Daar is vier kamers in die huis.

Because daar is is the normal Afrikaans way to say there is or there are when you mean that something exists or is present.

So:

• Daar is vier kamers in die huis. = There are four rooms in the house.

Here, daar does not mainly mean a physical place like English over there. In this sentence, it is part of the fixed existential expression daar is.

Afrikaans uses is in this kind of sentence whether the noun after it is singular or plural.

So you get:

• Daar is een kamer. = There is one room.
• Daar is vier kamers. = There are four rooms.

English changes between is and are, but Afrikaans usually just uses is here.

No. Daar can mean different things depending on context.

1. Location

   • Die boek is daar. = The book is there.

2. Existence / there is, there are

   • Daar is vier kamers in die huis. = There are four rooms in the house.

So in your sentence, daar is not really pointing to a place. It helps form the idea of there are.

Because vier kamers means four rooms in an indefinite, general sense.

After a number, Afrikaans normally does not use the definite article unless you specifically mean a particular set:

• vier kamers = four rooms
• die vier kamers = the four rooms

In your sentence, the meaning is simply that the house contains four rooms, not that we are talking about a specific already-known set of rooms.

The singular is kamer and the plural is kamers.

So:

• kamer = room
• kamers = rooms

Many Afrikaans nouns form the plural with -s or -e, depending on the word. Kamer takes -s.

Yes. Die is the definite article, meaning the.

So:

• die huis = the house

A useful thing for English speakers is that Afrikaans does not have different words for the based on gender. It is just die for singular and plural nouns in ordinary use.

Sometimes, in other contexts, die can function a bit like those or refer back to something already mentioned. But in a simple phrase like die huis, it just means the house.

So in this sentence, you should read die as the ordinary definite article the.

It follows normal Afrikaans word order. The sentence structure is:

• Daar is
  • quantity + noun + place phrase

So:

• Daar is = there are
• vier kamers = four rooms
• in die huis = in the house

Putting the location at the end is very natural here.

It is possible in some contexts, especially if you want to emphasize in the house, but it is less neutral.

The most natural basic version is:

• Daar is vier kamers in die huis.

That is the standard way a learner should say it unless there is a special emphasis.

Because English also usually does not use a/an with plural count nouns in this kind of sentence.

Compare:

• a room = 'n kamer
• four rooms = vier kamers

So once you have a number like vier, you do not use 'n.

The normal Afrikaans negative is:

• Daar is nie vier kamers in die huis nie.

Afrikaans commonly uses double negation:

• first nie after the verb phrase or key part
• second nie at the end of the clause

That is one of the most important patterns in Afrikaans.

You would usually invert the word order:

• Is daar vier kamers in die huis? = Are there four rooms in the house?

This is very common in Afrikaans yes/no questions: the verb comes first.

The hardest part for many English speakers is ui in huis.

• huis sounds roughly like the Dutch/Afrikaans ui vowel plus s
• It does not sound exactly like English house, even though the words are related

A rough learner-friendly approximation is something like hays or hoys, but neither is perfect. The real Afrikaans ui is a distinct vowel sound you will want to hear from native audio.

Yes, in speech and informal writing you may see or hear:

• Daar's vier kamers in die huis.

That is just a contraction of Daar is.

But for learning and careful writing, Daar is is the safest full form to use.