Affirmative present

Drop -ти from имати and add the regular -ам-group endings (see the table below). Имаш ли…?, with the question particle ли right after the verb, is the natural way to ask a yes/no question.

Negative present - немати

The negative of имати is not не + имати written apart - it is its own verb, немати, built on the present stem нема- (see the table below), the same fused pattern as бити's нисам.

Age and the impersonal нема

To give your age, Serbian uses имати, not бити: Ја имам двадесет година. (literally I have twenty years) means „I am twenty years old.“

Without any subject, 3rd-person-singular нема means there isn't/aren't: Нема проблема. (No problem.) The missing thing is expressed in a special case form, covered fully in a later lesson - for now, learn such phrases as fixed wholes.