Usiposahau chenji, unaweza kurudi kwa keshia na kuuliza kuhusu ofa nyingine.

Usiposahau can be broken down as:

• u- = you (singular)
• -si- = negative marker
• -po- = conditional/time marker, often giving the idea of if/when
• -sahau = forget

So usiposahau means if you do not forget.

This is a very common Swahili pattern for negative conditions.

Because the two forms do different jobs:

• usisahau = don’t forget
  This is a negative command.
• usiposahau = if you don’t forget
  This is a condition.

So in this sentence, the speaker is not giving a command. They are setting up a condition.

Here chenji is the direct object of sahau:

• kusahau chenji = to forget the change

It is a loanword from English change, but in Swahili it behaves like a normal noun. There is no article such as the or a, because Swahili does not use articles the way English does.

Unaweza breaks down as:

• u- = you (singular)
• -na- = present tense
• -weza = be able

So literally it means you are able, and in natural English that is usually you can.

Because ku- is the infinitive marker, like to in English.

• kurudi = to return / to go back
• kuuliza = to ask

After unaweza (you can), Swahili commonly uses the infinitive:

• unaweza kurudi = you can go back
• unaweza ... kuuliza = you can ... ask

Because it is made from:

• ku- = infinitive marker
• -uliza = verb stem meaning ask

So:

• ku + uliza = kuuliza

Swahili usually keeps both vowels in writing. Both are pronounced, so the double u is normal.

In this sentence, kwa means something like to, at, or to the place/person of, depending on how you translate it naturally.

So:

• kurudi kwa keshia = go back to the cashier

With people, kwa is very often used this way.

Because keshia is a person, not a place.

• kwa is commonly used with people: to/at someone
• kwenye is more for locations, surfaces, or containers

So kwa keshia sounds natural because the destination is the cashier as a person or service point.

Here na means and.

It links two actions:

• kurudi kwa keshia = go back to the cashier
• kuuliza kuhusu ofa nyingine = ask about another offer

So the structure is:

• you can go back to the cashier and ask about another offer

In English, we might also say go back to the cashier to ask, but Swahili often uses na to connect the actions.

Kuhusu means about, regarding, or concerning.

So:

• kuuliza kuhusu ofa nyingine = ask about another offer

This is a very common pattern:

• kuuliza kuhusu jambo fulani = ask about something

Because ofa is normally treated as an N-class noun in Swahili, and the adjective -ingine agrees with that class as nyingine.

So:

• ofa nyingine = another offer / a different offer

By contrast, lingine would be used with a different noun class, for example:

• jina lingine = another name

So the form of another changes depending on the noun class.

It can mean any of those, depending on context.

So ofa nyingine could be understood as:

• another offer
• some other offer
• a different offer

Context tells you which English wording sounds best.

It is talking to one person, because of the u- subject marker:

• usiposahau
• unaweza

Both are second person singular.

If you were talking to more than one person, you would usually change it to:

• Msiposahau chenji, mnaweza kurudi kwa keshia na kuuliza kuhusu ofa nyingine.

So:

• u- = singular you
• m- / mna- = plural you