Moja sestra je juče našla kišobran u kancelariji.

in

Breakdown of Moja sestra je juče našla kišobran u kancelariji.

• moj: my
• sestra: sister
• kancelarija: office

Questions & Answers about Moja sestra je juče našla kišobran u kancelariji.

What is the grammatical structure of the sentence?

It breaks down like this:

• Moja sestra = the subject, my sister
• je našla = the verb phrase, found
• juče = an adverb of time, yesterday
• kišobran = the direct object, umbrella
• u kancelariji = a prepositional phrase showing location, in the office

So the sentence structure is basically:

subject + auxiliary + adverb + main verb + object + location

Serbian word order is more flexible than English, but this is a very natural order.

Why is it moja sestra and not moj sestra?

Because moj changes to match the noun it describes.

Sestra is:

• feminine
• singular
• nominative

So the possessive adjective must also be feminine singular nominative:

• moj brat = my brother
• moja sestra = my sister
• moje dete = my child

This kind of agreement is very important in Serbian.

Why is there je in the sentence?

Je is the 3rd person singular present form of biti = to be, and here it is used as an auxiliary verb to make the past tense.