The Simple Sentence

A simple sentence is a single clause built around one finite verb. Croatian assembles it from the same parts English does — subject, predicate, objects, adverbials — but with two facts that will reshape your instincts from the very first lesson: the subject is usually dropped because the verb already carries the person, and the verb agrees with its subject not only in person and number but, in the past, in gender. Once you see how these pieces fit, you can build and parse the bread-and-butter sentences of everyday Croatian. This page is the anatomy lesson; the impersonal and existential variants get their own pages.

The two essential parts: subject and predicate

Every full sentence has a predicate (what is said) and, in principle, a subject (what it is said about). The predicate is built on a finite verb; the subject, when expressed, stands in the nominative case. The English order is subject-then-verb, and Croatian shares that as its neutral order, but as you will see, Croatian frequently leaves the subject unsaid.

The subject answers tko? / što? (who? / what?) and always sits in the nominative — it is the one role in the sentence that the verb actively agrees with, which is exactly why Croatian can so often leave it out.

Pro-drop: the verb already tells you who

This is the first big departure from English. English requires a subject pronoun — you cannot say sleep and mean "I sleep." Croatian can, and normally does, because the verb ending already encodes the person and number. Spavam can only mean "I sleep"; the -m is first-person singular. Adding ja ("I") is not wrong, but it is emphatic — you say it to contrast or stress, not by default.

Because of pro-drop, the minimal Croatian sentence can be a single word: a finite verb. Spavam ("I sleep"), Razumijem ("I understand"), Dolazimo ("we're coming") are all complete, grammatical sentences on their own.

The minimal sentence: a single verb

Two situations produce a one-word sentence. The first is pro-drop, just seen. The second is the impersonal verb — a verb that has no subject at all, only a fixed third-person-singular form. Weather verbs are the classic case.

Notice the difference from English, which forces a dummy it ("it's raining"). Croatian has no dummy subject: there is no word for the it of it's raining. The verb stands alone. (These subjectless patterns are explored fully on the impersonal sentences page.)

Subject-verb agreement in person and number

When the verb has a subject, it agrees with it in person (1st/2nd/3rd) and number (singular/plural). This is the engine of pro-drop, so it is worth seeing the present-tense pattern laid out, here with raditi ("to work").

The copula: On je student

English lets you link a subject to a noun or adjective with is/am/are, and Croatian does the same with the verb biti ("to be") — but here is a crucial point: unlike Russian, Croatian does not drop the copula in the present tense. You must say je, sam, si. A bare On student is not a sentence.

The present-tense forms of the copula (sam, si, je, smo, ste, su) are clitics — unstressed little words that cannot start a sentence and lean on the word before them. That is why On je student works (the clitic je leans on on) but Je on student as a statement does not. Their placement is the topic of the second-position rule; for now, just remember the copula is always present and never omitted. The full behaviour of biti is on the biti page.

Past-tense agreement: gender enters the picture

Here is the fact that most surprises English speakers. The Croatian past tense (the perfect) is built from the copula plus the l-participle of the main verb — and that participle agrees with the subject in gender and number, the way an adjective does. So the same event is said differently depending on who did it.

This means that even with pro-drop, the participle reveals the speaker's gender: a woman says Bila sam tamo ("I was there") and a man says Bio sam tamo. English has nothing like this — I was there gives away nothing. The participle endings (-o / -la / -lo / -li / -le) are the same set as adjective endings, which is the easiest way to remember them. The participle itself is detailed on the l-participle page.

Objects and adverbials: expanding the sentence

Once subject and predicate are in place, you expand the sentence with objects (case-marked, never nominative) and adverbials (time, place, manner). The direct object goes in the accusative; an indirect object goes in the dative.

The case endings — not word order — show which noun is doing what. That is why Croatian word order is freer than English: Knjigu čitam and Čitam knjigu both mean "I'm reading a book," because knjigu is unmistakably the object whatever its position. (Word-order freedom and what it signals is on basic word order.)

Common Mistakes

Key Takeaways

• A simple sentence is built on one finite verb; the subject (nominative) is usually dropped (pro-drop) because the verb ending already encodes person and number.
• A single verb can be a whole sentence — via pro-drop (Spavam "I sleep") or via a truly subjectless impersonal verb (Pada "it's raining"); Croatian has no dummy subject like English it.
• The present-tense copula is obligatory: On je student, never On student. The copula forms are clitics.
• The verb agrees with its subject in person and number, and in the past tense also in gender: Marko je došao vs Ana je došla.
• Objects are case-marked (accusative for direct, dative for indirect), which is why word order can be free.