Az ügyintéző ellenőrzi a személyazonosságot.

Hungarian has two forms of the definite article: a and az.

• Use az before a vowel sound.
• Use a before a consonant sound.

So:

• az ügyintéző because ügyintéző begins with a vowel sound
• a személyazonosságot because személyazonosságot begins with sz, which is a consonant sound

This works a lot like a/an in English, except Hungarian does it with the definite article the.

Because this sentence uses the definite conjugation.

The dictionary form is ellenőriz = to check / checks.
But Hungarian verbs change depending on whether the object is definite or indefinite.

Here the object is a személyazonosságot = the identity, which is definite, so Hungarian uses the definite form:

• ellenőrzi = he/she checks it / checks the specific thing

Compare:

• ellenőriz egy adatot = checks a piece of data / some data → indefinite object
• ellenőrzi az adatot = checks the data → definite object

So ellenőrzi is the correct 3rd person singular present-tense form here.

It marks the direct object of the sentence.

The base noun is személyazonosság.
When it becomes the thing being checked, Hungarian adds the accusative ending:

• személyazonosság = identity
• személyazonosságot = identity, as the direct object

The key object marker is -t.
The -o- is a linking vowel that makes the word easier to pronounce and follows Hungarian vowel-harmony patterns.

So in this sentence, a személyazonosságot is the thing the clerk is checking.

Neither. Hungarian does not have grammatical gender like many European languages do.

So ügyintéző can refer to:

• a male clerk/administrator
• a female clerk/administrator

The verb also does not change for he versus she. Hungarian usually leaves gender unspecified unless the context makes it clear.

Yes. It is a formed word made from recognizable parts:

• ügy = matter, case, affair
• intéz = to handle, arrange, manage
• -ő = a suffix that can make an agent noun, meaning the person who does the action

So ügyintéző is literally something like case-handler or person who handles matters. In natural English, that often becomes clerk, administrator, caseworker, or official, depending on context.

No. Hungarian word order is fairly flexible, and it often reflects emphasis rather than strict grammatical roles.

This sentence:

• Az ügyintéző ellenőrzi a személyazonosságot.

is a neutral, straightforward statement: The clerk checks the identity.

Because Hungarian marks roles with endings and verb forms, you can move things around to change the focus:

• A személyazonosságot az ügyintéző ellenőrzi.
  This puts more attention on the identity or on the fact that it is the clerk who checks it.

So the given order is natural and neutral, but not the only possible order.

Because Hungarian often leaves subject pronouns out when they are not needed.

In this sentence, the subject is already stated explicitly as az ügyintéző, so adding a separate pronoun would be unnecessary.

More generally, Hungarian verbs already show person and number, so pronouns are often omitted:

• ellenőrzöm = I check
• ellenőrzöd = you check
• ellenőrzi = he/she checks

Hungarian is therefore much more comfortable than English with leaving pronouns unstated.

Yes. Hungarian very often forms long compound words.

személyazonosság contains:

• személy = person
• azonosság = identity, sameness

Together they mean identity in the sense of a person’s identity.

So Hungarian often expresses ideas in one long word where English might use a shorter simple noun or a noun phrase.

A few key pronunciation points:

• sz is pronounced like English s
• plain s in Hungarian is pronounced like English sh
• gy is a single consonant, somewhat like a soft dy
• ü and ő are rounded vowels that English does not have exactly

Useful approximations:

• az ügyintéző ≈ az udy-in-TAY-zuh
• ellenőrzi ≈ EL-leh-noer-zee
• a személyazonosságot ≈ aw seh-MAY-yah-zoh-noh-shaa-got

These are only rough English-style approximations, but they can help you get started.

Not naturally in normal Hungarian here.

This sentence refers to a specific clerk and a specific identity, so the definite articles are expected:

• az ügyintéző
• a személyazonosságot

Leaving them out would sound unnatural or ungrammatical in an ordinary full sentence.

So Hungarian uses the definite article here much as English uses the.