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The perfekat in detail: formation and agreement

Perfekat = short form of biti + active participle (glagolski pridjev radni). On its own it covers English “I did”, “I have done” and “I was doing”.

Forming the participle: remove -ti and add -o, -la, -lo, -li, -le, -la.

infinitivem.f.note
čitatičitaočitalaregular
raditiradioradilaregular
vidjetividiovidjela-jeti: m. in -io, f. in -jela (htio / htjela, volio / voljela)
ići, doćiišao, došaoišla, došlaverbs in -ći: present stem
moći, rećimogao, rekaomogla, reklasame
jesti, uzeti, bitijeo, uzeo, biojela, uzela, bilashort verbs

Agreement with the subject (gender and number, always):

masculinefeminineneuter
singularon je radioona je radiladijete je radilo
pluraloni su radilione su radilesela su bila

Mixed group → masculine plural: Ana i Marko su došli. A woman says Bila sam, a man Bio sam.

Word order: the auxiliary is in 2nd position, never first: Ja sam radio. / Radio sam. / Jučer sam radio. With se in the 3rd person, je disappears: On se vratio. — He came back. Negative: Nisam radio. Question: Jesi li radio? / Da li si radio?

The choice of aspect does the work of English “did” vs “was doing”: Pročitao sam knjigu (I read the book, finished it) — Čitao sam cijeli dan (I was reading all day).

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