Die koorrepetisie begin vandag.

Here die is the definite article, meaning the.

It is not pronounced like the English word die. In Afrikaans, die is pronounced roughly like dee.

A useful thing to remember:

• die is used for all genders
• die can also be used with plural nouns

So Afrikaans does not have separate words like the for masculine/feminine/neuter nouns.

Afrikaans very often writes compound nouns as one word.

So:

• koor = choir
• repetisie = rehearsal

Together they become:

• koorrepetisie = choir rehearsal

This is very normal in Afrikaans, and it is similar to how Dutch and German often build long compound words.

Because it is made from two words:

• koor
• repetisie

The first word ends in r, and the second word begins with r, so when they join, you get rr:

• koor + repetisie = koorrepetisie

This is just the natural result of compounding the two words.

In Afrikaans, verbs do not usually change form in the present tense depending on the subject.

So you get:

• ek begin = I begin
• jy begin = you begin
• hy begin = he begins
• ons begin = we begin

The verb stays begin in all these cases. This is much simpler than English.

Formally, it is present tense: begin.

But in Afrikaans, just like in English, the present tense can be used for something happening in the near future when there is a time word such as vandag.

So Die koorrepetisie begin vandag means the rehearsal starts today, even though the verb is in the present form.

If you wanted a more explicitly future form, you could say something like:

• Die koorrepetisie sal vandag begin.

But the original sentence is very natural.

Because that is a normal place for a time expression in a simple Afrikaans main clause.

The basic pattern here is:

• subject + verb + time expression

So:

• Die koorrepetisie = subject
• begin = verb
• vandag = time expression

This word order is natural and common.

Yes. You can also say:

• Vandag begin die koorrepetisie.

That is also correct.

When Afrikaans puts something else first in a main clause, the verb still stays in second position. So after Vandag, the verb begin comes immediately, and then the subject follows.

That is an important Afrikaans word-order rule.

You look mainly at the noun form and the context.

Here koorrepetisie is singular. If it were plural, it would usually be:

• koorrepetisies

So:

• Die koorrepetisie begin vandag. = The choir rehearsal starts today.
• Die koorrepetisies begin vandag. = The choir rehearsals start today.

Notice that die stays the same, and begin also stays the same.

Both are fine in English, and both match the Afrikaans sentence well.

• begins today is a very direct match for begin vandag
• starts today is often a little more natural in everyday English

So the Afrikaans sentence itself is straightforward and neutral. It does not sound unusually formal or unusual.