Kesho asubuhi, nitamwonyesha mwalimu daftari langu jipya.

Kesho means tomorrow and asubuhi means morning. Together, kesho asubuhi means tomorrow morning.

Swahili often builds time expressions this way, using more than one word rather than a single combined form.

It can be divided like this:

• ni- = I
• -ta- = future tense, will
• -mw- = him/her
• -onyesha = show

So nitamwonyesha means I will show him/her or, in this sentence, I will show ... to him/her.

This is very typical Swahili verb structure: one verb word can contain the subject, tense, object, and verb root.

It refers to mwalimu.

So the -mw- object marker is standing for the teacher. In Swahili, this marker does not show gender, so it can mean him or her.

Because in Swahili, it is very common to use an object marker in the verb and also say the noun itself, especially when the object is a specific person.

So:

• mw- links the verb to the person
• mwalimu makes it explicit who that person is

This is normal and natural Swahili, not repetition in a bad sense.

Here mwalimu is the person being shown to.

The thing being shown is:

daftari langu jipya = my new notebook

So the structure is basically:

• I will show the teacher my new notebook

Swahili can express this as -onyesha mtu kitu = show someone something.

Because with -onyesha, Swahili can use a pattern like:

onyesha mtu kitu = show someone something

So the order here is:

• recipient: mwalimu
• thing shown: daftari langu jipya

Another possible way to say a similar idea is:

Nitaonyesha daftari langu jipya kwa mwalimu
= I will show my new notebook to the teacher

In Swahili, modifiers usually come after the noun.

So:

• daftari = notebook
• langu = my
• jipya = new

That gives:

daftari langu jipya
literally: notebook my new

This order is normal in Swahili.

Because possessives in Swahili agree with the noun class of the noun they describe.

The possessive stem for my is -angu.
With daftari, it becomes langu.

So:

• daftari langu = my notebook

If the noun belonged to a different noun class, the possessive form would change.

Because adjectives also have to agree with the noun class.

The adjective stem is -pya = new.
Since daftari is a class 5 singular noun, the adjective takes the class 5 agreement prefix ji-, giving:

jipya = new (agreeing with daftari)

So:

• daftari jipya = new notebook

In the plural, you would get:

• madaftari mapya = new notebooks

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

So:

• mwalimu can mean a teacher or the teacher
• daftari can mean a notebook or the notebook

Context tells you which meaning is intended.

It can mean either.

Swahili does not mark grammatical gender the way English often does. So:

• mwalimu = teacher of any gender
• mw- in the verb can mean him or her

You only know the gender if the context makes it clear.

Yes, sometimes.

Kesho asubuhi is placed first because time expressions are often fronted in Swahili. That gives a natural opening like Tomorrow morning, ...

You could also say:

Nitamwonyesha mwalimu daftari langu jipya kesho asubuhi.

And another natural version is:

Kesho asubuhi, nitaonyesha daftari langu jipya kwa mwalimu.

These versions are slightly different in structure or emphasis, but the basic meaning stays similar.

No. It is mainly a writing choice.

The comma helps separate the opening time phrase from the rest of the sentence, but you will also see the sentence written without it:

Kesho asubuhi nitamwonyesha mwalimu daftari langu jipya.

Both are acceptable.