Pre nego što odemo, želim još jednom da proverim da li imam pasoš i karticu.

Pre nego što means before in the sense of before something happens.

• pre by itself often means before / earlier than
• nego što introduces a whole clause

So:

• pre puta = before the trip
• pre nego što odemo = before we leave

You need pre nego što because what follows is a full action: odemo (we leave).

Odemo comes from otići (to leave / go away), while idemo comes from ići (to go).

Here the idea is specifically leave / depart, not just go in a general sense. That is why odemo is natural.

Also, after pre nego što, Serbian often uses a present-tense form of a perfective verb to refer to a future action:

• pre nego što odemo = before we leave

Even though odemo looks like present tense, in this kind of clause it refers to a future event.

This is very common in Serbian. After conjunctions like kad, čim, dok, pre nego što, Serbian often uses present-tense forms where English would use a future idea.

So Serbian says literally something like:

• before we leave

not

• before we will leave

This is normal grammar, especially when the verb is perfective, as in odemo.

Because Serbian verbs usually already show the subject.

• odemo = we leave
• želim = I want
• imam = I have

Subject pronouns like mi and ja are often omitted unless you want emphasis or contrast.

For example:

• Ja želim would sound more emphatic: I want
• plain želim is the neutral normal form

In Serbian, the structure verb + da + present tense is extremely common where English would often use an infinitive.

So:

• želim da proverim = I want to check

This is one of the most important Serbian patterns to learn.

You may also see infinitives in dictionaries, but in everyday speech da + present is very frequent and natural.

They do two different jobs.

1. želim ... da proverim
   Here da is part of the common pattern want to do something.

2. proverim da li imam...
   Here da li introduces an embedded yes/no question: whether I have...

So the structure is:

• I want to check
• whether I have my passport and card

The two da's are not the same grammatical element, even though they look identical.

Da li means whether / if when introducing a yes/no question inside a sentence.

So:

• proverim da li imam pasoš i karticu = check whether I have my passport and card

Compare:

• Imam pasoš. = I have my passport.
• Da li imam pasoš? = Do I have my passport?
• Želim da proverim da li imam pasoš. = I want to check whether I have my passport.

Još jednom means once more / one more time / again.

Literally:

• još = still / more / additional
• jednom = once / one time

Together they often mean:

• again
• one more time

In this sentence, it adds the idea of checking again before leaving.

Because both nouns are direct objects, so they are in the accusative case, but they behave differently.

• pasoš is masculine singular inanimate, so its accusative is the same as its nominative:

  • nominative: pasoš
  • accusative: pasoš

• kartica is feminine singular, and its accusative changes:

  • nominative: kartica
  • accusative: karticu

So:

• imam pasoš
• imam karticu

This is a very common case pattern in Serbian.

Masculine inanimate nouns usually have the same form in nominative and accusative singular.

Examples:

• pasoš → pasoš
• telefon → telefon
• kofer → kofer

But masculine animate nouns usually change in the accusative:

• student → studenta
• brat → brata

Since pasoš is inanimate, it stays the same.

Here jednom is the instrumental form of jedan in an adverbial expression.

The phrase još jednom is fixed and very common, and learners usually just remember it as a whole expression meaning:

• once more
• again

You do not need to analyze it every time, but yes, grammatically it is instrumental.

That word order is natural and neutral.

• želim = main verb
• još jednom = adverbial phrase modifying proverim
• da proverim = what the speaker wants to do

Serbian word order is flexible, but not random. This version sounds smooth and standard.

You could move things for emphasis, but the original is the most ordinary way to say it.

Yes, often it could.

• želim još jednom da proverim
• želim ponovo da proverim

Both can mean I want to check again.

But there is a small nuance:

• još jednom often feels like one more time
• ponovo is more simply again

In this sentence, još jednom sounds very natural because the speaker is doing a last extra check before leaving.

Kartica is a general word for a card. Its exact meaning depends on context.

It can mean things like:

• bank card
• ID card
• payment card
• SIM card, membership card, and so on

In this sentence, the listener would usually understand it from the situation. If needed, Serbian can be more specific, for example:

• lična karta = ID card
• bankovna kartica = bank card

Proverim is the 1st person singular present form of the perfective verb proveriti.

Perfective verbs focus on a completed action, so here the idea is:

• I want to check it once and make sure

That fits the situation well: a single completed check before leaving.

The imperfective partner is proveravati or sometimes proverati in certain contexts, but for a one-time completed check, proveriti is the natural choice.

Not very naturally. A rough word-for-word version would be something like:

• Before than that we-leave, I-want one-more time to-check whether I-have passport and card.

That shows why Serbian and English structure things differently.

A natural English translation would be:

• Before we leave, I want to check one more time whether I have my passport and card.

So it is better to learn the Serbian patterns directly rather than trying to match every word to English.