Ukiona moshi jikoni, zima jiko mara moja.

Ukiona means if you see or when you see.

It can be broken down like this:

• u- = you (singular)
• -ki- = a marker often meaning if or when
• -on- = the verb root from kuona (to see)
• -a = the final vowel

So u-ki-on-a gives the idea if/when you see.

It can mean either, depending on context.

In Swahili, -ki- often introduces a condition or a situation:

• if
• when
• sometimes whenever

So ukiona moshi jikoni can be understood as:

• if you see smoke in the kitchen
• when you see smoke in the kitchen

In a safety instruction like this, English often prefers if, but Swahili -ki- comfortably covers both ideas.

The -ni ending often makes a noun locative, meaning something like:

• in
• at
• to

So:

• jiko = stove, cooking place
• jikoni = in/at the kitchen

Swahili often expresses location by changing the noun itself, instead of adding a separate word like in.

Yes. They are closely related.

• jiko = stove, cooking stove, sometimes hearth
• jikoni = kitchen

Historically, the idea is connected to the cooking place. So jikoni is basically the place associated with the jiko.

In this sentence:

• jikoni = in the kitchen
• jiko = the stove

So they are related, but they are not interchangeable.

Zima jiko means turn off the stove or put out the stove/fire.

The verb kuzima can mean:

• to extinguish
• to switch off
• to put out

So zima is a very useful verb in Swahili. It can be used for things like:

• a fire
• a lamp
• a stove
• electricity or lights in some contexts

Here, zima jiko is the natural way to say turn off the stove.

Because zima is the singular imperative, used for a direct command to one person.

In Swahili, a basic command often uses the bare verb stem:

• soma = read!
• kuja = come!
• zima = turn off! / extinguish!

So zima jiko is a direct command: turn off the stove.

Uzima would not be the normal form here.

It is talking to one person.

You can tell from two things:

• u- in ukiona = you singular
• zima = singular imperative

If you were speaking to more than one person, you would normally change the forms, for example:

• Mkiona moshi jikoni, zimeni jiko mara moja.

That would mean If you all see smoke in the kitchen, turn off the stove immediately.

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

So:

• moshi can mean smoke or the smoke, depending on context
• jiko can mean a stove or the stove
• jikoni can mean in the kitchen

The exact meaning is understood from the situation, not from a separate article.

Literally, mara moja is something like one time or once:

• mara = time/occasion
• moja = one

But as a very common expression, mara moja usually means:

• immediately
• right away
• at once

So in this sentence, it does not mean one time in the most literal sense. It means do it immediately.

Because moshi is simply the object of ukiona.

So the first part works like this:

• ukiona = if/when you see
• moshi = smoke
• jikoni = in the kitchen

Together:

• ukiona moshi jikoni = if/when you see smoke in the kitchen

Swahili does not need a separate word like some or any here.

Yes, but it is also very natural.

The sentence follows a common pattern:

condition first + command second

• Ukiona moshi jikoni = condition
• zima jiko mara moja = command/result

This is a very normal way to give instructions or warnings in Swahili.

The comma helps show the pause between the two parts, just like in English.

You sometimes can use uzime, but it is not the most direct form here.

• zima = direct imperative: turn it off!
• uzime = subjunctive form, often used in other structures, for example after expressions like:
  • ni muhimu = it is important
  • lazima = it is necessary / must
  • verbs of telling, wanting, asking, etc.

For example:

• Ni muhimu uzime jiko. = It is important that you turn off the stove.

But in a clear warning or instruction, zima jiko mara moja is the more straightforward choice.

A simple pronunciation guide is:

U-ki-o-na mo-shi ji-ko-ni, zi-ma ji-ko ma-ra mo-ja

A few helpful points:

• j sounds like the j in jam
• sh sounds like the sh in shoe
• vowels are usually pure and clear:
  • a as in father
  • e as in bed (without sliding)
  • i as in machine
  • o as in more (but shorter/purer)
  • u as in rule

So:

• moshi sounds roughly like MOH-shee
• jikoni sounds roughly like jee-KOH-nee
• mara moja sounds roughly like MAH-rah MOH-jah