Ons ventileer die kamer.

Ons means we.

It is the first-person plural subject pronoun, used when the speaker includes themselves and at least one other person.

Examples:

• Ons werk. = We work.
• Ons leer Afrikaans. = We learn Afrikaans.

In Afrikaans, verbs usually do not change form for different subjects in the present tense.

So you get:

• Ek ventileer
• Jy ventileer
• Hy/Sy ventileer
• Ons ventileer

This is much simpler than English, where you have I work but he works. In Afrikaans, the verb usually stays the same.

It can mean either one, depending on context.

The simple present in Afrikaans often covers both:

• a general action: We ventilate the room
• an action happening now: We are ventilating the room

If you want to make the ongoing sense especially clear, Afrikaans can also use other structures, but the plain present tense is very common.

Die means the.

Afrikaans has just one common definite article: die. It is used with:

• singular nouns
• plural nouns

So:

• die kamer = the room
• die kamers = the rooms

Unlike some other languages, Afrikaans does not change the for gender.

Because Afrikaans does not have grammatical gender the way many European languages do.

That means nouns do not normally take different articles depending on whether they are masculine, feminine, or neuter. You simply use die for the.

So:

• die man = the man
• die vrou = the woman
• die huis = the house

All use die.

Yes, in this simple main clause it is very similar to English:

Ons + ventileer + die kamer
subject + verb + object

So the structure is:

• Ons = subject
• ventileer = verb
• die kamer = direct object

Afrikaans often looks quite familiar to English speakers in basic statements like this.

Not as a normal statement.

Ventileer ons die kamer? would sound like a question, roughly Are we ventilating the room? or Do we ventilate the room?

In Afrikaans main clauses, the finite verb is typically in the second position. When the subject comes first, you get:

• Ons ventileer die kamer.

If the verb comes first, that usually signals a question:

• Ventileer ons die kamer?

Yes. Ventileer is a perfectly normal Afrikaans verb.

Afrikaans has many words that look familiar to English speakers, especially in technical or formal vocabulary. Even if a word resembles English, it still follows Afrikaans grammar.

For example:

• Ek ventileer
• Ons ventileer
• Hulle ventileer

So it may look familiar, but it behaves like an Afrikaans verb.

A rough English-friendly guide is:

• ventileer: ven-ti-LEER
  The last part -leer is stressed.

• kamer: KAA-mer
  The first syllable is stressed.

A few pronunciation tips:

• v in Afrikaans is often pronounced a bit like an English f or a soft v, depending on speaker and region.
• r is usually pronounced more clearly than in many English accents.
• The a in kamer is not the same as the a in English camera.

Kamer is a noun meaning room.

In this sentence, it is the direct object of the verb ventileer—it is the thing being ventilated.

You can also see it in other combinations:

• 'n kamer = a room
• die kamer = the room
• kamers = rooms
• die kamers = the rooms

Yes, if you meant a room instead of the room, you would use 'n.

So:

• Ons ventileer die kamer. = We ventilate the room.
• Ons ventileer 'n kamer. = We ventilate a room.

A useful note: 'n is the indefinite article and is usually not stressed in speech.

The negative is:

Ons ventileer nie die kamer nie.

Afrikaans commonly uses double nie in standard negation:

• one nie after the verb phrase
• one nie at the end of the clause

So:

• Ons ventileer die kamer.
• Ons ventileer nie die kamer nie.

This double-negative pattern is a very important feature of Afrikaans grammar.