Kichwa cha habari cha insha yake kilikuwa “Siku ya Soko”.

Literally, kichwa means head, and habari means news, information, or report. So kichwa cha habari literally means something like head of the information/news.

In actual usage, it means heading, headline, or title. In this sentence, it means the title of the essay.

Cha is a linking word that often works like of in English.

Here it appears twice because there are two links:

• kichwa cha habari = title / heading
• kichwa cha habari cha insha yake = the title of his/her essay

So the full phrase is built step by step:

• kichwa = head
• kichwa cha habari = heading/title
• kichwa cha habari cha insha yake = title of his/her essay

Both instances of cha agree with kichwa, which belongs to noun class 7.

Because the subject is kichwa, and kichwa is a class 7 noun. In Swahili, verbs agree with the noun class of the subject.

So:

• ki- = subject marker for class 7
• -li- = past tense marker
• -kuwa = be

That gives kilikuwa = it was (for a class 7 noun).

Why not the others?

• ilikuwa would match a different noun class
• alikuwa is used for a person, like he/she was
• ni is usually used for present tense identity, not past tense

Compare:

• Kichwa cha habari ni Siku ya Soko. = The title is Market Day.
• Kichwa cha habari kilikuwa Siku ya Soko. = The title was Market Day.

Swahili usually does not distinguish his and her in this kind of possessive form. So yake can mean:

• his
• her
• sometimes its, depending on context

You learn which one is meant from the situation, not from the word itself.

So insha yake can mean:

• his essay
• her essay

In Swahili, possessives normally come after the noun, not before it.

So:

• insha yake = his/her essay
• literally: essay his/hers

This is normal Swahili word order.

A few more examples:

• kitabu chake = his/her book
• rafiki yangu = my friend
• jina lao = their name

Yake is built from two parts:

• ya- = the possessive agreement for the noun class of insha
• -ke = the possessive stem meaning his/her/its

This is important: in Swahili, the possessive agrees with the thing possessed, not with the owner.

So because insha belongs to a noun class that uses ya-, you get yake.

Word for word:

• siku = day
• ya = of
• soko = market

So Siku ya Soko literally means day of market, which in natural English is Market Day.

Just like cha, ya is also a linking word meaning something like of, but it matches a different noun class.

Here the head noun is siku, and siku takes the connector ya, so:

• siku ya soko = day of market

Swahili uses different connector forms depending on the noun class of the first noun:

• kitabu cha mwanafunzi = the student’s book
• siku ya soko = market day
• mji wa pwani = coastal town

So ya is there because it matches siku.

Yes. Swahili has no separate words for the or a/an.

Whether something is understood as the or a usually comes from context.

So:

• Kichwa cha habari cha insha yake can naturally be understood as the title of his/her essay
• English needs an article, but Swahili does not

This is very common in Swahili and is not a special feature of this sentence.

Yes. Depending on context, kichwa cha habari can mean:

• headline
• heading
• title

In this sentence, because it is talking about an essay (insha), the best translation is title.

If it were about a newspaper article, it could easily mean headline instead.