Receptionisten siger, at medlemskabet stadig er gyldigt.

Because Danish usually adds the definite article to the end of the noun.

• en receptionist = a receptionist
• receptionisten = the receptionist

This is very common in Danish. Instead of putting a separate word like the in front, Danish often attaches it as an ending.

For the same reason: it is the definite form.

• et medlemskab = a membership
• medlemskabet = the membership

The ending -et shows that medlemskab is a neuter noun (et-word). So medlemskabet literally means the membership.

At means that when it introduces a clause.

So:

• Receptionisten siger = The receptionist says
• at medlemskabet stadig er gyldigt = that the membership is still valid

In English, that is sometimes omitted: The receptionist says the membership is still valid. In Danish, at is very commonly included in this kind of sentence.

Because this is a subordinate clause introduced by at, and Danish often changes word order in subordinate clauses.

Main clause:

• Medlemskabet er stadig gyldigt.

Subordinate clause:

• ... at medlemskabet stadig er gyldigt.

A useful rule is:

• In many subordinate clauses, words like ikke, stadig, ofte, etc. come before the verb.

So:

• Han siger, at det ikke er muligt.
• Hun mener, at det stadig er åbent.

This is a very important Danish word-order pattern.

Stadig usually means still.

In this sentence, it tells us that the membership continues to be valid.

Placement depends on clause type:

• Main clause: Medlemskabet er stadig gyldigt
• Subordinate clause: ... at medlemskabet stadig er gyldigt

So the meaning stays the same, but the position changes because of Danish word order rules.

Because gyldig changes form to match the noun it describes.

• et medlemskab is a neuter noun
• adjectives describing neuter singular nouns usually take -t

So:

• et gyldigt medlemskab = a valid membership
• medlemskabet er gyldigt = the membership is valid

Compare:

• en gyldig billet = a valid ticket
• et gyldigt medlemskab = a valid membership

This is a standard adjective agreement pattern in Danish.

It is an adjective used after the verb er.

In medlemskabet er gyldigt, the structure is:

• medlemskabet = subject
• er = is
• gyldigt = adjective describing the subject

This is similar to English:

• The membership is valid

So gyldigt is not an adverb here; it is an adjective agreeing with medlemskab.

Because Danish usually expresses definiteness by adding it to the noun itself.

So instead of:

• the membership

Danish uses:

• medlemskabet

The same happens with many nouns:

• bogen = the book
• huset = the house
• billetten = the ticket

This is one of the biggest structural differences from English.

In standard written Danish, at is normally used here, so Receptionisten siger, at medlemskabet stadig er gyldigt is the safest and most natural form.

In informal speech, people may sometimes omit at, but learners should usually keep it. It sounds clearer and more correct, especially in writing.

If you turn the second part into a full main clause, the word order changes:

• Medlemskabet er stadig gyldigt.

But in the full sentence:

• Receptionisten siger, at medlemskabet stadig er gyldigt.

So this pair is very useful to compare:

• Main clause: Medlemskabet er stadig gyldigt
• Subordinate clause: at medlemskabet stadig er gyldigt

The main difference is the position of stadig.

Here is a simple breakdown:

• Receptionisten = the receptionist
• siger = says
• at = that
• medlemskabet = the membership
• stadig = still
• er = is
• gyldigt = valid

So the structure is:

• main clause: Receptionisten siger
• subordinate clause: at medlemskabet stadig er gyldigt

This is a very common Danish sentence pattern: someone says/thinks/knows that...