Rahma alisuuza mchele mara mbili kabla ya kuupika.

It has three main parts:

• a- = third-person singular subject marker (he/she)
• -li- = past tense marker
• -suuza = verb stem meaning rinse or wash off

So alisuuza means he/she rinsed.

In this sentence, with Rahma as the subject, it is understood as Rahma rinsed.

Not by itself. In Swahili, a- can mean he or she. The verb does not usually show gender.

So:

• alisuuza = he rinsed or she rinsed
• the name Rahma and the context tell you that English should use she

suuza usually means to rinse, to wash off, or to cleanse by washing with water.

In this sentence, it is most naturally understood as rinsed the rice before cooking it.

Depending on context, English might sometimes translate it as washed, but rinsed is the more precise idea here.

mchele means rice, usually in the sense of uncooked rice / rice grains.

That fits the sentence well, because the rice is then cooked afterward.

A useful grammar point: mchele belongs to a noun class that later affects the object marker in kuupika.

mara mbili means twice.

Literally, it is:

• mara = time / occasion
• mbili = two

So mara mbili = two times = twice

Some similar expressions:

• mara moja = once
• mara tatu = three times

It means before cooking it.

Breakdown:

• kabla = before
• ya = a linking word used here after kabla
• kuupika = to cook it

So the full phrase means before cooking it.

That u is an object marker. It refers back to mchele.

So:

• ku-pika = to cook
• ku-u-pika = to cook it

The -u- agrees with mchele.

So kuupika does not just mean to cook in general. It specifically means to cook it, with it = the rice.

Because object markers in Swahili depend on the noun class of the noun being referred to.

Here, mchele takes the class agreement that uses u- in this kind of reference.

So when Swahili says kuupika, the u is there because the verb is referring back to mchele.

This is a very common feature of Swahili grammar: verbs often show agreement with nouns, not just with subjects but sometimes with objects too.

ku- is the infinitive marker.

It is the part that gives the meaning to cook or cooking.

So:

• pika = cook
• kupika = to cook / cooking
• kuupika = to cook it / cooking it

After kabla ya, Swahili commonly uses this infinitive form.

Because kabla ya is the normal pattern for saying before when it is followed by a noun or an infinitive phrase.

So Swahili uses:

• kabla ya chakula = before food
• kabla ya kupika = before cooking
• kabla ya kuupika = before cooking it

You can think of kabla ya as a set expression meaning before.

Yes, that is possible in some contexts, but it would be less explicit.

• kabla ya kupika = before cooking
• kabla ya kuupika = before cooking it

The version with -u- makes it very clear that the thing being cooked is the rice mentioned earlier.

So kuupika is more specific.

It is pronounced with both u vowels present:

• ku-u-pika

So you should not reduce it to a single short u.

In slow, careful speech, it sounds roughly like:

• koo-oo-PEE-ka

In natural speech, the two u sounds may run together, but they are still there grammatically.

Yes. It is very natural.

The structure is:

• Rahma = subject
• alisuuza = verb
• mchele = object
• mara mbili = adverbial phrase (twice)
• kabla ya kuupika = time clause (before cooking it)

So the sentence follows a very normal pattern:

Subject + Verb + Object + other information

More or less, yes:

• Rahma = Rahma
• alisuuza = rinsed
• mchele = rice
• mara mbili = two times / twice
• kabla ya kuupika = before cooking it

A fairly literal version would be:

Rahma rinsed rice two times before cooking it.

More natural English would usually be:

Rahma rinsed the rice twice before cooking it.