Questions & Answers about Kočka si olizuje tlapku.
- kočka = cat
- si = a reflexive/dative pronoun, often meaning something like for itself / to itself
- olizuje = licks / is licking
- tlapku = paw in the accusative form
So structurally, it is something like The cat is licking its paw.
Kočka is the subject of the sentence, so it is in the nominative case, which is the basic dictionary form for this noun.
- nominative singular: kočka = cat
- The sentence is about what the cat is doing, so nominative is expected.
Because tlapka is the direct object of the verb olizovat (to lick), it has to be in the accusative case.
- nominative: tlapka
- accusative: tlapku
So:
- kočka = the one doing the action
- tlapku = the thing being licked