Koste is 'n belangrike faktor.

'n is the Afrikaans indefinite article, so it means a or an.

In speech, it is usually very weak and unstressed, like the a in about. So 'n belangrike faktor sounds roughly like uh buh-LAHNG-kri-kuh FAK-tor.

A useful spelling point: 'n is always written with the apostrophe, and it normally stays lowercase even at the beginning of a sentence: 'n Belangrike faktor is koste.

Because the adjective comes before the noun.

In Afrikaans, many adjectives take -e when they are used directly before a noun:

• 'n belangrike faktor = an important factor

But when the adjective comes after a linking verb like is, it usually appears without that -e:

• Die faktor is belangrik = The factor is important

So:

• belangrike faktor → adjective before noun
• is belangrik → adjective after is

Here, Koste is being used in a general sense, meaning something like costs, cost, or expense as a concept.

Afrikaans often leaves out the article when speaking generally:

• Koste is 'n belangrike faktor. = Costs/cost is an important factor.

If you wanted to talk about a specific set of costs, you would more likely use die:

• Die koste is hoog. = The costs are high.

Yes, is is the present-tense form of to be here, just like English is.

But Afrikaans is simpler than English in one important way: the verb does not change depending on the subject in the present tense.

For example:

• Die faktor is belangrik.
• Die faktore is belangrik.

Both use is.

So even if koste feels plural in meaning, is still stays is.

No. This is a very standard Afrikaans sentence pattern:

Subject + verb + complement

So:

• Koste = subject
• is = verb
• 'n belangrike faktor = complement

It is very similar to English:
Costs are an important factor / Cost is an important factor

You can sometimes move things around for emphasis, but the original sentence is the normal, neutral order.

A rough English-friendly guide is:

• Koste ≈ KOSS-tuh
• faktor ≈ FAK-tor

A few details:

• The o in Koste is short.
• The final -e in Koste is a weak vowel, like uh.
• faktor is a clear cognate of English factor, but the Afrikaans pronunciation is a bit more clipped and direct.

Neither. Afrikaans does not have grammatical gender in the same way that languages like German or French do.

So you do not need to learn separate forms for masculine factor or feminine factor. The article 'n works the same way regardless of gender.

That makes sentences like this much simpler for learners.

Yes, you could. That version is grammatical and puts more emphasis on 'n belangrike faktor first.

Compare:

• Koste is 'n belangrike faktor. → neutral, straightforward
• 'n Belangrike faktor is koste. → more marked, a bit more emphasis on what the factor is

The original sentence is the most natural basic version in many contexts.