Wij hebben Sofie ingelicht, voor het geval Tom zich verspreekt.

This is the Dutch perfect tense: auxiliary hebben + past participle ingelicht.

The basic verb is inlichten = to inform. In the perfect tense, Dutch usually puts:

• the finite auxiliary in second position: hebben
• the past participle near the end of the clause: ingelicht

So:

• Wij lichten Sofie in = We inform Sofie
• Wij hebben Sofie ingelicht = We have informed Sofie

Because inlichten is a separable verb, its parts split in some forms, but in the participle they come back together as ingelicht.

Because inlichten normally takes hebben in the perfect tense.

A good rule of thumb is:

• hebben is used with most verbs, especially action verbs with a direct object
• zijn is used with a smaller group of verbs, often involving movement or change of state

Here, Sofie is the direct object of inlichten, so hebben is the expected auxiliary:

• Wij hebben Sofie ingelicht

Not:

• Wij zijn Sofie ingelicht

In a Dutch main clause with an auxiliary and a participle, the participle usually goes toward the end of the clause, while objects often come before it.

So the normal order is:

• Wij = subject
• hebben = finite verb
• Sofie = object
• ingelicht = participle

That gives:

• Wij hebben Sofie ingelicht

This is very typical Dutch word order.

Both wij and we mean we.

The difference is mostly one of style and emphasis:

• we is more common in everyday speech
• wij can sound a bit more formal or slightly more emphatic

So both of these are possible:

• Wij hebben Sofie ingelicht
• We hebben Sofie ingelicht

The sentence with wij is completely normal.

Voor het geval is a fixed expression meaning in case or for the eventuality that.

It introduces something that might happen, and the main clause describes a precaution taken beforehand.

So the logic is:

• We informed Sofie
• as a precaution
• in case Tom says something he should not say

It is not saying that Tom already did it. It presents it as a possible situation.

Yes. Both are possible:

• voor het geval Tom zich verspreekt
• voor het geval dat Tom zich verspreekt

The dat is often optional here. Adding it can make the clause feel a little more explicit or slightly heavier, but both versions are natural Dutch.

Because the second part functions as a subordinate clause or clause-like addition explaining the precaution.

Dutch commonly places a comma between:

• the main clause: Wij hebben Sofie ingelicht
• and the following subordinate part: voor het geval Tom zich verspreekt

So the comma is standard and helps show the structure of the sentence.

Because voor het geval (dat) introduces a subordinate clause, and in Dutch subordinate clauses the finite verb usually goes to the end.

Compare:

Main clause:

• Tom verspreekt zich

Subordinate clause:

• ... voor het geval Tom zich verspreekt

So in the subordinate clause:

• Tom = subject
• zich = reflexive pronoun
• verspreekt = finite verb at the end

This verb-final pattern is one of the most important Dutch word-order rules.

Because zich verspreken is a reflexive verb in Dutch.

It means something like:

• to misspeak
• to let something slip
• to say something by accident

The reflexive pronoun is part of the verb. It is not optional here.

With different subjects, the reflexive pronoun changes:

• ik verspreek me
• jij verspreekt je
• hij verspreekt zich
• Tom verspreekt zich

So in this sentence, zich refers back to Tom.

Because Dutch often uses the present tense for future situations, especially after conjunctions like als, wanneer, zodra, and voor het geval.

So:

• voor het geval Tom zich verspreekt

means:

• in case Tom lets something slip
• in case Tom misspeaks

Even though the slipping-up would happen later, the present tense is the normal choice.

Using a future form such as zal is usually unnecessary here and often sounds less natural.