Die ortodonsie is duur.

Die is the Afrikaans definite article, the equivalent of the.

A useful thing to remember is that Afrikaans uses die for:

• singular nouns
• plural nouns
• all genders

So unlike English, there is no separate the form to learn for different kinds of nouns.

No. In Afrikaans, die is usually pronounced roughly like dee.

So:

• die = dee
• not like English die

This is a very common beginner trap.

Afrikaans often adapts international words to a more phonetic spelling.

Here are some typical changes you can see:

• English th often becomes t
• English c can become s
• endings are often simplified to fit Afrikaans spelling patterns

So orthodontics becomes ortodonsie. It is still clearly related to the English word, just written in a more Afrikaans way.

It is treated as a singular, non-count noun here.

That matches the idea of a field, type of treatment, or area of medicine rather than individual items. English is actually similar in meaning, because orthodontics takes a singular verb:

• Orthodontics is expensive.

So even though the English word ends in -s, the idea is still grammatically singular.

Yes, in this sentence is is the verb to be, just like English is.

A very useful point: in the present tense, Afrikaans uses is with all persons:

• ek is = I am
• jy is = you are
• hy/sy is = he/she is
• ons is = we are
• julle is = you are
• hulle is = they are

So Afrikaans is simpler than English here.

Because this is a simple sentence with:

• subject: Die ortodonsie
• verb: is
• adjective/complement: duur

So the pattern is:

subject + is + adjective

That is actually the same basic order as English:

• The orthodontics is expensive
• Die ortodonsie is duur

Duur comes last simply because it is the final part of the statement.

Here, duur means expensive.

But duur can also be a verb in other sentences, meaning to last or to continue.

For example:

• Die ortodonsie is duur. = The orthodontics is expensive.
• Die les duur lank. = The lesson lasts a long time.

So the meaning depends on how the word is being used in the sentence.

Duur is not pronounced exactly like any normal English vowel.

Very roughly, it sounds something like düür, with a vowel similar to:

• German ü
• French u

There is no perfect English equivalent. Many beginners say something closer to deer, which may be understood, but it is not fully accurate.

The important thing is that the uu represents a long vowel sound, not the English oo of door or food.

In a yes/no question, Afrikaans usually puts the verb first.

So:

• Statement: Die ortodonsie is duur.
• Question: Is die ortodonsie duur?

That is very similar to English:

• Orthodontics is expensive.
• Is orthodontics expensive?

You use the Afrikaans negative pattern with nie ... nie:

Die ortodonsie is nie duur nie.

This literally looks like a double negative to an English speaker, but it is normal Afrikaans grammar.

A simple way to think about it is:

• first nie goes after the verb phrase
• second nie goes near the end of the clause

So:

• is duur → is nie duur nie

This is one of the most important sentence patterns in Afrikaans.