Mama anapaka mafuta kwenye kisogo cha mtoto.

Anapaka has three main parts:

• a- = he/she
• -na- = present/progressive marker, often understood as is ...-ing
• -paka = apply, smear, spread

So anapaka means he/she is applying or he/she applies, depending on context. In this sentence, it is naturally understood as she is applying.

Because Swahili usually builds that information into the verb itself.

In anapaka:

• a- already tells you the subject is he/she
• -na- gives the present/progressive sense

So Swahili does not need separate words for she and is here.
You could add yeye for emphasis, but normally it is unnecessary.

Mafuta usually means oil, fat, grease, or sometimes ointment/lotion, depending on context.

It looks plural because it belongs to a noun class that often has ma- nouns, but in real usage mafuta is very often treated like an uncountable substance word, even when English uses singular oil.

So:

• mafuta = oil / oils / grease / ointment, depending on context

A useful thing to remember is that Swahili noun class does not always match English singular/plural logic.

Kwenye is a common locative word meaning something like:

• on
• in
• at
• sometimes to

The exact English translation depends on context.

Here, kwenye kisogo means on the back of the head / at the nape area. So kwenye is showing where the oil is being applied.

Kisogo means the back of the head, especially the nape or the area where the head meets the neck.

So it is not the whole head. It refers to a specific part at the back.

That is why the sentence is more specific than just saying oil is being applied on the child’s head.

Because the possessive link in Swahili agrees with the noun being possessed.

Here, the possessed noun is kisogo.
Kisogo belongs to the ki-/vi- noun class, so the possessive connector is cha.

So:

• kisogo cha mtoto = the child’s nape / back of the head

It is not based on mtoto. It is based on kisogo.

Compare:

• kitabu cha mtoto = the child’s book
• nyumba ya mtoto = the child’s house

The connector changes to match the first noun.

Several noun classes are showing up here:

• mama → human noun; it takes the class 1 singular agreement pattern in the verb
• mtoto → class 1 singular
• kisogo → class 7 singular (ki-/vi- pattern)
• mafuta → class 6

You can see agreement in places like:

• a- in anapaka for the singular human subject
• cha in kisogo cha mtoto because kisogo is class 7

Noun classes are very important in Swahili because they control agreement across the sentence.

This is the normal, neutral order:

• Mama = subject
• anapaka = verb
• mafuta = direct object
• kwenye kisogo cha mtoto = location/place phrase

So the pattern is basically:

Subject + Verb + Object + Location

That is a very common Swahili sentence structure.
Swahili can sometimes move things around for emphasis, but this version is straightforward and natural.

No. Kupaka is a broader verb. It can mean:

• to smear
• to spread
• to apply
• to coat
• sometimes to paint

The object tells you what kind of applying is happening.

For example:

• kupaka mafuta = apply oil
• kupaka rangi = paint
• kupaka dawa = apply medicine/ointment

So in this sentence, mafuta tells you that the action is applying oil.

Often, yes. Swahili frequently uses a locative ending -ni to express place.

So kisogoni can mean something like at/on the nape.

That means learners may sometimes see a locative idea expressed in two ways:

• with kwenye + noun
• with a locative -ni form

In this sentence, kwenye kisogo is very clear and easy to understand.

Because Swahili does not have articles like English a and the.

So a noun like mama can mean:

• mother
• a mother
• the mother
• mum

depending on context.

The same is true for mtoto:

• child
• a child
• the child

Context tells you which meaning is intended.

You change the tense by changing the verb prefix pattern.

Examples:

• Mama anapaka mafuta kwenye kisogo cha mtoto. = Mother is applying oil...
• Mama alipaka mafuta kwenye kisogo cha mtoto. = Mother applied oil...
• Mama atapaka mafuta kwenye kisogo cha mtoto. = Mother will apply oil...
• Mama hapaki mafuta kwenye kisogo cha mtoto. = Mother is not applying / does not apply oil...

So once you understand the verb shape, you can reuse the rest of the sentence easily.