Kunden udfylder klageformularen med henblik på at sende den til klagenævnet.

Because they are definite singular nouns of common gender.

• en kunde = a customer

• kunden = the customer

• en klageformular = a complaint form
• klageformularen = the complaint form

In Danish, the definite article is usually added to the end of the noun, instead of being a separate word like English the.

So:

• kunde → kunden
• klageformular → klageformularen

This is one of the first big differences from English.

Because nævn is a neuter noun, so its definite singular ending is -et, not -en.

• et nævn = a board/tribunal
• nævnet = the board/tribunal

Since klagenævn is a compound noun based on nævn, it keeps the same gender:

• et klagenævn = a complaints board/appeals tribunal
• klagenævnet = the complaints board/appeals tribunal

So:

• common gender nouns often take -en
• neuter nouns often take -et

Udfylder means fills in or fills out.

The base verb is at udfylde = to fill in/out.

In the sentence:

• Kunden udfylder klageformularen = The customer fills out the complaint form

English often uses a verb + particle, like fill out or fill in, but Danish uses the single verb udfylde.

Because udfylder is the present tense form, while udfylde is the infinitive.

• at udfylde = to fill out
• udfylder = fills out / is filling out

In Danish, present tense often ends in -r:

• at sende → sender
• at udfylde → udfylder

So Kunden udfylder ... means The customer fills out ... or The customer is filling out ..., depending on context.

Med henblik på is a formal expression meaning:

• with a view to
• for the purpose of
• with the intention of

So:

• med henblik på at sende den til klagenævnet = for the purpose of sending it to the complaints board

This expression is more formal than everyday Danish. In ordinary speech, people might often use something simpler depending on the context.

Because sende is being used as an infinitive: to send.

• at sende = to send

After med henblik på, Danish commonly uses at + infinitive to express purpose:

• med henblik på at sende den = with a view to sending it

So the structure is:

• med henblik på
  • at + infinitive

Even though English often uses -ing after for the purpose of, Danish uses the infinitive with at here.

Den refers back to klageformularen.

Since klageformular is a common gender noun (en klageformular), the pronoun is den:

• en klageformular → den

If the noun were neuter (et noun), Danish would normally use det instead.

So here:

• at sende den til klagenævnet = to send it to the complaints board

And den means the complaint form, not the customer or the board.

Because den does not refer to kunden here. It refers to klageformularen.

The sentence means:

• The customer fills out the complaint form in order to send it to the complaints board.

So the thing being sent is the form, not the customer.

That is why Danish uses:

• den = it (referring to klageformularen)

If the pronoun referred to the customer, the meaning would be very different.

Because Danish usually puts the definite article at the end of the noun instead of using a separate word.

Compare:

• English: the customer

• Danish: kunden

• English: the complaint form

• Danish: klageformularen

• English: the complaints board
• Danish: klagenævnet

This is completely normal in Danish. A separate determiner like den/det/de can appear in some cases, especially with adjectives, but not in this simple structure.

For example:

• klagenævnet = the complaints board
• but det danske klagenævn = the Danish complaints board

Yes. Danish very often forms compound nouns as a single word.

Here:

• klage = complaint
• formular = form
• klageformular = complaint form

Then the definite ending is added:

• klageformularen = the complaint form

The same happens with:

• klage
  • nævn = klagenævn
• klagenævnet = the complaints board

For English speakers, one common challenge is remembering that what looks like two words in English is often one word in Danish.

The sentence follows normal Danish main-clause word order:

• Kunden = subject
• udfylder = verb
• klageformularen = object
• med henblik på at sende den til klagenævnet = purpose phrase

So the pattern is basically:

Subject + verb + object + adverbial/purpose phrase

That is very similar to English here:

The customer + fills out + the complaint form + in order to send it to the complaints board

Yes. Danish can move that phrase to the front, but then the word order changes because Danish is a V2 language in main clauses.

For example:

• Med henblik på at sende den til klagenævnet udfylder kunden klageformularen.

Notice what happens:

• the fronted phrase comes first
• the finite verb udfylder still stays in second position
• the subject kunden comes after the verb

That word order is very Danish. In the original sentence, though, the neutral order is easier and more natural for learners.

It is understandable, but it sounds fairly formal, administrative, or bureaucratic.

You are likely to see it in:

• official letters
• legal texts
• instructions
• formal written communication

A simpler everyday alternative might depend on the exact context, but med henblik på definitely has a formal tone. So it is useful to recognize, especially in public or official Danish.

A rough approximation is:

KUN-den OOF-hyl-er KLAGE-for-moo-len med HEN-blik po at SEN-ne den til KLA-ge-nev-net

A few helpful notes:

• udfylder has a soft Danish d after the initial vowel, which English speakers often find tricky.
• på has an å sound, roughly like the vowel in law for many learners.
• nævn contains the æ vowel, which is somewhat like the vowel in cat, but not exactly.

This is only a rough guide, but it can help you recognize the sentence when you hear it.