Mereka bersedia pergi.

Mereka is the standard Indonesian third-person plural pronoun, so it means they or them depending on context.

It does not mean he or she. For a singular person, Indonesian usually uses dia or ia.

A useful thing to remember:

• dia / ia = he / she
• mereka = they

Indonesian pronouns do not show gender, so dia can mean either he or she.

Usually, yes. Mereka is most commonly used for people, not for things.

So if you want to say they for objects or animals, Indonesian often just repeats the noun or leaves it understood from context instead of using mereka.

For example, mereka sounds natural for:

• the students
• my friends
• the workers

It is less natural for:

• the books
• the cars

Not exactly. Bersedia means something like:

• willing
• prepared
• ready to
• agreeing to do something

So it is not always the same as want to.

Compare:

• mau pergi = want to go
• bersedia pergi = be willing / prepared to go

Bersedia often sounds a bit more polite, formal, or deliberate than mau.

Bersedia comes from the base sedia, and the prefix ber- helps form a verb-like expression.

In this word, bersedia is a fixed and very common form meaning:

• to be willing
• to be prepared
• to be available / ready

You do not need to analyze it too deeply every time you see it; it is best learned as one common word: bersedia.

In Indonesian, when one verb follows another, you often do not need a separate word for English to.

So:

• bersedia pergi = willing to go
• literally more like willing go

This is very normal in Indonesian. English often needs to, but Indonesian usually does not.

Pergi is a verb meaning go.

In Mereka bersedia pergi, it is the second verb in the phrase. The structure is:

• Mereka = subject
• bersedia = main predicate meaning are willing / are prepared
• pergi = action they are willing to do

So pergi functions as the action connected to bersedia.

Indonesian usually does not use a verb like English am / is / are in simple sentences like this.

English:

• They are willing to go.

Indonesian:

• Mereka bersedia pergi.

This is completely normal. Indonesian often leaves out a separate to be verb where English requires one.

The word order is:

• Mereka = subject
• bersedia pergi = predicate

More specifically:

• Mereka = they
• bersedia = are willing
• pergi = go

So the overall pattern is basically:

Subject + predicate + verb complement

This is a very normal Indonesian sentence order.

Indonesian verbs usually do not change form for tense the way English verbs do.

So Mereka bersedia pergi does not explicitly mark:

• present
• past
• future

The time is understood from context, or added with time words such as:

• sekarang = now
• kemarin = yesterday
• besok = tomorrow
• akan = will

By itself, the sentence is often understood as present or general:

• They are willing to go
• They were willing to go
• They will be willing to go

Context decides.

Yes, usually bersedia sounds more formal, polite, or respectful than mau.

Compare:

• Mereka mau pergi. = They want to go.
• Mereka bersedia pergi. = They are willing to go.

You often hear bersedia in:

• polite offers
• requests
• formal speech
• written Indonesian

For example:

• Apakah Anda bersedia membantu? = Are you willing to help?

So in tone, bersedia is often more careful and courteous than mau.

Yes, but the meaning shifts a little.

• bersedia = willing / agreeable / prepared
• siap = ready

So:

• Mereka bersedia pergi = they are willing to go
• Mereka siap pergi = they are ready to go

Sometimes these ideas overlap, but they are not identical. Someone can be:

• willing but not fully ready
• ready but not especially willing

Sometimes, yes, if the context already makes it clear who is being talked about.

For example, in conversation:

• Bersedia pergi? could mean Are they willing to go? or Willing to go?, depending on context.

But if you want a clear full sentence, keeping mereka is best:

• Mereka bersedia pergi.

Indonesian often omits subjects in context, but learners should first get comfortable with the full form.

You can negate bersedia with tidak:

• Mereka tidak bersedia pergi.

That means:

• They are not willing to go.

This is the normal way to make the sentence negative.

Structure:

• Mereka = they
• tidak = not
• bersedia = willing
• pergi = go

A simple pronunciation guide is:

ber-SEH-dee-a

Roughly:

• ber as in buh-r with a light r
• se like seh
• di like dee
• a like ah

And pergi is roughly:

PAIR-gi or PUHR-gi, depending on accent and how you hear the vowel

Indonesian pronunciation is generally consistent, so once you learn the sound system, words are usually pronounced close to how they are spelled.