Learn Hardcore Croatian: Ona ide kroz park. - She is going through the park.

Both. Ide is the 3rd‑person singular present of ići (to go). Croatian has no dedicated present continuous, so Ona ide kroz park can mean either “She goes through the park” (habitually) or “She is going through the park” (right now). If you want to make “right now” explicit, add sada: Ona sada ide kroz park.

Why is kroz used here, and what case does it take?

Kroz means “through” and it always takes the accusative case. That’s why you get kroz park. Since park is a masculine inanimate noun, its accusative singular is identical to its nominative singular: park. More examples:

kroz šumu (through the forest)
kroz tunel (through the tunnel)

What’s the difference between kroz park and u park?

kroz park = through the park (entering it and coming out the other side).
u park = into the park (destination is the inside of the park; no implication you pass all the way through).

Compare:

Ona ide kroz park. (She’s using the park as a passage.)
Ona ide u park. (She’s going to the park—into it.)

Could I also say Ona ide parkom (without kroz)?

Yes. parkom is instrumental singular. Ona ide parkom means “She goes along/through the park (moving within it).” Nuance:

kroz park highlights movement from one side to the other.
parkom suggests moving within/along the park’s paths, without focusing on entering/exiting.

Do I have to say Ona, or can I drop the pronoun?

You can drop it: Ide kroz park. Croatian usually omits subject pronouns because the verb ending shows person/number. Keeping Ona adds emphasis or contrast (e.g., “She (not someone else) is going through the park”).

How do you conjugate ići in the present tense?

ja idem (I go)
ti ideš (you go, sg.)
on/ona/ono ide (he/she/it goes)
mi idemo (we go)
vi idete (you go, pl./formal)
oni/one/ona idu (they go)

What is the infinitive and the main past forms of ide?

Infinitive: ići (to go).
Past participles:

masculine: išao
feminine: išla
neuter: išlo
plural (mixed/masc.-personal): išli

Examples:

Ona je išla kroz park. (She was going/went through the park—imperfective, focusing on the process.)
Ona je prošla kroz park. (She passed through the park—perfective, completed event.)

Does ide mean specifically “walks,” or any kind of going?

ići is neutral: “to go” by any means (context decides). If you want to specify:

hoda = walks
šeta = strolls
trči = runs
vozi se = goes by car/is riding Examples:
Ona hoda kroz park. (She is walking through the park.)
Ona šeta parkom. (She is strolling in/through the park.)

How do I pronounce the sentence?

Roughly: “OH-nah EE-deh kroz pahrk.”

r is tapped/rolled.
Vowels are short and clear.
You may hear voicing assimilation in fast speech: kroz park can sound like “kros park” (the z devoices before p).

Why isn’t there a word for “the” before park?

Croatian has no articles. park can mean “a park” or “the park”; context disambiguates. If you need to be explicit, use demonstratives:

taj park (that park)
ovaj park (this park)

How do I make the sentence negative?

Put ne directly before the finite verb:

Ona ne ide kroz park.
(Without the pronoun): Ne ide kroz park.

How do I turn it into a yes–no question?

Several options:

Invert with li: Ide li (ona) kroz park?
Use da li (common in speech/regionally): Da li ide kroz park?
Keep word order and use questioning intonation (informal): Ide kroz park?

Can the word order change?

Yes, for emphasis or style:

Kroz park ide. (focus on “through the park”)
Kroz park ona ide. (extra emphasis on “she” and the route)
Ona kroz park ide. (focus near the verb) Default, neutral order is Ona ide kroz park (SVO).

What case ending would adjectives take here (e.g., “through the big city park”)?

With masculine inanimate nouns in the accusative singular, adjectives look like nominative:

kroz veliki gradski park Contrast with masculine animate, where the adjective would be -og/-eg:
Vidim velikog psa. (I see a big dog—animate accusative)

What other common prepositions with park should I know, and which cases do they trigger?

u park (into the park) — accusative (motion)
u parku (in the park) — locative (location)
iz parka (from/out of the park) — genitive
pored/kraj parka (beside the park) — genitive
pred parkom (in front of the park) — instrumental
uz park (along/next to the park) — accusative

Is there a difference between saying “She went through the park” with different verbs?

Yes, aspect and nuance change:

Ona je išla kroz park. (She was going/went—imperfective, process/habit.)
Ona je prošla kroz park. (She passed through—perfective, one completed traversal.)
Ona je otišla u park. (She left/went to the park—destination, not through it.)
Ona je pošla u park. (She set off for the park—starting the trip.)