Tafadhali punguza sauti ya redio, mtoto analala chumbani.

Because punguza is a command form, meaning lower/reduce! In Swahili, commands to one person usually do not need an explicit subject.

• punguza = lower / reduce
• wewe punguza would be possible for emphasis, but normally unnecessary

So Tafadhali punguza... is a natural way to say Please lower...

Tafadhali means please. It makes the command more polite.

In Swahili, tafadhali can appear in different places, such as:

• Tafadhali punguza sauti ya redio.
• Punguza sauti ya redio, tafadhali.

Both are polite. Putting it at the beginning is very common.

Swahili usually links nouns like the volume of the radio with a possessive connector. Here that connector is ya.

• sauti = sound / volume
• redio = radio
• sauti ya redio = the sound/volume of the radio

So ya here works like of in English.

The connector changes according to noun class. Sauti belongs to a noun class that uses ya for this kind of possessive connection.

So:

• sauti ya redio = sound/volume of the radio

Even though English speakers often just memorize this at first, the bigger rule is that agreement words in Swahili change with noun class.

Analala breaks down like this:

• a- = he/she
• na- = present tense
• lala = sleep

So analala means he/she is sleeping.

In this sentence:

• mtoto analala = the child is sleeping

This is a very good question, because both can relate to sleep, but they are slightly different.

• analala = is sleeping / is in the act of sleeping
• amelala = is asleep / has gone to sleep

In everyday speech, both may fit in similar situations, but analala emphasizes the ongoing action more clearly. In this sentence, it works well because the speaker is explaining why the radio volume should be lowered.

Because mtoto refers to a person, and singular human nouns normally take the subject marker a- for he/she.

So:

• mtoto analala = the child is sleeping

Even though mtoto does not visibly look like he or she, Swahili grammar treats it as a singular animate noun, so the verb agrees with it using a-.

Chumbani means in the room.

It comes from:

• chumba = room
• chumbani = in the room

The ending -ni is a common locative ending in Swahili. It often gives the meaning in, at, or to a place.

Examples:

• nyumba = house
• nyumbani = at home / in the house

So here:

• mtoto analala chumbani = the child is sleeping in the room

Not exactly. Chumba just means room, so chumbani means in the room. Depending on context, English might translate it as in the bedroom, but the Swahili itself does not specifically say bedroom.

If you wanted to be more specific, you would use a more specific noun phrase.

Swahili often allows two clauses to stand next to each other when the relationship is obvious from context.

So:

• Tafadhali punguza sauti ya redio, mtoto analala chumbani.

naturally means something like:

• Please lower the volume of the radio; the child is sleeping in the room.

English might prefer because, but Swahili does not always need an explicit connector here.

If you wanted to make the reason fully explicit, you could say something like:

• Tafadhali punguza sauti ya redio kwa sababu mtoto analala chumbani.

That means Please lower the volume of the radio because the child is sleeping in the room.

It can mean sound, but in this context it is naturally understood as volume.

So punguza sauti ya redio literally looks like reduce the sound of the radio, but idiomatically it means:

• lower the volume of the radio
• turn the radio down

This is a very normal way to express that idea in Swahili.

Yes. Shusha sauti ya redio is also a common way to say turn the radio down or lower the volume.

The difference is roughly this:

• punguza = reduce
• shusha = lower

In this sentence, punguza sauti is completely correct and natural.

Redio is a loanword, and it is generally treated like a noun in the N/N class (often called class 9/10). That is one reason the connector in sauti ya redio is ya.

A lot of borrowed words in Swahili behave this way, especially when they do not change form between singular and plural.

The dh in tafadhali is pronounced like the th in this, not like the th in thin.

A rough guide:

• ta-fa-dha-li

Also:

• ch in chumbani sounds like ch in chair
• r in redio is typically tapped or rolled lightly
• Swahili vowels are usually pronounced clearly:
  • a as in father
  • e as in bet but often cleaner
  • i as in machine
  • o as in go but without a glide
  • u as in flute

So Swahili pronunciation is often more regular than English spelling.