Ova knjiga je tvoja.

to be

Breakdown of Ova knjiga je tvoja.

• knjiga: book
• ovaj: this
• tvoj: yours

Questions & Answers about Ova knjiga je tvoja.

Why is it ova and not ovaj or ovo?

Because knjiga is a feminine singular noun, and ova has to agree with it.

The demonstrative ovaj meaning this changes form by gender:

• ovaj = masculine
• ova = feminine
• ovo = neuter

So:

• ova knjiga = this book
• ovaj sto = this table
• ovo pismo = this letter

Agreement is very important in Serbian.

Why is it tvoja and not tvoj?

For the same reason: tvoja must agree with knjiga.

The word tvoj means your, but it changes form depending on the noun it describes:

• tvoj = masculine
• tvoja = feminine
• tvoje = neuter

So:

• tvoj brat = your brother
• tvoja knjiga = your book
• tvoje dete = your child

In Ova knjiga je tvoja, the understood noun is still knjiga, so the feminine form tvoja is used.

What exactly does mean here?