Questions & Answers about Ona je zdrava, jer često jede voće i povrće.
Because ona means she, so the adjective has to match a feminine singular subject.
- zdrav = healthy, masculine
- zdrava = healthy, feminine
- zdravo = healthy, neuter
So:
- On je zdrav. = He is healthy.
- Ona je zdrava. = She is healthy.
Je is the 3rd person singular form of the verb biti (to be) in the present tense.
So Ona je zdrava literally works like She is healthy.
Present tense of biti:
- ja sam = I am
- ti si = you are
- on/ona/ono je = he/she/it is
- mi smo = we are
- vi ste = you are
- oni/one/ona su = they are
Unlike Russian, Serbian normally does use the present tense of to be.
Jer means because.
It introduces the reason: