Dumu lile lipo nyuma ya nyumba karibu na tanki.

The choice of demonstrative depends on both noun class and sometimes distance.

• dumu belongs to noun class 5 in the singular
• The class 5 demonstratives are:
  • hili = this
  • hilo = that (near the listener or previously mentioned)
  • lile = that (over there / more distant)

So dumu lile means that jerrycan/drum over there.

The important part for agreement is the li- / l- pattern for class 5.

lipo means something like it is there / it is located.

It is made of:

• li- = subject marker for class 5
• -po = a locative ending meaning roughly there / at that place

So:

• dumu lile lipo... = that jerrycan is located...

This is very common in Swahili when talking about where something is.

In Swahili, ni can link a subject to a noun or description:

• Yeye ni mwalimu = He/she is a teacher

But for location, Swahili very often uses forms like:

• yupo
• kipo
• lipo
• zipo

depending on the noun class.

So:

• Dumu lile ni nyuma ya nyumba is not the normal way to say it
• Dumu lile lipo nyuma ya nyumba is the natural way

In short:

• ni = identity/classification
• lipo = location/existence in a place

nyuma means back / rear / behind, but in Swahili it behaves like a noun in this structure.

So literally:

• nyuma ya nyumba = the back of the house

That is how Swahili expresses behind the house.

The ya is the connector meaning of here. It agrees with the noun class of nyuma.

Very common expressions work the same way:

• mbele ya nyumba = in front of the house
• ndani ya nyumba = inside the house
• juu ya meza = on top of the table
• chini ya mti = under the tree

Because karibu na is the normal pattern for saying near something.

So:

• karibu na tanki = near the tank

You should learn karibu na as a chunk.

Examples:

• karibu na shule = near the school
• karibu na barabara = near the road
• karibu na nyumba = near the house

So even though nyuma uses ya, karibu uses na.

You can tell from the agreement words.

In the sentence, both of these point to class 5 singular:

• lile
• lipo

That tells you dumu is being treated as a class 5 noun here.

A useful principle in Swahili is:

You often recognize a noun’s class from the words agreeing with it, not just from the noun itself.

That is especially helpful because many borrowed nouns do not have obvious prefixes.

The plural of dumu is usually madumu, which is class 6.

So the sentence becomes:

Madumu yale yako nyuma ya nyumba karibu na tanki.

Changes:

• dumu → madumu
• lile → yale
• lipo → yako

So:

• Dumu lile lipo... = That jerrycan is...
• Madumu yale yako... = Those jerrycans are...

Both are part of the location.

The sentence is giving a more precise description:

• nyuma ya nyumba = behind the house
• karibu na tanki = near the tank

So the jerrycan is:

1. behind the house
2. specifically near the tank

This is very natural in Swahili, just like in English:

• It is behind the house, near the tank.

The normal order here is very natural:

• Dumu lile = the subject
• lipo = is located
• nyuma ya nyumba = behind the house
• karibu na tanki = near the tank

So:

Dumu lile lipo nyuma ya nyumba karibu na tanki.

You can sometimes move location phrases for emphasis, but this order is the safest and most neutral for learners.

Swahili does not have articles like a or the.

Whether English uses a, an, or the depends on context and is often expressed in Swahili by:

• context
• demonstratives like hili/hilo/lile
• possessives
• word order and shared knowledge

So dumu lile already gives a definite meaning:

• that jerrycan

You do not need a separate word for the.

Yes. tanki is a borrowed noun, and Swahili has many borrowed nouns.

Borrowed nouns do not always show their noun class clearly from their shape, so agreement and usage help you learn them.

In this sentence, tanki appears inside the phrase:

• karibu na tanki = near the tank

Because it comes after na, you do not see much agreement on it here. But yes, it is normal Swahili to use borrowed nouns like this.

Swahili has several locative endings, especially:

• -po = at that place / there
• -ko = around there / in that general place
• -mo = inside there / within there

In everyday speech, -po and -ko are often the most noticeable for learners.

Here, lipo is perfectly natural for saying where the jerrycan is located.

At beginner level, the most useful thing is to understand:

• lipo = it is there / it is located

You do not need to master all the subtle differences immediately.

A common question would be:

Dumu lile liko wapi? = Where is that jerrycan?

Then the answer could be:

Lipo nyuma ya nyumba karibu na tanki.
= It is behind the house near the tank.

Notice that in questions, many speakers often use liko wapi? very naturally, while the answer may use lipo.... Both are part of common locative usage in Swahili.