Mkutubi alisema ni muhimu kurudisha kitabu kwa wakati ili wengine waweze kukisoma.

In Swahili, after verbs like alisema (he/she said), the word kwamba (that) is often optional.

So both of these are possible:

• Mkutubi alisema ni muhimu...
• Mkutubi alisema kwamba ni muhimu...

They both mean essentially the same thing. Leaving out kwamba is very common and natural.

Ni muhimu means it is important or is important.

Here, ni is the basic copula, often translated as is/are.
Muhimu means important.

This structure is impersonal: it does not need a subject like English it. So Swahili can simply say:

• ni muhimu = it is important

You do not need a separate word for it here.

Kurudisha is the infinitive, meaning to return or to bring back.

After ni muhimu, Swahili often uses an infinitive to express the action that is important:

• ni muhimu kurudisha kitabu = it is important to return the book

So this works much like English to return after it is important.

Breakdown:

• ku- = infinitive marker, like to
• -rudisha = return / bring back

Yes. In this sentence, kurudisha kitabu means to return the book in the sense of giving it back.

It can also have the idea of bring back, depending on context. For library books, return is the most natural English meaning.

Kwa wakati means on time or at the proper time.

Literally:

• kwa = by / with / at / in
• wakati = time

But as a phrase, kwa wakati is best understood as on time.

So:

• kurudisha kitabu kwa wakati = to return the book on time

Ili introduces a purpose clause. It means so that, in order that, or so that ... can.

In this sentence:

• ili wengine waweze kukisoma
• so that others can read it

It explains the reason or purpose for returning the book on time.

Because after ili, Swahili normally uses the subjunctive form, not the ordinary present tense.

Compare:

• wanaweza = they can / they are able
• waweze = that they may be able / so that they can

In this sentence, the speaker is expressing purpose, not simply stating a fact. That is why waweze is used after ili.

Breakdown of waweze:

• wa- = they
• -wez- = be able
• -e = subjunctive ending

So waweze means something like that they may be able.

Wengine means others.

It can stand on its own without repeating the noun. In this sentence, it means other people, understood from context.

So:

• ili wengine waweze kukisoma
• so that others can read it

You do not need to say watu wengine here, though that would also be possible in some contexts.

The ki- is an object marker referring back to kitabu (book).

Breakdown:

• ku- = infinitive marker, to
• ki- = it (for a class 7 noun like kitabu)
• -soma = read

So:

• kukisoma = to read it

Since kitabu belongs to the ki-/vi- noun class, the object marker is ki-.

This is a very common pattern in Swahili:

• kitabu → object marker ki-
• kukisoma = to read it

Swahili often uses an object marker when the object has already been mentioned and is understood.

So instead of repeating kitabu, the sentence says:

• kukisoma = to read it

This makes the sentence smoother and more natural. English does the same thing with it:

• return the book on time so that others can read it

Kitabu belongs to noun class 7, which usually has ki- in the singular and vi- in the plural:

• kitabu = book
• vitabu = books

This matters because agreement in Swahili depends on noun class. Since kitabu is class 7 singular, the object marker used for it is ki-.

That is why the sentence has:

• kukisoma = to read it

If the noun were plural vitabu, the object marker would be vi- instead.

Because they have different subjects.

• alisema refers to Mkutubi (the librarian) — one person
• waweze refers to wengine (others) — more than one person

Breakdown:

• a-li-sema
  • a- = he/she
  • -li- = past tense
  • -sema = say

So alisema means he/she said.

Then later:

• wa-wez-e
  • wa- = they
  • -wez- = be able
  • -e = subjunctive

So waweze means that they may be able.

Yes. That is a very natural way to understand it.

The structure ni muhimu kurudisha kitabu kwa wakati can be translated in more than one smooth English way, for example:

• It is important to return the book on time
• Returning the book on time is important

Both express the same idea. Swahili often allows this kind of flexibility in translation.

The given word order is natural and clear, but Swahili can sometimes vary word order for focus or style.

The standard flow here is:

1. Mkutubi alisema = main statement
2. ni muhimu kurudisha kitabu kwa wakati = what was said
3. ili wengine waweze kukisoma = purpose

This order is very natural for learners to imitate. Even if some rearrangement is possible in Swahili, this version is the safest and most idiomatic one to learn first.