Mama yuko kitandani kwa sababu ana homa.

In Swahili, ni is usually used to identify or classify something, like Mama ni mwalimu = Mother is a teacher.

But yuko is a form of the verb to be used for a person’s location or state/presence. So:

• Mama yuko kitandani = Mother is in bed
• Mama ni mgonjwa = Mother is a sick person / Mother is ill in a more identifying sense

Here, the sentence is talking about where she is, so yuko is the natural choice.

Yuko can be understood as:

• yu- = subject marker for he/she
• -ko = a locative form meaning roughly is there / is in a place

So yuko means he/she is there / he/she is present / he/she is at a place.

Because Mama is a person in noun class 1, the verb agrees with that class, so yuko is the correct form.

The ending -ni often marks a location in Swahili.

So:

• kitanda = bed
• kitandani = in/on the bed, often translated naturally as in bed

This locative -ni is very common:

• nyumba = house
• nyumbani = at home
• shule = school
• shuleni = at school

So kitandani tells you that the mother is located in bed.

It can cover both, depending on context. Swahili locative expressions are often less rigid than English prepositions.

In this sentence, Mama yuko kitandani is best understood as Mother is in bed, because that is the normal English expression when someone is sick.

So even though the literal spatial sense could be broader, the natural translation here is in bed.

Kwa sababu means because or for the reason that. It is a very common expression and is often treated as a set phrase.

Examples:

• Nimechelewa kwa sababu kulikuwa na foleni. = I am late because there was traffic.
• Analia kwa sababu anaumwa. = She is crying because she is in pain.

In your sentence:

• Mama yuko kitandani kwa sababu ana homa.
• Mother is in bed because she has a fever.

Ana comes from the verb kuwa na, which means to have.

So:

• ana = he/she has
• homa = fever

Together, ana homa means she has a fever.

This is the normal way to express possession in Swahili:

• nina kitabu = I have a book
• ana gari = he/she has a car
• ana homa = he/she has a fever

You do not use ni for possession like English uses to be in some expressions.

Usually, homa is translated as fever, and that is the correct meaning here.

However, in everyday use, learners should know that health vocabulary does not always match perfectly between languages. In many contexts, homa clearly refers to fever, but depending on region or context, people may use illness words a bit more broadly in casual speech.

For this sentence, though, ana homa is best understood simply as she has a fever.

In Swahili, the subject is usually built into the verb.

So in ana:

• a- = he/she
• -na = has

That means ana already includes the idea of she has.

Because Mama is already stated, Swahili does not need a separate pronoun like English she.

The sentence works like this:

• Mama = Mother
• yuko = she is
• kitandani = in bed
• kwa sababu = because
• ana = she has
• homa = fever

This word order is the most natural and straightforward:

• Mama yuko kitandani kwa sababu ana homa.

Swahili word order is often similar to English: subject + verb + place + reason.

You can sometimes rearrange parts for emphasis, but for a learner, it is best to keep this order. It is clear, idiomatic, and easy to understand.

Yes, you may hear or use:

• Mama yuko kitandani
• Mama yuko kwenye kitanda

Both can refer to being on/in the bed, but they are not always exactly identical in feel.

• kitandani is a compact locative form and often sounds very natural for in bed
• kwenye kitanda is a more explicit prepositional phrase, roughly on/in the bed

In many everyday situations, kitandani is the more natural choice when someone is sick and resting.

Mama refers to a person, so it behaves like a noun in the m-wa class, often called class 1/2 for singular/plural human nouns.

That affects agreement in the verb:

• singular person: a- / yu-
• plural people: wa-

So:

• Mama yuko kitandani = Mother is in bed
• Mama ana homa = Mother has a fever

If it were plural, you would get forms like:

• Wako kitandani = They are in bed
• Wana homa = They have a fever

The important point is that verbs in Swahili agree with the noun class of the subject.