Materi presentasi itu dicetak sebelum rapat dimulai.

In Indonesian, itu usually comes after the noun phrase it modifies.

So:

• materi presentasi itu = that/the presentation material
• not itu materi presentasi in this kind of structure

This is normal Indonesian word order:

• buku itu = that book / the book
• rumah besar itu = that big house

Here, itu helps mark the noun as something specific or already known from context.

It is a noun phrase made of:

• materi = material, content, materials
• presentasi = presentation

So materi presentasi means presentation material(s) or materials for the presentation.

This kind of noun + noun combination is very common in Indonesian. The second noun functions like a modifier:

• rapat kerja = work meeting
• buku pelajaran = textbook / lesson book
• ruang rapat = meeting room

So materi presentasi is a compact way to say material related to a presentation.

Because this sentence uses the passive voice.

• mencetak = to print, to print something
• dicetak = be printed / was printed

So:

• Saya mencetak materi itu. = I printed the material.
• Materi itu dicetak. = The material was printed.

In your sentence, the focus is on the presentation material, not on who did the printing. That is why passive is natural here.

No. They are different.

• di- attached to a verb is a passive prefix
• di written separately is a preposition meaning in, at, on

Compare:

• dicetak = printed
• di kantor = at the office

A good rule:

• If it is attached to a verb, it is usually the passive prefix.
• If it is written separately before a place noun, it is usually the preposition.

Yes, the agent is not stated, and that is completely normal.

Indonesian often uses the passive when the doer is:

• unknown
• obvious
• unimportant
• less important than the thing affected

So Materi presentasi itu dicetak sebelum rapat dimulai does not tell us who printed it.

If you want to add the doer, you can say:

• Materi presentasi itu dicetak oleh staf administrasi sebelum rapat dimulai.

Here oleh means by.

Both can be possible, but they are a little different in feel.

• rapat dimulai = the meeting was started / the meeting began
• rapat mulai = the meeting starts / began

In many contexts, dimulai sounds slightly more formal or event-focused. It is very common in official, written, or formal Indonesian.

Examples:

• Acara dimulai pukul delapan. = The event starts at eight.
• Rapat dimulai setelah makan siang. = The meeting starts after lunch.

Meanwhile, mulai without di- is also common, especially in everyday speech.

So in your sentence, rapat dimulai sounds very natural and fairly formal.

Formally, yes, di- is the passive marker. But in real usage, forms like dimulai are often used almost like ordinary intransitive event verbs in English, especially with things like:

• rapat dimulai = the meeting begins
• acara dimulai = the event begins
• kelas dimulai = the class begins

So even though it has passive morphology, learners will often find it easiest to understand it as the normal way to say that an event begins, especially in formal contexts.

Sebelum means before and introduces a time clause.

In this sentence:

• sebelum rapat dimulai = before the meeting began / before the meeting started

So the structure is:

• main clause: Materi presentasi itu dicetak
• time clause: sebelum rapat dimulai

This is very common in Indonesian:

• Saya makan sebelum berangkat. = I ate before leaving.
• Dia datang sebelum acara dimulai. = He came before the event began.

Yes. Indonesian allows that very naturally.

You can say:

• Materi presentasi itu dicetak sebelum rapat dimulai.
• Sebelum rapat dimulai, materi presentasi itu dicetak.

Both are grammatical. The difference is mostly one of emphasis and flow.

• Starting with sebelum rapat dimulai puts more focus on the timing.
• Starting with materi presentasi itu puts more focus on the material itself.

Indonesian does not mark tense the way English does.

There is no verb ending here that specifically means past. Instead, time is understood from context and words like sebelum.

So the sentence can be interpreted as past in many contexts because:

• sebelum creates a sequence of events
• the context may already be about something that happened

If needed, Indonesian can add time markers such as:

• sudah
• telah
• kemarin
• tadi

For example:

• Materi presentasi itu sudah dicetak sebelum rapat dimulai.

But the original sentence is already complete and natural without them.

Yes, it can, depending on context.

• Materi presentasi itu dicetak sebelum rapat dimulai.
• Materi presentasi dicetak sebelum rapat dimulai.

Both are possible.

The version with itu sounds more definite or specific, as if both speaker and listener know which presentation materials are being talked about.

Without itu, the phrase can sound more general or less explicitly definite.

It can be either, depending on context.

Indonesian nouns usually do not have separate singular and plural forms the way English does. So materi can mean:

• material
• materials

The sentence itself does not force one interpretation. You figure it out from context.

If someone really wants to make plurality clearer, Indonesian may use context, numbers, or other wording, but often it simply leaves it unstated.

Both are possible, but they are not always identical in nuance.

• materi presentasi often refers to the content or presentation materials in a somewhat formal or professional sense
• bahan presentasi can also mean presentation materials, sometimes with a slightly more practical or physical feel, depending on context

In office, academic, or formal settings, materi presentasi is very natural.

So the original sentence sounds normal and appropriate, especially in a professional context.