Begitu kelas selesai, saya langsung mengirim foto stempel itu ke pembimbing supaya proposal cepat dibaca.

In this sentence, begitu means as soon as or once.

So Begitu kelas selesai means As soon as class ended / once class was over.

A useful pattern is:

• Begitu + clause, ... = As soon as ...

For example:

• Begitu saya sampai, saya menelepon dia.
  As soon as I arrived, I called him.

Here, begitu is not the like that / such meaning you may have seen in other contexts.

Both are possible, but kelas selesai is a very natural, compact way to say the class finished / class was over.

In Indonesian, selesai can function like finished / completed / over. So:

• kelas selesai = class is finished / class ended
• kelas sudah selesai = class has already finished

Adding sudah would emphasize completion a bit more, but it is not necessary here because the context already makes the sequence clear.

Both can work, but they are slightly different in feel.

• Begitu kelas selesai = as soon as class ended
• Setelah kelas selesai = after class ended

Begitu gives a stronger sense of immediacy. It suggests the speaker did the next action right away. That fits well with langsung later in the sentence.

So this sentence strongly conveys:

• class ended
• immediately after that, I sent the photo

Langsung means immediately, right away, or straightaway.

So:

• saya langsung mengirim = I immediately sent

It emphasizes that the speaker did not wait.

Notice how begitu and langsung work together:

• Begitu kelas selesai = as soon as class ended
• langsung = immediately

Together they make the timing very clear and natural.

Mengirim is the meN- form of kirim and is the normal active verb form in standard Indonesian when there is a direct object.

Here the object is:

• foto stempel itu

So:

• saya mengirim foto ... = I sent the photo ...

Using just kirim is possible in casual speech, especially in texting or informal conversation, but mengirim is the more complete and standard form.

Compare:

• Saya mengirim dokumennya. = standard
• Saya kirim dokumennya. = informal but common

It means the photo of that stamp or the photo of the stamp.

Word order in Indonesian often places the head noun first, then the modifier:

• foto = photo
• stempel = stamp
• foto stempel = photo of a stamp / stamp photo

Then itu makes it definite:

• foto stempel itu = that stamp photo / the photo of that stamp

In natural English, you would probably say:

• the photo of the stamp
• the photo of that stamp

depending on the context.

Stempel usually refers to a stamp, especially an official stamp or seal impression used on documents.

It is related in meaning to cap, and in many contexts they overlap. However:

• stempel often sounds like the physical stamp or the stamped mark, often in office/document contexts
• cap can also mean a stamp or seal and is very common in formal/official contexts too

In real usage, both may appear depending on region, habit, and context. In a sentence about sending proof to a supervisor, stempel strongly suggests an official document stamp.

In Indonesian, demonstratives like ini and itu usually come after the noun phrase they modify.

So:

• stempel itu = that stamp
• foto stempel itu = that stamp photo / the photo of that stamp

This is normal Indonesian word order.

Compare:

• buku itu = that book
• rumah ini = this house

Both are possible, but they are not exactly the same.

• ke pembimbing literally means to the supervisor/advisor
• kepada pembimbing also means to the supervisor/advisor, but it sounds a bit more formal and is especially common when the recipient is a person

In everyday Indonesian, ke is often used very naturally with verbs like kirim:

• mengirim sesuatu ke seseorang

Even though ke is often taught first as a location/direction preposition, in real usage it can also mark the destination of something being sent.

So this sentence sounds natural and conversational.

Pembimbing means supervisor, advisor, or mentor, depending on context.

It comes from the root bimbing = to guide.

So:

• pembimbing = the person who guides

In an academic context, it often means:

• thesis advisor
• academic supervisor
• research supervisor

Here, since proposal is mentioned, pembimbing probably means an academic supervisor or advisor.

Supaya means so that or in order that.

So:

• supaya proposal cepat dibaca = so that the proposal would be read quickly

Supaya and agar are very close in meaning. In many cases, they are interchangeable.

Roughly:

• supaya = common and natural in everyday speech
• agar = sometimes feels a bit more formal or written

Examples:

• Saya belajar supaya lulus. = I study so that I pass.
• Saya belajar agar lulus. = same meaning

Both are correct here.

This is because the sentence uses the passive voice:

• dibaca = be read

So:

• proposal cepat dibaca = the proposal is read quickly / gets read quickly

Why use passive here?

Because the focus is on the proposal, not on the person reading it. The speaker’s goal is that the proposal gets attention quickly. The reader is understood from context to be the pembimbing.

Compare:

• supaya pembimbing cepat membaca proposal = so that the supervisor quickly reads the proposal
• supaya proposal cepat dibaca = so that the proposal gets read quickly

The second version is often more natural when the result matters more than the actor.

Dibaca is the passive form of membaca.

• membaca = to read
• dibaca = to be read

Pattern:

• meN- form = active
• di- form = passive

Examples:

• Dia membaca buku itu. = He/She reads that book.
• Buku itu dibaca dia. = That book is read by him/her.

In your sentence:

• proposal cepat dibaca = the proposal gets read quickly

The agent is not stated, because it is obvious enough from context.

Most likely the supervisor/advisor mentioned earlier: pembimbing.

Indonesian often leaves the agent unstated in passive constructions when it is already clear from context.

So even though the sentence does not explicitly say:

• oleh pembimbing = by the supervisor

that is the most natural interpretation.

If you wanted to make it explicit, you could say:

• supaya proposal cepat dibaca pembimbing
• or more formally, supaya proposal cepat dibaca oleh pembimbing

But leaving it unstated is very normal.

It can suggest either, depending on context, but here it most naturally means read promptly / read sooner / get read without delay.

That is because the whole sentence is about sending the stamp photo immediately after class. The point is probably to speed up the administrative process so the proposal will be attended to quickly.

So in natural English, this part is probably closer to:

• so that the proposal would be read sooner
• so that the proposal could be reviewed quickly

rather than literally read at high speed.

Because Indonesian often expresses the intended result directly, without needing a modal like can or be able to.

So:

• supaya proposal cepat dibaca literally = so that the proposal is quickly read
• natural English = so that the proposal can be read quickly / gets read quickly / is reviewed quickly

Indonesian frequently leaves this kind of nuance to context.

In writing, the comma is appropriate and helpful because the sentence begins with a time clause.

So this is good style:

• Begitu kelas selesai, saya langsung mengirim ...

It separates the introductory clause from the main clause, just like in English:

• As soon as class ended, I immediately sent ...

In very informal writing, people may omit it, but the comma is standard and clearer.

It breaks down like this:

• Begitu kelas selesai,
  time clause: As soon as class ended,
• saya langsung mengirim foto stempel itu ke pembimbing
  main clause: I immediately sent the photo of the stamp to my supervisor
• supaya proposal cepat dibaca.
  purpose clause: so that the proposal would be read quickly

So the sentence structure is basically:

• time + main action + purpose

This is a very common and useful Indonesian pattern.

Yes.

A slightly more formal version might be:

• Begitu kelas selesai, saya langsung mengirimkan foto stempel tersebut kepada pembimbing agar proposal segera dibaca.

Changes:

• mengirimkan sounds a bit fuller/more formal
• tersebut is more formal than itu
• kepada is more formal for a person-recipient
• agar is slightly more formal than supaya
• segera is a more formal-sounding soon/immediately

A more casual version might be:

• Begitu kelas selesai, saya langsung kirim foto stempel itu ke pembimbing biar proposal cepat dibaca.

Changes:

• kirim instead of mengirim
• biar instead of supaya

All are understandable; the original sentence is already very natural.