Prepositions and the relative pronoun 'koji'
In English, we often end a sentence with a preposition (e.g., "the apartment we live in"). In Croatian, the preposition cannot be left at the end of the clause. It must come right before the relative pronoun (e.g., "the apartment in which we live").
The preposition you use determines the case of the relative pronoun koji.
Locative case: 'u' (in) and 'o' (about)
When talking about locations you are in (u) or topics you are discussing (o), you need the locative case. The locative forms of koji are exactly the same as the dative forms you already know!
| Gender | Locative Form |
|---|---|
| Masculine / Neuter | kojem |
| Feminine | kojoj |
| Plural (All Genders) | kojima |
For masculine nouns like smještaj (accommodation), use kojem:
| This is the accommodation I live in now. | Ovo je smještaj u kojem sada živim. |
| We are looking for the accommodation we talked about yesterday. | Tražimo smještaj o kojem smo jučer razgovarali. |
For feminine nouns, use kojoj:
| The building we live in has a large shared space. | Zgrada u kojoj živimo ima velik zajednički prostor. |
| The rent we constantly argue about is too expensive. | Najamnina o kojoj stalno raspravljamo previše je skupa. |
When referring to plural nouns of any gender, use kojima:
| The people we are talking about live in this neighborhood. | Ljudi o kojima razgovaramo žive u ovom susjedstvu. |
Instrumental case: 's' (with)
When you describe someone you do things with, or something you agree or make peace with, you use the preposition s (with). This preposition requires the instrumental case.
Here is a quick reminder of the instrumental forms of koji:
| Gender | Instrumental Form |
|---|---|
| Masculine / Neuter | kojim |
| Feminine | kojom |
| Plural (All Genders) | kojima |
For masculine and neuter nouns, use s kojim:
| The landlord I drink coffee with is very kind. | Stanodavac s kojim pijem kavu vrlo je ljubazan. |
For feminine nouns, use s kojom:
| That is the rent I do not agree with. | To je najamnina s kojom se ne slažem. |
| That is a flaw I can make peace with. | To je mana s kojom se mogu pomiriti. |