Tukang bangunan mengebor kusen.

Tukang bangunan means construction worker, builder, or workman depending on context.

• tukang = a worker, craftsperson, repair person, or someone who does a certain job
• bangunan = building, construction

Together, tukang bangunan refers to someone who does building work. It is a common everyday expression, not a highly formal job title.

Yes. In Indonesian, noun phrases often work like this:

• main noun first
• describing noun second

So tukang bangunan literally works like worker of buildings / building worker.

This is different from English, where we usually put the describing word first: construction worker.

Mengebor comes from the base word bor, meaning drill.

The verb is formed with the prefix meng-, so:

• bor = drill
• mengebor = to drill

This prefix is very common in Indonesian for making active verbs.

Because when meng- is added to a one-syllable base word like bor, Indonesian often uses the form menge-.

So:

• bor → mengebor
• cat → mengecat
• las → mengelas

This is a normal spelling and pronunciation pattern.

It can mean any of those, depending on context.

Indonesian verbs do not change form for:

• tense
• person
• number

So mengebor by itself could be understood as:

• drills
• is drilling
• was drilling
• will drill

The time is usually understood from context or from time words such as:

• sedang = currently
• tadi = earlier
• besok = tomorrow
• sudah = already
• akan = will

Kusen means a frame, especially a door frame or window frame in building contexts.

So in this sentence, it most likely refers to a structural frame made of wood, metal, or another building material.

Indonesian usually does not use articles like the, a, or an.

So:

• tukang bangunan can mean a construction worker or the construction worker
• kusen can mean a frame or the frame

You figure out the exact meaning from context.

Mostly yes. The basic order is:

• Subject + Verb + Object

So:

• Tukang bangunan = subject
• mengebor = verb
• kusen = object

That is very similar to English: The construction worker drills the frame.

Because kusen is the direct object of the verb mengebor.

The worker is drilling the frame itself, so no preposition is needed.

Compare:

• Tukang bangunan mengebor kusen. = The construction worker drills the frame.
• Tukang bangunan mengebor pada kusen. = The construction worker drills into/on the frame.

The version without a preposition is the simpler and more natural direct-object structure.

Yes. Tukang is a very flexible word. It often means someone whose job involves a particular skill, service, or trade.

For example:

• tukang kayu = carpenter
• tukang cukur = barber
• tukang las = welder
• tukang listrik = electrician

In informal speech, tukang can sometimes also describe someone who habitually does something, depending on context.

It is generally neutral everyday Indonesian.

The words are normal and natural, especially in practical or work-related contexts. It is not slang, and it is not especially formal either.

You can add sedang before the verb:

• Tukang bangunan sedang mengebor kusen.

This makes the ongoing action clearer: The construction worker is drilling the frame.

You would usually use the passive prefix di-:

• Kusen dibor tukang bangunan.

Or, if you want a more complete style:

• Kusen sedang dibor oleh tukang bangunan.

Breakdown:

• dibor = is drilled / is being drilled
• oleh = by

In everyday Indonesian, oleh is sometimes omitted if the meaning is already clear.

No. Indonesian nouns usually do not have different singular and plural forms.

So:

• tukang bangunan could mean one worker or workers, depending on context
• kusen could mean one frame or multiple frames, depending on context

If you want to make plurality clear, you can use context, numbers, or reduplication in some cases. But here, no marking is required.