Sokoni, tulinunua papai moja, zabibu kidogo, na matango mawili kwa ajili ya saladi.

Sokoni comes from soko meaning market. The ending -ni is a locative ending, so sokoni means at the market, in the market, or sometimes to the market, depending on context.

This -ni ending is very common in Swahili:

• nyumbani = at home
• shuleni = at school
• mezani = on the table

So in this sentence, Sokoni sets the location: At the market, ...

Yes, that is normal. Swahili often puts a location or time expression first for emphasis or to set the scene.

So:

• Sokoni, tulinunua... = At the market, we bought...
• Tulinunua... sokoni = We bought... at the market

Both are possible. Starting with Sokoni makes the location the topic of the sentence, much like English At the market, we bought...

Tulinunua can be broken down like this:

• tu- = we
• -li- = past tense marker
• nunua = buy

So tulinunua means we bought.

The dictionary form of the verb is kununua = to buy.
When you conjugate it, the infinitive prefix ku- drops off:

• kununua = to buy
• ninanunua = I am buying / I buy
• tulinunua = we bought

This is because Swahili numbers from one to five often agree with the noun class.

Here:

• papai is singular
• matango is plural in the ma- noun class

So:

• moja = one
• mawili = two for ma- class nouns

That is why you get:

• papai moja = one papaya
• matango mawili = two cucumbers

This kind of agreement is a very important part of Swahili grammar.

Swahili nouns belong to noun classes, and many singular/plural pairs change form.

In this sentence:

• papai = one papaya
• plural: mapapai = papayas

And:

• tango = one cucumber
• plural: matango = cucumbers

So matango mawili literally means cucumbers two, with the plural noun and the matching plural form of two.

Kidogo means a little or a small amount. It is often used after nouns to mean some or a little bit of something.

So zabibu kidogo means something like:

• a little grape
• more naturally in English, some grapes or a small amount of grapes

A useful comparison:

• kidogo focuses on small amount
• chache means a few, especially for countable items

So:

• zabibu kidogo = a small amount of grapes / some grapes
• zabibu chache = a few grapes

Both can make sense, but kidogo emphasizes quantity as a small amount rather than a specific small number.

It can function as either, depending on context.

Many Swahili nouns in this class have the same form in singular and plural, and zabibu is often treated as a collective or mass-like noun, especially when talking about grapes in general.

So:

• zabibu can mean a grape
• zabibu can also mean grapes

The quantity word or the context tells you what is meant:

• zabibu moja = one grape
• zabibu mbili = two grapes
• zabibu kidogo = some grapes / a small amount of grapes

Kwa ajili ya is a common expression meaning:

• for
• for the purpose of
• for the sake of

So:

• kwa ajili ya saladi = for salad

It is best learned as a fixed phrase. Literally, it is built from several parts, but for most learners the most useful thing is to remember the whole expression as meaning for in a purpose-related sense.

Examples:

• kwa ajili ya watoto = for the children
• kwa ajili ya kazi = for work
• kwa ajili ya saladi = for salad

The short answer is that ya is the connector used after ajili in this fixed expression.

For a beginner, the easiest approach is to memorize:

• kwa ajili ya = for

If you want a little more grammar: ya is a linking word that agrees with ajili, which belongs to a noun class that uses ya as its connector.

So even though the whole phrase means for, the ya is not optional here. You normally say:

• kwa ajili ya saladi not
• kwa ajili saladi

Swahili generally does not have articles like English a/an/the.

So:

• papai moja can mean one papaya
• matango mawili can mean two cucumbers
• saladi can mean salad or the salad, depending on context

English requires articles much more often than Swahili does. In Swahili, definiteness is usually understood from context rather than shown with a separate word.

Na means and. It works much like English and when joining nouns.

So the list is:

• papai moja
• zabibu kidogo
• na matango mawili

This is the normal way to join the final item in a series.

Also, na is a very common word in Swahili and can mean several things in different contexts, but here it simply means and.

Yes, often you can.

Both can mean at the market:

• sokoni
• kwenye soko

In many situations, sokoni is the shorter and more straightforward form. Kwenye soko is also natural, but it uses a preposition-like word plus the noun instead of the locative ending -ni.

For a learner, it is useful to recognize that Swahili often has more than one way to express location:

• sokoni = at/in the market
• kwenye soko = at/on/in the market, depending on context

In this sentence, sokoni is perfectly natural and elegant.