Baba hufunga mlango wa nyuma kila usiku.

Hufunga comes from the verb kufunga, which means to close, to shut, or sometimes to fast depending on context. In this sentence, it clearly means closes/shuts.

The prefix hu- marks a habitual action, so hufunga means something like:

• usually closes
• closes regularly
• closes every night

So Baba hufunga mlango wa nyuma kila usiku means that this is a repeated habit.

By contrast, anafunga usually means:

• he is closing
• he closes/is closing in a more current or general present sense

A learner-friendly contrast:

• Baba hufunga mlango wa nyuma kila usiku. = Dad closes the back door every night.
• Baba anafunga mlango sasa. = Dad is closing the door now.

In this sentence, the subject is already stated as Baba.

Swahili often does not need a separate standalone pronoun like he when the subject is clear. Here:

• Baba = father / dad
• hufunga = habitually closes

So the sentence already tells you who does the action.

Also, in the habitual form with hu-, you commonly see the verb without the usual subject marker that you might expect in other tenses. So instead of something like a-na-funga, you get hu-funga.

Baba means father or dad.

Depending on context, it can sound like:

• Father
• Dad
• my dad / his dad / the father

Swahili does not use articles like a or the, so Baba by itself can cover meanings that English would express in different ways.

In real usage, Baba can also be used as:

• a respectful way to address an older man
• part of a name or title in some contexts

But in this sentence, it simply means Dad/Father.

Literally, mlango wa nyuma is something like door of the back/rear.

Breakdown:

• mlango = door
• wa = a linking word, often translated as of
• nyuma = back, rear, behind

Together, mlango wa nyuma means the back door or rear door.

This is a very common Swahili pattern: a noun followed by a connector plus another word describing or specifying it.

So instead of putting back directly before door as in English, Swahili says something more like door of the back.

The wa agrees with the noun class of mlango.

In Swahili, nouns belong to classes, and words connected to them often change form to match. Mlango is in the m-/mi- class, so the associative connector used here is wa.

That is why you get:

• mlango wa nyuma = back door

This wa is not the same as the plural marker for people in other contexts. Here it is a linking/associative form that connects mlango with nyuma.

Learners often just memorize common combinations like:

• mlango wa mbele = front door
• mlango wa nyuma = back door

That is a perfectly good way to start.

Not always. Nyuma has a range of related meanings, including:

• back
• behind
• rear
• in back

Examples:

• nyuma ya nyumba = behind the house
• mlango wa nyuma = back door
• kaa nyuma = sit in the back / stay behind

So in this sentence, nyuma means back/rear, not something like a person's physical back.

Kila usiku means every night.

Breakdown:

• kila = every / each
• usiku = night / at night

So:

• usiku = at night / during the night
• kila usiku = every night

The word kila makes the action clearly repetitive, which matches the habitual verb hufunga very well.

Yes. Hufunga already suggests a habitual or usual action.

So Baba hufunga mlango wa nyuma would already mean something like:

• Dad usually closes the back door.

Adding kila usiku makes it more specific:

• Dad closes the back door every night.

So the sentence uses both:

• hu- for habitual action
• kila usiku for the exact frequency

This is very natural.

The basic word order here is actually quite similar to English:

• Baba = subject
• hufunga = verb
• mlango wa nyuma = object
• kila usiku = time expression

So the pattern is:

Subject + Verb + Object + Time

That is very normal in Swahili.

The part that feels different to English speakers is mostly inside the noun phrase:

• English: back door
• Swahili: mlango wa nyuma = literally door of the back

So the sentence structure is not especially unusual; it is the way Swahili builds noun phrases that may feel new.

Possibly, depending on context.

The verb kufunga can mean:

• close
• shut
• sometimes lock, if the situation implies securing something

So hufunga mlango wa nyuma could be understood as:

• closes the back door
• shuts the back door
• sometimes locks the back door

If Swahili speakers want to be very explicit about locking, they may use a more specific expression in context. But kufunga mlango is often a natural everyday way to talk about shutting/closing up a door.

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

So mlango wa nyuma can mean:

• a back door
• the back door

The exact meaning depends on context.

In this sentence, English naturally translates it as the back door, because it sounds like a specific familiar door in the house.

That would not be the normal way to say the back door.

If you want to say back door, the natural expression is:

• mlango wa nyuma

Putting nyuma directly before or separately around mlango does not give the standard meaning here.

So it is best to learn mlango wa nyuma as a set phrase meaning back door.

Yes, but more specifically it expresses a habitual present.

It does not mean that the action is happening right this second. It means that this is what normally happens.

So the time sense is:

• present habit
• usual repeated action

That is why English often translates it with the simple present:

• Dad closes the back door every night.

But the Swahili hu- makes the habitual meaning especially clear.