Die ouderdom staan op die vorm.

Because die is the Afrikaans definite article, meaning the.

So in this sentence:

• die ouderdom = the age
• die vorm = the form

Afrikaans does not change the article for gender, number, or case the way some other languages do. The same word die is used for most definite nouns.

In this sentence, die means the.

Afrikaans die is usually the definite article:

• die boek = the book
• die kind = the child

It can also appear in other uses in different contexts, but here it is simply the.

Ouderdom means age.

It is related to:

• oud = old
• -dom = a noun-forming ending, somewhat like -dom in English words such as freedom or kingdom, though not always used in exactly the same way

So ouderdom is the noun age.

Yes, staan literally means to stand, but Afrikaans often uses it in a wider way than English does.

In sentences like this, staan can mean that something is written, printed, or appears somewhere.

So Die ouderdom staan op die vorm can mean something like:

• The age is on the form
• The age appears on the form
• The age is written on the form

This is very natural in Afrikaans, even though English would usually not say the age stands on the form.

Because op means on, and with documents, pages, forms, and pieces of paper, Afrikaans often uses op the same way English uses on:

• op die papier = on the paper
• op die bladsy = on the page
• op die vorm = on the form

So if information is written on a form, op is the natural preposition.

Mostly yes, in this simple sentence.

Afrikaans:

• Die ouderdom (subject)
• staan (verb)
• op die vorm (prepositional phrase)

English:

• The age
• is / appears
• on the form

Afrikaans is a verb-second language in main clauses, and here the normal order is:

Subject + verb + rest

So this sentence follows a very common basic pattern.

Yes, that would be understandable, and it can work in some contexts.

But staan op die vorm is often more idiomatic when talking about information that is written or printed on a document.

Compare the nuance:

• is op die vorm = is on the form
• staan op die vorm = is written / appears on the form

So staan sounds especially natural when referring to text or information.

Yes. Vorm is a noun meaning form, and it is clearly related to the English word form.

Depending on context, vorm can mean:

• a document or application form
• shape or form in a more general sense

In this sentence, it means a document form.

A rough guide for English speakers is:

OW-der-dom

More roughly:

• ou sounds somewhat like ow in cow
• der has a short, light vowel
• dom sounds like dom in kingdom, but with a clear o

The r in Afrikaans may sound different from many English r sounds, depending on the speaker.

No. Afrikaans does not use grammatical gender the way languages like German or Dutch do.

That is why the article stays the same:

• die ouderdom
• die vorm

You do not need to learn separate words for the based on masculine, feminine, or neuter nouns.

It can be used either way, depending on meaning.

In this sentence, die ouderdom means a specific age, so the age makes sense.

But in other contexts, you might see ouderdom without an article, especially when speaking more generally:

• Ouderdom is net 'n getal. = Age is just a number.

So whether you use die depends on whether you mean age in general or a specific age.