Petugas menempelkan label alamat di amplop sebelum surat dikirim.

Petugas is a general word for a person carrying out a duty or job. In this sentence, it most naturally means something like the staff member, the clerk, or the postal worker, depending on context.

It does not always mean a police-style officer. It is broader and often refers to someone on duty in an official or practical role.

Because menempelkan usually means to attach/stick something onto something else, with a clear object.

• menempel can mean to stick or to be attached
• menempelkan is more clearly to stick/attach something

So in this sentence, the person is actively attaching the address label to the envelope, and menempelkan fits that transitive meaning well.

The suffix -kan often helps make a verb more clearly transitive, meaning it acts on an object.

Here:

• base idea: tempel = stick, attach
• menempelkan label = attach a label

So -kan helps express causing something to be attached or putting something onto something else.

For a learner, the easiest way to understand it here is:

• menempelkan label di amplop = to stick the label onto the envelope

Label alamat means address label.

Indonesian often puts two nouns together, where the second noun describes the first:

• label = label
• alamat = address
• label alamat = address label

This is similar to English noun-noun combinations like address label, school bus, or coffee cup.

So alamat is not acting like an adjective in form; it is still a noun, but it modifies label.

This is a very common Indonesian learner question.

They are two different di forms:

• di
  • noun = a preposition meaning in/on/at
    
    • di amplop = on the envelope or on/in the envelope, depending on context
• di-
  • verb = a passive prefix
    
    • dikirim = is sent / sent

So:

• di amplop → separate, because di is a preposition
• dikirim → attached, because di- is a verb prefix

This spelling difference is very important in Indonesian.

The preposition di is a general location marker and can cover meanings like in, on, or at, depending on context.

Here, since an address label is attached to the outside surface of an envelope, English would normally say on the envelope. Indonesian still uses di amplop.

So Indonesian is less strict than English about choosing between in and on in some cases. Context tells you the natural English translation.

Indonesian often uses the passive when the action matters more than the doer, or when the doer is obvious or unimportant.

• surat dikirim = the letter is sent / the letter gets sent

In this sentence, the focus is on the sequence of events:

1. the staff member attaches the address label
2. the letter is sent

Who sends the letter is not the main point, so passive sounds natural.

An active version is possible, for example:

• sebelum petugas mengirim surat

But that shifts the focus slightly toward the person doing the sending.

Sebelum means before.

It introduces the later event that has not happened yet at the time of the first action:

• Petugas menempelkan label alamat di amplop sebelum surat dikirim.
• The staff member attaches the address label to the envelope before the letter is sent.

So sebelum connects two actions and shows their order in time.

Indonesian does not normally use articles like English a, an, and the.

So words like:

• petugas
• label alamat
• amplop
• surat

can mean a, the, or sometimes a general idea, depending on context.

For example:

• petugas could mean a staff member or the staff member
• surat could mean a letter or the letter

The surrounding context tells you which is most natural in English.

In this sentence, surat most likely means letter.

That is because it is being put in or on an amplop and given an address label, which strongly suggests a physical letter.

In other contexts, surat can also mean a document or written correspondence more generally, but letter is the best fit here.

Yes, fairly similar.

The structure is roughly:

• Petugas = subject
• menempelkan = verb
• label alamat = object
• di amplop = location
• sebelum surat dikirim = time clause

So it follows a pattern like:

Subject + Verb + Object + Place + Time clause

That is one reason this sentence feels relatively straightforward for English speakers, even though the Indonesian grammar details are different.

In everyday speech, some speakers may say menempel label, and people would probably understand it. However, menempelkan label is more standard and clearer for the meaning to attach the label.

So for learners, menempelkan is the safer and more natural choice in a sentence like this, where someone is deliberately sticking one thing onto another.

Because the second clause is passive:

• sebelum surat dikirim = before the letter is sent

In passive form, Indonesian does not need to mention the doer if it is not important.

If you wanted to mention the doer, you could say something like:

• sebelum surat dikirim oleh petugas

But that sounds more explicit and often less natural unless you specifically want to highlight that the staff member is the sender.