Kesho, tutapaka rangi ukuta wa sebule.

Kesho means tomorrow. It is a time expression, and Swahili often puts time words at the beginning of the sentence to set the scene.

So:

Kesho, tutapaka rangi ukuta wa sebule.
= Tomorrow, we will paint the living-room wall.

You could also move kesho later:

Tutapaka rangi ukuta wa sebule kesho.

Both are fine.

Tutapaka has three main parts:

• tu- = we
• -ta- = future tense / will
• -paka = apply / smear / paint

So tutapaka literally means we-will-apply/paint.

Because Swahili packs a lot of grammar into the verb itself. Subject and tense are usually built into one verb word.

So where English says:

• we
  • will
    • paint

Swahili says:

• tu-
  • -ta-
    • -paka
• tutapaka

This is very normal in Swahili.

Not exactly in the same way English paint does.

Kupaka more literally means to apply, to smear, or to spread onto a surface.
When you add rangi, you get kupaka rangi, which is the normal way to say to paint.

So:

• kupaka rangi = to paint
• literally: to apply paint/color

Here, rangi means paint.

But rangi can also mean color in other contexts. Swahili uses the same word for both ideas, and context tells you which meaning is intended.

In this sentence, because it follows kupaka, it clearly means paint:

• kupaka rangi = to paint

It literally means wall of the living room.

More naturally in English, that would be:

• the living-room wall
• the wall of the living room

So the structure is:

• ukuta = wall
• wa = of
• sebule = living room

Wa is a linking word that often corresponds to of in English.

In Swahili, this linker changes form depending on the noun before it. After ukuta, the correct form is wa.

So:

• ukuta wa sebule = wall of the living room

This is part of the noun-class agreement system in Swahili.

Because Swahili normally does not use articles like a, an, or the.

Whether something is a wall or the wall is usually understood from context.

So ukuta wa sebule can mean:

• a living-room wall
• the living-room wall

In this sentence, the context makes the wall the natural translation.

Not completely, but the given order is very natural.

A few things to note:

• Kesho can move around.
• kupaka rangi is a common combination, so keeping rangi close to paka sounds natural.

So this is a very normal sentence:

Kesho, tutapaka rangi ukuta wa sebule.

And this is also possible:

Tutapaka rangi ukuta wa sebule kesho.

Because the object is already stated clearly after the verb: ukuta wa sebule.

In Swahili, object markers are often left out when the full object noun is expressed directly. So the sentence is perfectly normal as it is.

In other contexts, an object marker can appear for emphasis, reference, or when the object has already been mentioned, but it is not required here.