Mobilna tarifa je skupa.

to be

Breakdown of Mobilna tarifa je skupa.

• skup: expensive
• mobilna tarifa: mobile plan

Questions & Answers about Mobilna tarifa je skupa.

Why does mobilna end in -a?

Because tarifa is a feminine singular noun, and Croatian adjectives must agree with the noun they describe in gender, number, and case.

So:

• mobilna tarifa = feminine singular
• masculine would be something like mobilni plan
• neuter would be mobilno ...

Here, mobilna matches tarifa.

Why is skupa also feminine?

For the same reason: it agrees with tarifa.

Even though skupa comes after je and works like expensive in English, it still changes form to match the subject:

• tarifa je skupa = feminine singular
• plan je skup = masculine singular
• rješenje je skupo = neuter singular
• tarife su skupe = plural

So Croatian predicate adjectives also show agreement.

What does je mean here?