Prodavnica je u mojoj ulici.

The store is on my street.

Breakdown of Prodavnica je u mojoj ulici.

• biti: to be
• u: in
• prodavnica: store
• moj: my

Questions & Answers about Prodavnica je u mojoj ulici.

Why is it u mojoj ulici and not u moja ulica?

Because after the preposition u when it means in / at / on, Serbian normally uses the locative case.

So:

• moja ulica = my street (dictionary/basic form)
• u mojoj ulici = in/on my street (locative)

Both words change:

• moja → mojoj
• ulica → ulici

This is very common in Serbian: the adjective and noun usually both change to match the case.

What case is mojoj ulici?

It is the locative singular.

Here is the breakdown:

• ulica is a feminine noun
• in the locative singular, ulica becomes ulici
• the possessive adjective moja also has to match, so it becomes mojoj

So u mojoj ulici is a feminine singular locative phrase.

Why does moja become mojoj?

Because moja has to agree with ulica in:

• gender: feminine
• number: singular
• case: locative