Die naaimasjien stik die kleedstof.

Because die is the Afrikaans definite article, meaning the.

It appears twice because there are two nouns:

• die naaimasjien = the sewing machine
• die kleedstof = the dress fabric / garment fabric

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

• singular nouns
• plural nouns
• all genders

So unlike languages such as German or Dutch, you do not have to learn different forms of the for masculine, feminine, or neuter nouns.

Yes. Afrikaans very often forms compound nouns as a single word.

So:

• naai = sew
• masjien = machine
• naaimasjien = sewing machine

This is very normal in Afrikaans. English often writes similar ideas as two words, but Afrikaans frequently joins them into one.

Here stik means sews or stitches.

It is the verb of the sentence:

• Die naaimasjien stik die kleedstof.
• The sewing machine sews/stitches the fabric.

Depending on context, stik can refer to sewing with stitches. In some contexts, English might translate it as stitch, and in others more naturally as sew.

Because Afrikaans verbs usually do not change according to the subject in the present tense.

Compare with English:

• I sew
• she sews
• the machine sews

In Afrikaans, the verb usually stays the same:

• Ek stik
• Sy stik
• Die naaimasjien stik

So Afrikaans is simpler here than English: there is no special -s ending for he/she/it in the present tense.

Yes, in this sentence it is basically the same as normal English word order:

• Die naaimasjien = subject
• stik = verb
• die kleedstof = object

So it follows the pattern:

Subject + Verb + Object

That makes this sentence quite straightforward for an English speaker.

Kleedstof refers to fabric/cloth used for clothing or garments.

So in this sentence it means something like:

• the garment fabric
• the dress fabric
• sometimes simply the cloth/fabric, depending on context

It is also another example of a compound word:

• kleed relates to clothing/dress
• stof = fabric/material/dust, depending on context
• kleedstof = clothing fabric / garment material

As often happens, the most natural English translation depends on context.

No, not in the way many European languages do.

For a learner, the important point is:

• you do not need to memorize masculine, feminine, and neuter articles
• die works for all definite nouns here

So naaimasjien and kleedstof do not require different forms of the.

This is one reason Afrikaans grammar is often easier for English speakers than Dutch or German grammar.

A rough English-friendly guide would be:

• naaimasjien ≈ naa-ee-ma-sheen
• kleedstof ≈ klate-stof or klayd-stof, depending on accent and how precisely you want to imitate Afrikaans sounds
• stik ≈ stuck with a shorter vowel, closer to stik

A few useful sound notes:

• aa is a long vowel sound
• sj in masjien sounds like sh
• ie in Afrikaans is usually pronounced like English ee

If you want to sound more natural, the biggest thing is to keep Afrikaans vowels fairly clear and not over-reduce them like in casual English.

Yes, it could be indefinite if the meaning were different.

In your sentence, die kleedstof means the fabric, referring to specific fabric.

If you wanted a fabric or some fabric, Afrikaans would normally use:

• 'n kleedstof = a fabric / a garment fabric

So the difference is:

• die kleedstof = the fabric
• 'n kleedstof = a fabric

The same applies to the subject:

• Die naaimasjien = the sewing machine
• 'n naaimasjien = a sewing machine

Grammatically, yes: the subject is die naaimasjien, so the machine is presented as the thing performing the action.

In practice, this is normal wording even though a person is probably operating it. English does the same:

• The sewing machine sews the fabric

So the sentence focuses on the instrument or machine doing the sewing, not on the person using it.

A common past construction in Afrikaans uses het plus a past participle, often with ge-.

So you would get:

• Die naaimasjien het die kleedstof gestik.
• The sewing machine sewed / stitched the fabric.

Notice the word order:

• present: Die naaimasjien stik die kleedstof.
• past: Die naaimasjien het die kleedstof gestik.

This is a very common Afrikaans pattern.

Afrikaans usually uses a double negative with nie ... nie.

So:

• Die naaimasjien stik die kleedstof nie.

In fuller, standard negative structure, you often think of it as placing:

• one nie after the main part of the sentence
• another nie at the end

So learners often learn the pattern as: Subject + Verb + Object + nie

and in broader grammar explanations: ... nie ... nie

Afrikaans negation is one of the most distinctive features of the language, so it is worth getting used to early.

Yes, very much.

• Die naaimasjien stik die kleedstof. = The sewing machine sews the fabric.

If you say:

• Die kleedstof stik die naaimasjien.

then grammatically it would mean:

• The fabric sews the sewing machine

That is odd semantically, but it shows that word order matters. In a simple statement like this, the first noun phrase is the subject, and the noun phrase after the verb is the object.