warnings and everyday instructions. The two forms you need most are budi for one person informally and budite for formal address or more than one person.

Budi and budite: the imperative of biti

Practise the verb “to be” in the imperative mood with this video and follow-up exercise.
These forms are often followed by an adjective. The adjective agrees with the person or people you are addressing:

After watching, create two examples with budi and two with budite. You can also review earlier intermediate and pre-intermediate Serbian posts.