Daktari alisema kunyonyesha kunamsaidia mtoto kuwa na afya nzuri.

Alisema breaks down like this:

• a- = he/she
• -li- = past tense
• -sem- = say
• -a = final vowel

So alisema means he said or she said.

Daktari does not show gender. It can mean doctor, whether male or female. You only know from context.

In Swahili, after kusema (to say), the word kwamba (that) is often optional.

So both of these work:

• Daktari alisema kunyonyesha kunamsaidia mtoto...
• Daktari alisema kwamba kunyonyesha kunamsaidia mtoto...

The version without kwamba is very normal.

It is an infinitive verb form being used like a noun.

• ku- = infinitive marker, like to
• -nyonyesha = breastfeed

So kunyonyesha literally means to breastfeed, but in this sentence it functions like breastfeeding in English.

That is why it can be the subject of the next verb:

• Kunyonyesha kunamsaidia...
• Breastfeeding helps...

Because the subject is kunyonyesha, and infinitives used as nouns belong to noun class 15, which takes the subject marker ku-.

So kunamsaidia can be broken down as:

• ku- = subject marker agreeing with kunyonyesha
• -na- = present/current tense
• -m- = him/her object marker
• -saidia = help

So the idea is:

• kunyonyesha kunamsaidia mtoto
• breastfeeding helps the child

The first ku- in kunyonyesha is the infinitive marker. The ku- in kunamsaidia is a subject marker agreeing with that infinitive subject.

Because the doctor’s statement is being reported as a general truth or a current fact.

So:

• alisema = said
• kunamsaidia = helps / is helping

Swahili does not have to shift the second verb into the past just because the reporting verb is past. This is very natural when the content is still true.

The -m- is the object marker meaning him/her, and it refers to mtoto.

This kind of object marking is very common in Swahili, especially with people and other animate objects.

So:

• kunamsaidia mtoto = it helps the child
• literally, something like it helps him/her, the child

You may also hear forms without the object marker in some contexts, but with an animate object like mtoto, using -m- is very natural.

After kusaidia (to help), Swahili can use another infinitive to show what someone is helped to do or be.

So:

• kumsaidia mtoto kuwa na afya nzuri
• to help the child have good health / be healthy

Here:

• mtoto = the child
• kuwa = to be
• na afya nzuri = with good health / to have good health

So kuwa is another infinitive, linked to kusaidia.

Literally, it means to be with good health.

In Swahili, kuwa na is a very common way to express to have:

• kuwa na kitabu = to have a book
• kuwa na afya nzuri = to have good health

So even though English may prefer be healthy, Swahili often says it this way.

Because afya belongs to noun class 9/10, and adjectives must agree with the noun class.

The adjective stem is -zuri. With a class 9 noun like afya, it becomes:

• afya nzuri = good health

Compare:

• mtoto mzuri = a good child
• afya nzuri = good health

So the adjective changes form depending on the noun it describes.

It can be either, depending on context.

• mtoto = a child or the child
• watoto = children

In a sentence like this, mtoto can be a generic singular, meaning something like a child in general.

So the sentence can express a general fact, not only something about one particular child.

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

So daktari can mean:

• a doctor
• the doctor

And mtoto can mean:

• a child
• the child

Context tells you which meaning is intended.