A fordító a diáknak segít a tanteremben.

Because segít normally takes the person being helped in the dative case, not as a direct object.

• diák = student
• diáknak = to the student

So in Hungarian, you do not usually say the equivalent of helps the student with a direct object form. You say something more like helps to the student, grammatically speaking.

The ending here is:

• -nak / -nek = dative ending

Which version appears depends on vowel harmony. Since diák has back vowels, it takes -nak.

Because segít is being used without a direct object.

Hungarian has two main verb conjugation patterns:

• indefinite conjugation
• definite conjugation

The form segíti would be the definite form, typically used when there is a definite direct object.

But in this sentence, a diáknak is not a direct object. It is a dative complement required by segít. So the verb stays in the indefinite form:

• segít = he/she helps

This is a very common point for English speakers, because English says help someone, but Hungarian structures it differently.

Grammatically, it means helps the student, but the structure is:

• a diáknak = to the student
• segít = helps

So the verb segít works a bit like verbs that take an indirect object in English.

A useful pattern to remember is:

• segít valakinek = help someone
• literally: help to someone

Examples:

• Segítek a barátomnak. = I help my friend.
• Az orvos segít a betegnek. = The doctor helps the patient.

A tanteremben means in the classroom.

The ending -ban / -ben means in or inside.

• tanterem = classroom
• tanteremben = in the classroom

Again, vowel harmony determines the form:

• back vowels usually take -ban
• front vowels usually take -ben

Since tanterem has front vowels, it takes -ben.

Hungarian uses the definite article very regularly, often in places where English also uses the.

In this sentence:

• A fordító = the translator
• a diáknak = to the student
• a tanteremben = in the classroom

So each noun phrase has its own definite article.

Hungarian has two forms of the:

• a before a consonant sound
• az before a vowel sound

So:

• a fordító
• a diáknak
• a tanteremben

but:

• az asztal
• az ember

Because Hungarian marks grammatical roles with endings, not mainly with word order.

Here is the breakdown:

• A fordító = subject, in the basic form
• a diáknak = dative, marked by -nak
• segít = helps

So the translator is the subject, and the student is the person receiving the help.

English relies more on word order:

• The translator helps the student

Hungarian often makes this clear through case endings instead:

• bare noun phrase = often subject
• -nak/-nek = dative

Yes, the word order can be changed, and Hungarian word order is more flexible than English word order.

The sentence as given:

• A fordító a diáknak segít a tanteremben.

is a fairly neutral way to say it.

But other orders are possible, depending on what you want to emphasize. For example:

• A tanteremben a fordító a diáknak segít.
  This puts more attention on in the classroom.

• A diáknak a fordító segít a tanteremben.
  This can put more attention on the student.

The endings still tell you who is doing what, so changing the order does not automatically change the core meaning.

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

The verb form segít already tells you it is third person singular:

• he helps
• she helps
• it helps

So Hungarian does not need to say ő unless there is special emphasis or contrast.

That is why:

• A fordító a diáknak segít...

already naturally means:

• The translator helps the student...

without any extra pronoun.

Usually it describes the location of the whole situation: the helping takes place in the classroom.

In practice, that often means the translator and the student are both there, but the exact interpretation can depend on context.

So the most natural reading is:

• The translator helps the student in the classroom.

If you needed to make the relationship more explicit, Hungarian could do that in other ways, but in this sentence a tanteremben is simply the location of the event.

This is a useful vocabulary question.

• fordító usually means translator
• tolmács usually means interpreter

So:

• a fordító works with written language
• a tolmács works with spoken language

Learners sometimes confuse these because English speakers may use translator loosely in everyday speech. But in standard Hungarian, the distinction is normally kept.

A simple approximate pronunciation is:

aw FOR-dee-toh aw DEE-ahk-nawk seh-GEET aw TAN-teh-rem-ben

A few helpful notes:

• á is a long vowel, roughly like a in father
• í is a long ee
• stress in Hungarian is almost always on the first syllable of each word

So:

• A FORdító
• a DIÁKnak
• SEgít
• a TANteremben

The written accents matter: they show vowel length, which is important in Hungarian.

Yes. That is also correct.

• A fordító a diáknak segít a tanteremben
• A fordító segít a diáknak a tanteremben

Both are possible.

The difference is mostly one of rhythm, information structure, and emphasis, not basic meaning. Hungarian often allows this kind of variation.

For a learner, the important thing is to remember the structure:

• segít valakinek
• in a place = -ban / -ben

So as long as the case endings are correct, several word orders can work.