Dereva alikanyaga kanyagio cha breki na kupiga honi kwa sababu watoto walikuwa karibu na barabara.

Alikanyaga can be split like this:

• a- = he/she (3rd person singular, for a human subject)
• -li- = past tense
• -kanyaga = step on / press with the foot

So alikanyaga means he/she stepped on.

Because the subject is dereva (driver), the full idea is the driver stepped on.

Even though dereva is a borrowed noun and does not look like a typical Swahili class 1 noun such as mtoto, it still refers to a person, so it usually takes human singular agreement.

That is why the verb begins with a-:

• dereva alikanyaga = the driver stepped on

If it were plural, the agreement would change to wa- for people.

They are related, but they are different parts of speech:

• kanyaga = a verb meaning step on / tread on
• kanyagio = a noun meaning pedal

So:

• alikanyaga = he/she stepped on
• kanyagio cha breki = brake pedal

This is a very common pattern in Swahili: a verb root and a related noun can look similar.

This is because kanyagio takes noun-class agreement that requires cha in this kind of of construction.

So:

• cha = the connector agreeing with kanyagio
• breki = brake

Literally, kanyagio cha breki is something like pedal of brake, but natural English is brake pedal.

This -a connector changes form depending on the noun class:

• mtoto wa shule = child of school / school child
• kitabu cha mwanafunzi = student’s book
• kanyagio cha breki = brake pedal

They are commonly used Swahili words, but they are loanwords, especially from English:

• breki = brake
• honi = horn

Swahili often adapts borrowed words to Swahili spelling and pronunciation. That is very normal, especially for modern objects, vehicles, and technology.

This is an idiomatic expression.

• kupiga literally often means to hit / strike / beat
• but in many expressions it has a broader meaning, like to sound, to do, or to perform
• honi = horn

So kupiga honi means to sound the horn, that is, to honk.

This is similar to how languages often use expressions that are not translated word-for-word.

Here na connects a second action with the first one:

• alikanyaga kanyagio cha breki na kupiga honi

The sentence is using na + infinitive (kupiga) to add another action by the same subject, in a compact way.

A learner will also see other ways to express this, such as a fully conjugated second verb, for example:

• ... na akapiga honi
• sometimes ... na alipiga honi

So the given sentence means the driver stepped on the brake pedal and honked. The subject of kupiga is still understood to be the driver.

Kwa sababu means because.

It introduces a reason:

• kwa sababu watoto walikuwa karibu na barabara
  = because the children were near the road

You can think of kwa sababu as a fixed phrase meaning for the reason that.

Because watoto is plural, the verb must agree with it.

Breakdown of walikuwa:

• wa- = they (human plural)
• -li- = past tense
• -kuwa = be

So watoto walikuwa means the children were.

Compare:

• mtoto alikuwa = the child was
• watoto walikuwa = the children were

Because karibu here is not a normal action verb. It means near / close, so Swahili uses kuwa (to be) with it:

• walikuwa karibu = they were near

So the structure is basically:

• watoto = children
• walikuwa = were
• karibu na barabara = near the road

This is very similar to English were near.

No. Na has several uses in Swahili.

In karibu na barabara, the phrase karibu na means near / close to.

So here na does not mean and. It is part of the expression:

• karibu na barabara = near the road

Earlier in the sentence, na does mean and:

• ... cha breki na kupiga honi = ... the brake pedal and honked

So the same word can have different functions depending on context.

Yes, it is the same form, but the meaning depends on context.

• Karibu! = Welcome!
• karibu na barabara = near the road

This is a common point of confusion for learners. In this sentence, because it is followed by na barabara, it clearly means near.

Swahili normally does not use articles like English the and a/an.

So nouns such as:

• dereva
• watoto
• barabara

can mean the driver / a driver, the children / children, the road / a road, depending on context.

The exact meaning is usually clear from the situation or from the rest of the sentence.