Nguo tulizonunua ziko kwenye meza.

In Swahili, many nouns do not show plural by changing their form the way English nouns often do.

Nguo belongs to the N class system, and its singular and plural can look the same. The agreement elsewhere in the sentence tells you whether it is singular or plural.

Here, the plural is shown by:

• -zo- in tulizonunua
• zi- in ziko

So in this sentence, nguo is understood as clothes rather than a garment.

Tulizonunua can be broken down like this:

• tu- = we
• -li- = past tense
• -zo- = relative marker agreeing with nguo (class 10 plural)
• nunua = buy
• -a = final vowel

So the whole word means something like:

which we bought / that we bought

This is a very common Swahili pattern: a whole English clause can be packed into one verb form.

Because the relative marker must agree with the noun it refers to.

Here the noun is nguo, and in this sentence it is being treated as class 10 plural, so the relative marker is -zo-.

That is why Swahili says:

• nguo tulizo-nunua

In English, that or which does not change. In Swahili, it does change depending on the noun class.

Because ziko is used for location: it means they are located / they are there.

In Swahili, ni is not normally used for location.

So:

• Nguo ni safi = The clothes are clean.
• Nguo ziko kwenye meza = The clothes are on the table.

In your sentence, the idea is not the clothes are table-ish, but the clothes are located on the table, so ziko is the correct form.

Ziko is made of:

• zi- = subject agreement for class 10 plural
• -ko = a locative form meaning be located / be at

So ziko means:

• they are there
• they are located

Because nguo is plural here, the verb begins with zi-.

Kwenye means something like on, in, or at, depending on context.

In this sentence:

• kwenye meza = on the table

It is a very common locative word in Swahili and is often used where English would choose between in, on, or at depending on the noun.

So learners should think of kwenye as a flexible location word, not as a perfect one-word match for only one English preposition.

Because in Swahili, relative clauses normally come after the noun they describe.

So:

• nguo tulizonunua = the clothes that we bought

This is actually similar to English, since English also says the clothes that we bought, with the describing clause after clothes.

The main difference is that Swahili builds that we bought into one verb form.

No. Swahili does not have articles like the or a/an.

So nguo can mean:

• clothes
• the clothes
• sometimes even a garment / the garment

The exact meaning depends on context and agreement.

In this sentence, English translation usually uses the clothes and the table, but Swahili does not need separate words for the.

Like nguo, meza often keeps the same form in singular and plural.

So:

• meza = table
• meza = tables

Context tells you which one is meant.

In kwenye meza, the phrase simply means on the table here.

Yes, that is the most natural grammatical understanding.

A very literal structure is:

• Nguo = clothes
• tulizonunua = which we bought
• ziko = are located
• kwenye meza = on the table

So the sentence structure is:

Clothes which we bought are located on the table.

Natural English would usually be:

The clothes we bought are on the table.

The agreement would change from plural to singular.

For example, a singular version would look like:

• Nguo niliyonunua iko kwenye meza.

That would mean:

The garment / item of clothing that I bought is on the table.

Notice the changes:

• -zo- becomes -yo- in the relative form
• zi- becomes i- in iko

So even when the noun itself stays nguo, the agreement shows whether it is singular or plural.

Yes, sometimes.

• kwenye meza = on/at the table
• juu ya meza = on top of the table

Juu ya meza is more specifically on top of.
Kwenye meza is very common and natural, especially in everyday speech, for something resting on the table.

So the sentence as given is perfectly normal.