Mkutubi wa shule alituonyesha rejesta na kusema kila kitabu kinapaswa kuandikwa humo.

Literally, Mkutubi wa shule means the school librarian or more literally librarian of the school.

The word wa is a connector meaning of / belonging to. In Swahili, this connector changes to match the noun class of the first noun.

• mkutubi = librarian
• shule = school
• wa shule = of the school

So:

• Mkutubi wa shule = the librarian of the school

The reason it is wa and not some other form is that mkutubi belongs to the m-/wa- noun class in the singular, and that class uses wa as the possessive/associative connector.

Alituonyesha can be broken down like this:

• a- = he/she
• -li- = past tense
• -tu- = us
• -onyesh- = show
• -a = final vowel

So:

• a-li-tu-onyesh-a
• he/she + past + us + show
• meaning: he/she showed us

This kind of verb packing is very common in Swahili. A whole English phrase like he showed us can appear in one word.

Rejesta is a loanword, from English register.

In this sentence, it means something like:

• a register
• a record book
• a logbook

Swahili uses many loanwords, especially for administration, education, technology, and modern institutions. So seeing a word like rejesta is very normal.

Na kusema literally means and to say, but in normal English translation it usually comes out as:

• and said
• and saying

So in the sentence:

• alituonyesha rejesta na kusema...
• he/she showed us the register and said...

Swahili often uses na plus the infinitive (ku-/sema here appearing as kusema) to link actions in a smooth narrative way.

It does not always match English word-for-word. Even though kusema is technically an infinitive, the whole phrase naturally means the next action in the sequence.

Kila means every or each.

So:

• kila kitabu = every book / each book

A useful point is that after kila, the noun usually stays singular:

• kila kitabu = every book
• not kila vitabu

This is similar to English, where we say every book, not every books.

The verb kinapaswa agrees with kitabu.

Here is the breakdown:

• kitabu = book
• kitabu belongs to the ki-/vi- noun class
• singular agreement for this class is ki-

So:

• ki-na-paswa
• it + present + be supposed/required

Meaning:

• it should
• it is supposed to
• it must (depending on context)

Because the subject is kila kitabu (every book), the verb must agree with kitabu, so we get ki-.

If it were plural:

• vitabu vinapaswa... = books should...

-paswa is used to express obligation, expectation, or requirement.

So kinapaswa can mean:

• it should
• it is supposed to
• it ought to
• it is required to

In this sentence:

• kila kitabu kinapaswa kuandikwa humo
• every book should be entered/written in there

So this is not just describing an action; it is expressing a rule or requirement.

This is an important grammar point.

• kuandika = to write
• kuandikwa = to be written

The ending -w- marks the passive.

So:

• anaandika kitabu = he/she is writing a book
• kitabu kinaandikwa = the book is being written

In your sentence:

• kuandikwa humo
• literally: to be written in there

But in context, with a register, this often means:

• to be entered there
• to be recorded there
• to be written down there

So the passive is important because the book is not doing the writing; the book is the thing being recorded.

Because the focus is on each book as the thing that must be recorded.

Compare:

• kila kitabu kinapaswa kuandikwa humo
  = every book should be written/recorded in it

versus an active version like:

• mtu anapaswa kuandika kila kitabu humo
  = someone should write/record every book in it

The original sentence does not focus on who writes the entry. It focuses on the rule: each book has to be entered in the register.

That is why the passive sounds natural here.

Humo means in there, inside there, or in it.

In this sentence, it refers back to rejesta:

• rejesta ... kila kitabu kinapaswa kuandikwa humo
• the register ... every book should be written in it / entered there

So humo avoids repeating katika rejesta.

It is a compact way to say:

• inside that thing
• in there

Swahili often uses locative words like humo, hapo, huko, mle, etc. to avoid repeating a noun.

So instead of saying:

• kila kitabu kinapaswa kuandikwa katika rejesta

the sentence says:

• kila kitabu kinapaswa kuandikwa humo

This sounds more natural and less repetitive.

You can think of humo as roughly like English in it or therein, depending on style.

Yes, a little.

Humo is one of the Swahili locative forms. It usually suggests:

• inside
• within
• in there

So it is not just there in a general sense. It specifically points to interior location.

That fits well with rejesta, because a register is something where information is written in it.

Because Swahili often uses the singular after kila to express a general rule applying to all individual items.

So:

• kila kitabu = each/every book

This is the normal way to say it. The sentence is not about one specific book only; it is about every member of the category, one by one.

English does the same thing:

• Every book must be recorded
• not Every books must be recorded

Kitabu belongs to the ki-/vi- noun class:

• singular: kitabu
• plural: vitabu

This affects agreement in the sentence:

• kitabu → ki-
• so: kinapaswa

If the noun were plural, the agreement would change:

• vitabu vinapaswa kuandikwa humo
• the books should be recorded in there

So noun class agreement is the reason for ki- in kinapaswa.

Both are possible, but recorded there or entered there is often better in this context.

Literally:

• kuandikwa = to be written
• humo = in there

So the literal meaning is to be written in there.

But since the place is a register, natural English usually prefers:

• to be recorded there
• to be entered in it
• to be written down in it

So the best translation depends on whether you want to stay close to the Swahili wording or sound natural in English.

Yes, normally it is understood to be the same person.

So:

• Mkutubi wa shule alituonyesha rejesta na kusema...
• The school librarian showed us the register and said...

The sentence naturally implies that the librarian did both actions:

1. showed us the register
2. said that every book should be recorded in it

Swahili often leaves this kind of subject repetition unspoken when it is already clear.

Yes.

In Swahili, a- as a subject marker for a singular person usually does not tell you gender.

So:

• alituonyesha can mean
  • he showed us
  • she showed us

You need context to know which one is meant.

This is very common in Swahili: pronouns and verb markers usually do not mark he/she separately.

Yes: it is a good example of several core Swahili patterns working together:

1. Noun + associative phrase

   • Mkutubi wa shule = the school librarian

2. A fully packed verb

   • alituonyesha = he/she showed us

3. Loanword vocabulary

   • rejesta

4. General rule with kila

   • kila kitabu = every book

5. Noun class agreement

   • kitabu → kinapaswa

6. Passive infinitive

   • kuandikwa = to be written / recorded

7. Locative reference

   • humo = in it / in there

So this one sentence is quite useful for studying everyday Swahili grammar.