Kad čitam naglas, lakše čujem gdje nedostaje zarez ili upitnik.

Yes. Kad means when here.

In this sentence, Kad čitam naglas means When I read aloud.

A learner should also know that Croatian often uses both kad and kada for when.

• kad is very common in everyday speech and writing
• kada is a bit fuller/more formal, but both are normal

So you could also say:

Kada čitam naglas, lakše čujem gdje nedostaje zarez ili upitnik.

The meaning stays the same.

Čitam is the 1st person singular present tense of čitati, which means to read.

So:

• čitati = to read
• čitam = I read / I am reading

Croatian present tense can cover both:

• I read
• I am reading

In this sentence, because of kad and the general meaning, čitam is best understood as when I read aloud in a habitual or repeated sense.

Croatian often leaves out subject pronouns when they are not needed.

The ending of the verb already tells you who the subject is:

• čitam = I read
• čitaš = you read
• čita = he/she/it reads

So ja is unnecessary here unless you want emphasis.

Compare:

• Kad čitam naglas... = normal, neutral
• Kad ja čitam naglas... = When I read aloud... with extra emphasis on I

English usually needs the pronoun, but Croatian often does not.

Naglas means aloud or out loud.

So:

• čitati naglas = to read aloud

Its position after the verb is very natural in Croatian:

• Kad čitam naglas...

You may also hear slightly different word orders in Croatian, but this one is the most straightforward and idiomatic.

Because Kad čitam naglas is a subordinate clause introducing the main clause.

Structure:

• Kad čitam naglas, = dependent clause
• lakše čujem... = main clause

Croatian punctuation usually places a comma between this kind of introductory subordinate clause and the main clause, just as English often does:

• When I read aloud, I hear more easily...

So the comma is expected here.

Lakše means more easily.

It is the comparative form of the adverb lako / lakše from the adjective family lak = easy.

So:

• lako = easily
• lakše = more easily

In this sentence:

• lakše čujem = I hear more easily

A more natural English translation might be:

• I can hear more easily
• It’s easier for me to hear

Čujem means I hear.

Croatian often uses the simple present where English might prefer something slightly expanded, like:

• I hear
• I can hear
• I’m better able to hear

So lakše čujem is perfectly natural Croatian.

If you said lakše mogu čuti, that would also be understandable, but it sounds a bit heavier and less natural here. The original sentence is smoother.

Yes, gdje literally means where.

Here it introduces the idea of identifying the place in the text where punctuation is missing:

• gdje nedostaje zarez ili upitnik = where a comma or question mark is missing

Even though this is not a physical place like Where is the book?, Croatian still uses gdje naturally for where in the text / at which point.

So the meaning is something like:

• I can hear more easily where a comma or question mark is missing

Nedostaje is the present tense of nedostajati, which means to be missing or to be lacking.

So:

• nedostaje zarez = a comma is missing
• nedostaje upitnik = a question mark is missing

This verb works a little differently from English. In Croatian, the thing that is missing is often the grammatical subject.

That is why:

• zarez is not treated like a direct object here
• it appears in the nominative, not the accusative

You can think of it as:

• A comma is missing rather than
• Something misses a comma

They are in the nominative singular because they function as the subject of nedostaje.

In other words:

• zarez nedostaje = the comma is missing
• upitnik nedostaje = the question mark is missing

That may feel unusual to an English speaker, because English does not show case this clearly. But in Croatian, with nedostajati, the missing thing is typically in the nominative.

So:

• gdje nedostaje zarez ili upitnik literally works like
• where a comma or a question mark is missing

Because the nouns are connected by ili, meaning or, not and.

The idea is that one or the other may be missing at a given point:

• a comma
• or a question mark

So singular nedostaje is natural.

If the sentence meant that both were missing together, Croatian would more likely use i (and) and probably plural agreement:

• nedostaju zarez i upitnik = the comma and question mark are missing

But with ili, singular is expected here.

Yes. Zarez is the standard Croatian word for comma.

Other common punctuation words:

• točka = period / full stop
• upitnik = question mark
• uskličnik = exclamation mark
• dvotočka = colon
• točka-zarez = semicolon

So in this sentence:

• zarez ili upitnik = a comma or a question mark

Yes. Upitnik means question mark, and it is related to the idea of a question.

It comes from the root seen in:

• upit = query / question
• pitati = to ask

So upitnik is the normal word for the punctuation mark ?

Croatian word order is fairly flexible, but the original order is very natural.

Original:

• Kad čitam naglas, lakše čujem gdje nedostaje zarez ili upitnik.

Possible variations can exist, for example for emphasis, but they may sound less neutral:

• Kad čitam naglas, gdje nedostaje zarez ili upitnik lakše čujem.
• Lakše čujem gdje nedostaje zarez ili upitnik kad čitam naglas.

These are possible in some contexts, but the original sentence is the clearest and most natural for general use.

Because Croatian uses the present tense for general truths, habits, and repeated actions, just like English often does.

So:

• Kad čitam naglas = When I read aloud
• lakše čujem = I hear more easily
• gdje nedostaje = where something is missing

This is not tied to one specific moment. It expresses a general pattern:

• whenever I read aloud, I notice missing punctuation more easily

That is why the present tense is completely natural here.

Yes, definitely.

In a sentence like this, kad can be understood as:

• when
• whenever

Because the sentence describes a repeated experience, English might even translate it more naturally as:

• Whenever I read aloud, I can hear more easily where a comma or question mark is missing.

So the Croatian form stays the same, while the best English translation depends on context.

Yes. In everyday speech, many speakers would say fali.

For example:

• Kad čitam naglas, lakše čujem gdje fali zarez ili upitnik.

That means the same thing: where a comma or question mark is missing.

The difference is mainly register:

• nedostaje = more standard, neutral, careful
• fali = common, conversational, less formal

So the original sentence sounds a bit more polished or standard.

Not literally in the physical sense of hearing a printed comma or question mark. It means that by reading aloud, the speaker can better notice where punctuation should be.

So čujem gdje nedostaje zarez ili upitnik means something like:

• I can hear where a comma or question mark is missing
• I can tell by sound where punctuation is missing

This is a very natural way to express the idea that reading aloud helps you detect punctuation problems.