Asha alisema kuwa modemu ikiwashwa tena, darasa la mtandaoni litaanza mara moja.

Here kuwa means that and introduces a reported statement after alisema (said).

So:

• Asha alisema kuwa ... = Asha said that ...

In everyday Swahili, kuwa and kwamba can both be used this way.

Yes. Asha alisema kwamba ... would also be natural.

There can be slight style differences depending on speaker or region, but in a sentence like this, both commonly mean that after said.

Alisema breaks down like this:

• a- = he/she
• -li- = past tense
• sema = say

So alisema means he/she said.
Because the subject is Asha, it means Asha said.

Ikiwashwa means if it is switched on or when it is switched on, depending on context.

A useful breakdown is:

• i- = subject marker for the noun class of modemu
• -ki- = conditional/time marker, often if/when
• washwa = be switched on / be lit, the passive form of washa

So:

• washa = switch on
• washwa = be switched on
• ikiwashwa = if it is switched on

In this sentence, English naturally uses if.

The i- agrees with modemu.

Modemu is a loanword and is typically treated like a class 9 noun in Swahili. Class 9 singular often takes the subject marker i-.

So:

• modemu ikiwashwa = if the modem is switched on

That i- is basically the it referring back to modemu.

This is an active vs. passive difference:

• washa = switch on something
• washwa = be switched on

Examples:

• Ninawasha modemu. = I am switching on the modem.
• Modemu inawashwa. = The modem is being switched on.

So in your sentence, ikiwashwa is passive because the modem is receiving the action.

Tena means again.

So:

• modemu ikiwashwa tena = if the modem is switched on again

It shows that the modem had already been on before, or that it needs to be turned back on.

Darasa la mtandaoni means online class.

Literally, it is something like:

• darasa = class
• la = linking word meaning of
• mtandaoni = online / on the network

So the phrase is literally class of online/internet.

Why la? Because darasa belongs to noun class 5, and the connector used with class 5 is la.

This pattern is very common in Swahili:

• kitabu cha mwanafunzi = the student’s book
• darasa la mtandaoni = online class

Because darasa is the subject of that verb, and darasa is a class 5 noun.

Class 5 uses the subject marker li-.

So:

• li- = class 5 subject marker
• -ta- = future tense
• anza = begin/start

Therefore:

• litaanza = it will start

Since darasa means class, the full idea is:

• darasa ... litaanza = the class ... will start

Litaanza is future tense.

Breakdown:

• li- = subject marker agreeing with darasa
• -ta- = future
• anza = start

So litaanza means it will start.

Literally, yes, it is made from:

• mara = time/occasion
• moja = one

But as a fixed expression, mara moja usually means immediately / right away / at once.

So here:

• litaanza mara moja = it will start immediately

This is a very common phrase and is best learned as a set expression.

That is a normal and natural Swahili word order.

The sentence is structured like this:

• Asha alisema kuwa ...
• modemu ikiwashwa tena = conditional clause
• darasa la mtandaoni litaanza mara moja = main clause

So Swahili, like English, can put the if clause before the main result clause:

• If the modem is switched on again, the online class will start immediately.

You could also sometimes rearrange similar sentences, but this order is very common.

No separate article is used here.

Swahili usually does not have direct equivalents of English the or a/an. Context tells you whether something is definite or indefinite.

So:

• modemu can mean a modem or the modem
• darasa can mean a class or the class

In this sentence, context makes the modem and the online class the most natural English translation.

Yes. The -ki- form can often mean if or when, depending on context.

So modemu ikiwashwa tena could be understood as:

• if the modem is switched on again
• when the modem is switched on again

In this sentence, English usually prefers if because it sounds like a condition that must be met before the class can begin.