Asha alipopoteza kalamu yake, aliomba penseli kwa Juma.

It is one verb form made of several parts:

• a- = third-person singular subject (he/she)
• -li- = past tense
• -po- = when
• -poteza = lose

So alipopoteza means when she lost or when he lost.

One important thing for English speakers: Swahili often packs ideas that English would spread across several words into a single verb.

Here -po- is the part that gives the sense of when.

So compare:

• alipoteza = she lost
• alipopoteza = when she lost

This is a very common Swahili pattern for time clauses.

Because Swahili normally requires a subject marker on the verb, even when the full subject noun is also stated.

So:

• Asha aliomba = Asha asked
• literally, this feels a bit like Asha she asked, though that is just normal grammar in Swahili

The same happens in alipopoteza and aliomba.

No. a- means he or she.

Swahili does not usually mark gender in verb subject markers. The sentence is understood as she because Asha is a female name.

So:

• Asha aliomba = Asha asked / she asked
• Juma aliomba = Juma asked / he asked

The verb form itself is the same.

Because poteza is used for lose something, while potea is more like get lost / disappear / be lost.

Compare:

• Asha alipoteza kalamu yake = Asha lost her pen
• Kalamu yake ilipotea = Her pen got lost / disappeared

So in this sentence, Asha is the one who lost the pen, so poteza is the right choice.

Because the possessive agrees with the thing possessed, not with the owner.

Here, kalamu belongs to noun class 9/10, so the possessive form is yake.

So:

• kalamu yake = his/her pen
• kitabu chake = his/her book
• mwalimu wake = his/her teacher

Notice that the possessive changes to match the noun:

• kalamu → yake
• kitabu → chake
• mwalimu → wake

So wake would not match kalamu.

No. yake can mean his, her, or its, depending on context.

Swahili does not mark gender here. In this sentence, because the owner is Asha, we understand kalamu yake as her pen.

So:

• kalamu yake = his pen / her pen / its pen, depending on context

kuomba usually means to ask for, to request, or to beg for.

That fits this sentence because Asha wants a pencil.

• aliomba penseli = she asked for a pencil

By contrast, kuuliza is more often used for asking a question.

Compare:

• Aliomba penseli kwa Juma. = She asked Juma for a pencil.
• Aliuliza swali. = She asked a question.

This is a very useful distinction for learners:

• kuomba = ask for something
• kuuliza = ask a question

With kuomba, Swahili often uses kwa before the person you are asking.

So:

• aliomba penseli kwa Juma = she asked Juma for a pencil
• more literally, she requested a pencil from Juma

English and Swahili organize this idea differently. English often says:

• ask someone for something

Swahili commonly says:

• omba something kwa someone

So kwa Juma identifies the person she asked.

Because both are loanwords that usually behave like class 9/10 nouns, and many nouns in that class have the same form in singular and plural.

So:

• kalamu can mean pen or pens
• penseli can mean pencil or pencils

Context tells you which one is meant.

For example:

• kalamu moja = one pen
• kalamu mbili = two pens

In your sentence, the meaning and context show that singular is intended.

Because Swahili does not have articles like English a and the.

So a noun like kalamu can mean:

• a pen
• the pen

and penseli can mean:

• a pencil
• the pencil

The exact meaning comes from context, not from a separate article word.

Yes, a little.

For example, this is also natural:

• Alipopoteza kalamu yake, Asha aliomba penseli kwa Juma.

That version may sound especially natural because the when clause comes first, and then the main clause follows.

But whichever order you use, the verb still keeps its subject marker:

• Asha aliomba...
• Alipopoteza..., Asha aliomba...

So the word order is somewhat flexible, but the verb structure stays important.