Moram da nosim pasoš kada putujem, ali ga sada ne mogu da nađem.

In Serbian, morati means to have to / must.

A very common pattern is:

• moram da + present tense verb

So:

• moram = I must / I have to
• da nosim = to carry / to wear / to have on me

Together:

• Moram da nosim pasoš = I have to carry a passport

This da + present structure is extremely common in Serbian and often corresponds to an English infinitive:

• Moram da idem = I have to go
• Želim da učim = I want to study

Modern Serbian very often uses da + present tense where English uses to + verb.

So instead of saying something like moram nositi, Serbian commonly says:

• moram da nosim

Both infinitives and da-constructions exist in Serbian, but after many verbs, especially in everyday speech, da + present is the most natural pattern.

So for a learner, it is very useful to get used to:

• hoću da idem = I want to go
• mogu da nađem = I can find
• moram da nosim = I have to carry

Nositi basically means to carry, to wear, or to have on/with you, depending on context.

In this sentence:

• Moram da nosim pasoš kada putujem

it means something like:

• I have to carry my passport
• I have to have my passport with me

It does not necessarily mean physically holding it in your hand. It means you need to have it with you while traveling.

Serbian has no articles. There is no direct equivalent of English a/an or the.

So:

• pasoš can mean a passport, the passport, or passport, depending on context.

Here, English would naturally say:

• I have to carry a passport when I travel or
• I have to carry my passport when I travel

Serbian leaves that specificity to context.

Because Serbian, like English in this kind of sentence, often uses the present tense for habitual or general time clauses.

• kada putujem literally = when I travel

This means whenever I travel or when I am traveling, depending on context.

So the sentence is talking about a general rule:

• When I travel, I have to carry a passport.

It is not referring to one specific future trip.

Yes. Kad and kada both mean when.

• kada is a bit fuller and sometimes sounds slightly more formal or careful
• kad is very common in everyday speech

So these are both natural:

• Moram da nosim pasoš kada putujem
• Moram da nosim pasoš kad putujem

Putujem is the 1st person singular present tense of putovati = to travel.

So:

• putujem = I travel / I am traveling

In a clause like kada putujem, the present tense expresses a repeated or general action:

• when I travel
• whenever I travel

This is very normal in Serbian.

Ga means him/it and is the short accusative form of the pronoun.

Here it refers to:

• pasoš = passport

Since pasoš is masculine singular, the pronoun is:

• ga = it

So:

• ali ga sada ne mogu da nađem

means literally:

• but it now I cannot find
• more natural English: but I can’t find it now

This is very common in Serbian: once the noun has been mentioned, you often replace it with a pronoun.

Because Serbian has clitics, which are short unstressed words that usually go near the beginning of the clause, often in the second position.

That is why Serbian says:

• ali ga sada ne mogu da nađem

rather than placing ga at the very end.

A learner will notice this with many short pronouns and forms like:

• ga, je, mi, ti, se, sam, si, smo

So even though English says:

• I can’t find it now

Serbian naturally puts ga earlier.

This is about aspect, which is very important in Serbian.

• naći / nađem = perfective = to find as a completed result
• nalaziti / nalazim = imperfective = to be finding / to find repeatedly / to be in the process of finding

In this sentence, the speaker means:

• I can’t find it
• meaning I’m unable to locate it

That idea usually uses the perfective verb:

• ne mogu da nađem

Using nalazim here would sound unnatural in this context.

Here pasoš is in the accusative case, because it is the direct object of nosim.

However, for many masculine inanimate nouns, the accusative looks the same as the nominative.

So:

• pasoš = nominative
• pasoš = accusative

That is why the form does not change.

Later, the same object is replaced by the accusative pronoun:

• ga

So the grammar is consistent:

• nosim pasoš
• ne mogu da ga nađem

Yes, you can. Both are possible.

• ne mogu da nađem
• ne mogu naći

Both mean I can’t find.

However, da + present is extremely common and often sounds more natural in everyday Serbian. The infinitive version is also correct, but in many contexts it can sound a bit more formal, literary, or regional depending on the speaker.

For a learner, ne mogu da nađem is a very safe and natural choice.

Because in Serbian, ne is the negative particle, and with most verbs it is written separately:

• ne mogu = I cannot
• ne znam = I don’t know
• ne idem = I’m not going

So:

• mogu = I can
• ne mogu = I can’t

A few forms in Serbian are written together, but with ordinary present-tense verbs like this, ne is separate.

Sada means now.

So:

• ali ga sada ne mogu da nađem = but I can’t find it now

It emphasizes the current situation: the speaker is saying that although they need the passport when traveling, right now they are unable to locate it.

You could omit it:

• ali ga ne mogu da nađem

That would still mean:

• but I can’t find it

Adding sada just makes it more specific.

Yes, mostly.

• sada = now
• sad = now

Sad is just a shorter, very common conversational form.

So both are natural:

• ali ga sada ne mogu da nađem
• ali ga sad ne mogu da nađem

A rough literal breakdown is:

• Moram = I must
• da nosim = to carry / to have with me
• pasoš = passport
• kada = when
• putujem = I travel
• ali = but
• ga = it
• sada = now
• ne mogu = I cannot
• da nađem = to find

So a very literal version would be:

• I must to-carry passport when I-travel, but it now I-cannot to-find.

Of course, natural English is:

• I have to carry a passport when I travel, but I can’t find it now.

Yes, it sounds natural.

A Serbian speaker would easily understand it, and the structure is normal:

• Moram da...
• kada putujem
• ali ga sada ne mogu da nađem

You might also hear small everyday variations such as:

• Moram da nosim pasoš kad putujem, ali ga sad ne mogu da nađem.

That version is a bit more conversational, but the meaning is the same.