Sofie verspreekt zich op de feestlocatie.

Because zich verspreken is a reflexive verb in Dutch. The basic dictionary form is zich verspreken, not just verspreken.

Here, zich does not mean herself in a literal, emphatic way. It is simply part of the verb construction.

Reflexive forms:

• ik verspreek me
• jij verspreekt je
• hij/zij verspreekt zich
• wij verspreken ons

So with Sofie (third person singular), you use zich.

It usually means to misspeak, to make a slip of the tongue, or sometimes to let something slip accidentally.

So it can mean:

• saying the wrong word by accident
• revealing something unintentionally
• speaking incorrectly without meaning to

The exact nuance depends on context. In many situations, it is very close to to make a slip of the tongue.

No. Verspreken is not separable.

The prefix ver- is normally inseparable in Dutch. That is why you get:

• Sofie verspreekt zich
• not Sofie spreekt zich ver

This also affects the past participle:

• zich versproken
• not zich geversproken

Example:

• Sofie heeft zich versproken.

In a normal Dutch main clause, the finite verb usually comes in second position. That is the well-known V2 rule.

So:

• Sofie = first element
• verspreekt = finite verb in second position
• zich comes after that

That is why the sentence is:

• Sofie verspreekt zich op de feestlocatie.

In a subordinate clause, the order changes:

• Ik denk dat Sofie zich op de feestlocatie verspreekt.

There, verspreekt moves to the end.

Yes, op often means on, but in Dutch it can also mean at, especially with events, places, institutions, or locations in certain contexts.

Here, op de feestlocatie means something like:

• at the party venue
• at the event location

Dutch uses prepositions a bit differently from English, so you should not always translate op literally as on.

Compare:

• op school = at school
• op kantoor = at the office
• op het feest = at the party

Often, yes.

Op de feestlocatie is understandable, but it sounds a bit more specific, formal, or practical, as if you are focusing on the venue itself.

In everyday speech, many speakers would more naturally say:

• Sofie verspreekt zich op het feest.

That means at the party rather than at the party venue.

So:

• op het feest = more everyday
• op de feestlocatie = more venue-focused or formal

Because feestlocatie is a compound noun, and in Dutch the article of a compound is determined by the last part of the word.

The last part is locatie, and locatie is a de-word:

• de locatie

So the compound is:

• de feestlocatie

This is a useful rule:

• het feest
• de locatie
• therefore: de feestlocatie

Because Dutch normally writes compound nouns as one word.

So:

• feest
  • locatie → feestlocatie

This is very common in Dutch. English often uses separate words where Dutch prefers a single compound word.

More examples:

• huisdeur = house door / front door
• treinstation = train station
• feestzaal = party hall

There are two common past forms:

Simple past

• Sofie versprak zich op de feestlocatie.

Present perfect

• Sofie heeft zich op de feestlocatie versproken.

Notice:

• the reflexive pronoun stays there
• the past participle is versproken
• there is no ge- because ver- is an inseparable prefix

No, not in this sentence.

With a reflexive verb like zich verspreken, you need the reflexive pronoun:

• Sofie verspreekt zich.

If you said Sofie verspreekt haar, that would sound wrong here, because haar means her, as an object, not a reflexive part of the verb.

So for this verb, use:

• me / je / zich / ons / je / zich

Then the finite verb still has to stay in second position, so the subject moves after it:

• Op de feestlocatie verspreekt Sofie zich.

That is correct Dutch word order.

So Dutch keeps the verb-second rule even when you change what comes first in the sentence.