Kesho jioni, mimi na Juma tutatembelea jumba la maonyesho mjini.

In Swahili, expressions of time often appear without a preposition. So:

• kesho = tomorrow
• jioni = evening

Together, Kesho jioni naturally means tomorrow evening.

This is normal in Swahili, just like:

• leo asubuhi = this morning
• jana usiku = last night

You do not need a separate word for in or on here.

Yes, literally it is me and Juma, but in Swahili this is a normal way to say Juma and I or Juma and me, depending on the English translation.

• mimi = I / me
• na = and
• Juma = Juma

Swahili does not have the same kind of I vs. me rule in coordinated phrases that English has. So mimi na Juma is perfectly natural.

Mimi is not always strictly necessary, because the verb already shows the subject:

• tu- in tutatembelea means we

So the sentence could often be understood without mimi if the context is clear. But speakers may still include mimi for:

• clarity
• emphasis
• balance in a phrase like mimi na Juma

So mimi na Juma tutatembelea... is completely natural.

tutatembelea can be broken down like this:

• tu- = we
• -ta- = future tense
• tembelea = visit

So:

• tu-ta-tembelea = we will visit

This is a very useful Swahili pattern. For example:

• nitasoma = I will read
• utasoma = you will read
• atasoma = he/she will read
• tutasoma = we will read

Kutembelea is the dictionary form / infinitive, meaning to visit.

When the verb is used in a sentence, it usually loses the ku- infinitive prefix and takes subject and tense markers instead:

• kutembelea = to visit
• tutatembelea = we will visit
• wanatembelea = they are visiting

So kutembelea is the base form you learn, and tutatembelea is the conjugated form used in the sentence.

Literally, it means something like house/building of exhibitions/displays.

Parts:

• jumba = large house, hall, building, mansion
• maonyesho = exhibitions, displays, shows

So jumba la maonyesho is a natural way to say:

• gallery
• exhibition hall
• museum/show hall depending on context

The exact English translation can vary, but the structure is very normal in Swahili.

La is a connector meaning of, and its form changes depending on the noun class of the first noun.

Here:

• jumba belongs to a noun class that uses la
• so jumba la maonyesho = hall/building of exhibitions

This kind of connector agreement is very common in Swahili. For example:

• kitabu cha mwanafunzi = the student’s book / book of the student
• nyumba ya mwalimu = the teacher’s house
• jumba la maonyesho = exhibition hall

So la is not random; it agrees with jumba.

Because Swahili and English do not always package ideas the same way.

• maonyesho is a plural noun meaning exhibitions, displays, or showings
• jumba la maonyesho literally refers to a place for displays/exhibitions

English may compress that into a singular word like gallery or exhibition hall, but Swahili often keeps the underlying plural idea.

So this is not strange in Swahili, even if the most natural English translation is singular.

Mjini means in town, in the city, or downtown, depending on context.

It comes from:

• mji = town / city
• -ni = a locative ending meaning in, at, or to a place

So:

• mji = town
• mjini = in town / in the city

This -ni ending is very common:

• nyumbani = at home
• shuleni = at school
• sokoni = at the market

Swahili often puts place expressions after the object or near the end of the sentence.

So the structure here is roughly:

• Kesho jioni = time
• mimi na Juma = subject
• tutatembelea = verb
• jumba la maonyesho = object
• mjini = place/location

That word order is very natural in Swahili. Time expressions are especially common at the beginning.

It can mean both, depending on context.

In this sentence:

• mimi na Juma = Juma and I

But elsewhere:

• ninakuja na Juma = I am coming with Juma

So na is a very common word with more than one related meaning, and context tells you whether it means and or with.

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

So jumba la maonyesho can mean:

• an exhibition hall
• the exhibition hall
• exhibition hall

The exact meaning depends on context.

This is one of the big differences from English, and learners usually need some time to get used to it.

Yes, to some extent. Swahili word order is fairly flexible, especially with time expressions.

For example, Kesho jioni can be moved for emphasis. But the original order is very natural and common:

• Kesho jioni, mimi na Juma tutatembelea jumba la maonyesho mjini.

Starting with the time phrase is especially common when you want to set the scene first, like English Tomorrow evening, ...

So other orders may be possible, but this version sounds normal and clear.