Nilidhani Asha yuko sokoni, kumbe yuko nyumbani.

Nilidhani comes from the verb -dhani meaning to think / to suppose.

It breaks down like this:

• ni- = I
• -li- = past tense
• -dhani = think / suppose

So nilidhani means I thought or I assumed.

In Swahili, when talking about someone being in a place, the usual form is the locative copula, such as:

• yuko = she/he is (in a place)
• wako = they are (in a place)
• niko = I am (in a place)

So:

• Asha yuko sokoni = Asha is at the market

Using ni here would not sound natural for location. Ni is mainly used for identification or classification, such as:

• Asha ni mwalimu = Asha is a teacher

But for location, Swahili prefers yuko, niko, uko, etc.

Yuko is a form meaning he/she is in a location or state of presence.

It can be broken down as:

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

So yuko is used when talking about where someone is:

• Asha yuko nyumbani = Asha is at home
• Mwalimu yuko darasani = The teacher is in the classroom

Because each clause needs its own verb.

The sentence has two parts:

• Nilidhani Asha yuko sokoni = I thought Asha was at the market
• kumbe yuko nyumbani = but actually she is at home / it turns out she is at home

In Swahili, you repeat the verb naturally in each clause, just as English does with was and is.

Kumbe is a very useful word in Swahili. It often means something like:

• but actually
• as it turns out
• it turns out that
• to my surprise

In this sentence, it shows that the speaker’s first assumption was wrong:

• Nilidhani Asha yuko sokoni, kumbe yuko nyumbani.
• I thought Asha was at the market, but actually she’s at home.

So kumbe often introduces an unexpected truth or correction.

No, not exactly.

• Lakini means but
• Kumbe means but actually / as it turns out / surprisingly

Compare:

• Nilitaka kwenda, lakini nilichoka.
  I wanted to go, but I got tired.

• Nilidhani ameondoka, kumbe bado yuko hapa.
  I thought he had left, but actually he is still here.

So kumbe is used when there is a discovery, correction, or unexpected fact.

Sokoni means at the market or in the market.

The base noun is:

• soko = market

Adding -ni often makes it locative, meaning in / at / to that place:

• soko → sokoni = at the market
• nyumba → nyumbani = at home / at the house
• shule → shuleni = at school
• kanisa → kanisani = at church

This -ni ending is very common for places in Swahili.

The base word is:

• nyumba = house / home

When you add the locative -ni, it becomes:

• nyumbani = at home / in the house / to the house, depending on context

In everyday Swahili, nyumbani is often best translated simply as at home.

So:

• Asha yuko nyumbani = Asha is at home

Swahili often leaves out that when introducing a clause after verbs like think, say, or know, just as English can:

• I thought Asha was at the market
• I thought that Asha was at the market

Both are natural in English, and Swahili often does the same by simply putting the next clause directly after the verb:

• Nilidhani Asha yuko sokoni

You may sometimes see words like kuwa or kwamba in other constructions, but here they are not necessary.

This is a great question. In Swahili, the tense is carried by nilidhani (I thought), while the embedded clause Asha yuko sokoni can remain in the present form.

So literally, the structure is closer to:

• I thought Asha is at the market

But natural English usually shifts the tense to:

• I thought Asha was at the market

This is a normal translation difference. Swahili does not always match English tense patterns exactly in reported thought or speech.

Yes, but it changes the meaning slightly.

• Asha yuko sokoni = Asha is at the market
• Asha alikuwa sokoni = Asha was at the market

In your sentence, yuko suggests the speaker believed that, at that moment, Asha was at the market. Then the speaker corrects that belief:

• I thought she was at the market, but actually she is at home

If you said alikuwa sokoni, you would be talking more clearly about a past location.

Yes. That is a very good translation.

Depending on context, sokoni can be:

• at the market
• in the market

And kumbe can be translated in several natural ways:

• but actually
• but it turns out
• only to find that
• as it turns out

So all of these are reasonable:

• I thought Asha was at the market, but actually she is at home.
• I thought Asha was in the market, but it turns out she is at home.

Yes, the name Asha is not repeated, but it is still understood.

In the second clause:

• kumbe yuko nyumbani

the yu- in yuko already tells you the subject is he/she, and from context we know it is still Asha.

So Swahili does not need to repeat the name:

• Nilidhani Asha yuko sokoni, kumbe yuko nyumbani.

If you wanted, you could repeat Asha, but it is usually unnecessary.

The basic order is:

• Nilidhani = I thought
• Asha yuko sokoni = Asha is at the market
• kumbe yuko nyumbani = but actually she is at home

So the full order is essentially:

I thought + [clause], kumbe + [corrected clause]

This is a very normal and natural Swahili pattern for expressing a mistaken assumption followed by the real situation.

Absolutely. This is a very common pattern.

Examples:

• Nilidhani Juma yuko ofisini, kumbe yuko hospitalini.
  I thought Juma was at the office, but actually he is at the hospital.

• Nilidhani watoto wako shuleni, kumbe wako nyumbani.
  I thought the children were at school, but actually they are at home.

• Nilidhani uko mjini, kumbe uko kijijini.
  I thought you were in town, but actually you’re in the village.

So this sentence is a very useful model to learn.