Nilimwona dada akichanganya mtindi na zabibu, kana kwamba anafanya mchanganyiko maalum.

Because Nilimwona includes an object marker for him/her.

Breakdown:

• ni- = I
• -li- = past tense
• -m- = him/her
• -ona = see

So Nilimwona literally works like I saw her/him.

With a person as the object, Swahili often uses this object marker even when the noun is also stated afterward:

• Nilimwona dada... = I saw the sister / I saw a woman...
• Niliona dada... is also possible, but Nilimwona sounds more natural when referring to a specific person.

Because Swahili often uses both:

1. the object marker in the verb, and
2. the full noun after it.

This is especially common with animate, specific objects, such as people.

So:

• Nilimwona dada = I saw the sister / I saw the woman

The -m- marks the object inside the verb, and dada tells you exactly who that object is.

Dada can mean several things depending on context:

• sister
• young woman
• miss / lady in some contexts

Swahili does not force the same kind of distinction English does here. So the exact meaning depends on the situation.

Also, Swahili nouns do not have grammatical gender the way some languages do, but words like dada naturally refer to a female person.

Here -ki- is a marker often used for a simultaneous or accompanying action, often understood as while.

Breakdown of akichanganya:

• a- = he/she
• -ki- = while / as / when doing
• -changanya = mix

So akichanganya means:

• while she was mixing
• as she was mixing

In this sentence, it shows what the woman was doing at the time she was seen.

Because akichanganya connects the action directly to the main verb Nilimwona.

So the structure is roughly:

• I saw her while mixing...

If you say anachanganya, that is more like a regular main-clause present/progressive form:

• she is mixing

In standard Swahili, akichanganya is a neat way to show the action was happening at the same time as the seeing.

Yes, a- is the 3rd person singular subject marker, meaning:

• he
• she

Swahili does not distinguish he and she in the verb form.

So:

• akichanganya = he/she while mixing
• anafanya = he/she is doing/making

We know it refers to she here only because the noun dada makes the person female.

Kana kwamba means:

• as if
• as though

It introduces an appearance, impression, or comparison.

So in this sentence, the speaker is saying it seemed like she was making some kind of special mixture.

It does not necessarily mean that she really was doing that; it only describes how it looked.

This is a very common thing learners notice.

Even though the main action is past (Nilimwona), anafanya can still be used after kana kwamba to describe the impression at that moment:

• as if she is making...

Swahili often uses the present here to express how something appears.

If you wanted to make the past background more explicit, you might also hear something like:

• kana kwamba alikuwa anafanya...

But kana kwamba anafanya... is perfectly natural.

Mchanganyiko is a noun made from the verb -changanya.

• changanya = mix
• mchanganyiko = mixture / blend / combination

So this is a common pattern in Swahili: a verb can produce a related noun.

In this sentence:

• mchanganyiko maalum = a special mixture / a special blend

Yes. Kufanya is a very common verb that can mean:

• do
• make

So anafanya mchanganyiko means:

• she is making a mixture
• she is putting together a blend

In other contexts, Swahili might also use verbs like:

• kutengeneza = make, prepare
• kuandaa = prepare

But kufanya is very normal and natural here.

• mtindi = yogurt / fermented milk / sour milk
• zabibu = grapes, and sometimes raisins depending on context

That second word can be a little tricky, because context matters.

So mtindi na zabibu could mean:

• yogurt and grapes or
• yogurt and raisins

Both are possible unless the wider context makes one clearer.

Because Swahili does not have articles like English a/an/the.

So a noun like dada can mean:

• a sister
• the sister
• a woman
• the woman

The exact meaning comes from context, not from an article.

The same applies to:

• mtindi = yogurt / the yogurt
• mchanganyiko maalum = a special mixture / the special mixture

English requires articles, but Swahili usually does not.