Usages of u
Ja sam u gradu.
I am in the city.
Ivan je u gradu.
Ivan is in the city.
Gradu is the locative form of grad. The locative is used after the word u.
Imamo mali stan u gradu.
We have a small apartment in the city.
Ti si u gradu.
You are in the city.
Oni su u kući.
They are in the house.
Dok sunce zalazi, sjedimo u parku.
While the sun sets, we sit in the park.
Kad sunce zalazi, baka i ja sjedimo u parku.
When the sun sets, grandmother and I sit in the park.
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