Sebelum mengirim surat, saya menempelkan label alamat di amplop cokelat.

Sebelum means before.

In this sentence, Sebelum mengirim surat means Before sending the letter or Before I sent the letter.

It introduces an earlier action:

• first: sticking the address label on the envelope
• later: sending the letter

So sebelum sets up the time relationship between the two actions.

The base word is kirim = send.

With the prefix meN-, it becomes mengirim, which is the normal active verb form meaning to send.

So:

• kirim = the root / dictionary-style base
• mengirim = to send / sending in an active clause

In Indonesian, roots often need prefixes in full sentences, especially in formal or neutral standard Indonesian.

Both are possible.

Indonesian often omits the subject in a time clause when it is clearly the same as the subject of the main clause.

So:

• Sebelum mengirim surat, saya menempelkan label alamat...
• Sebelum saya mengirim surat, saya menempelkan label alamat...

Both mean basically the same thing.

The version without the second saya sounds natural and efficient because the subject is already understood to be I.

This is a very common question.

The root is tempel, related to sticking/attaching.

• menempel often means to stick or to be attached / to stick to
• menempelkan means to stick/attach something onto something

In this sentence, the speaker is attaching an object:

• object: label alamat
• place/surface: di amplop cokelat

So menempelkan is the better choice because it clearly means to affix something.

Compare:

• Label itu menempel di amplop. = The label is stuck on the envelope.
• Saya menempelkan label itu di amplop. = I stuck the label on the envelope.

In many cases, -kan helps make the verb mean do something to/for/onto something.

Here, tempel becomes menempelkan, which gives the sense of causing something to be attached.

So:

• menempel = stick / be stuck
• menempelkan = attach something, stick something onto something

A useful way to think about it here is:

• menempelkan label = attach a label

Yes. It is natural and understandable.

• label = label
• alamat = address

So label alamat means address label.

This is a noun + noun combination, which is very common in Indonesian. The second noun often functions like a classifier or descriptor.

Other examples:

• buku pelajaran = textbook / lesson book
• kartu nama = business card / name card

So label alamat is simply an address label.

Because di is a general location preposition, and the best English translation depends on context.

In this sentence:

• di amplop cokelat literally means something like at/on the brown envelope
• in natural English, with label, we say on the envelope

So di does not always equal just one English preposition. It can correspond to:

• in
• on
• at

depending on the situation.

Here, since a label is attached to a surface, on is the natural translation.

Yes, amplop cokelat means brown envelope.

In Indonesian, adjectives usually come after the noun:

• amplop cokelat = brown envelope
• rumah besar = big house
• buku baru = new book

So the word order is different from English:

• English: adjective + noun
• Indonesian: noun + adjective

The standard spelling is cokelat.

You may also see coklat in casual writing or everyday use, but cokelat is the form generally preferred in standard Indonesian.

So in careful writing:

• amplop cokelat is the best choice

Usually, surat means a letter or a written document.

In this sentence, because it also mentions an envelope and an address label, surat clearly means a physical letter being mailed.

But in other contexts, surat can also mean official documents, for example:

• surat izin = permit letter / permission document
• surat kabar = newspaper

So the exact meaning depends on context.

The comma separates the introductory time clause from the main clause.

Structure:

• Sebelum mengirim surat, = introductory clause
• saya menempelkan label alamat di amplop cokelat. = main clause

This is similar to English:

• Before sending the letter, I attached the address label to the brown envelope.

In Indonesian, the comma is commonly used when a clause like this comes first.

In this sentence, the saya in the main clause is normally kept:

• Sebelum mengirim surat, saya menempelkan...

Indonesian often allows subject omission in context, especially in conversation, but in a complete written sentence, keeping saya is the clearest and most standard choice.

So while spoken Indonesian may sometimes drop it, learners should usually include saya here.

The sentence has two parts:

1. Sebelum mengirim surat
   = Before sending the letter

2. saya menempelkan label alamat di amplop cokelat
   = I attached the address label to/on the brown envelope

The main clause follows a very common Indonesian order:

• saya = subject
• menempelkan = verb
• label alamat = object
• di amplop cokelat = location/place

So the pattern is roughly:

• Subject + Verb + Object + Location

Yes. Indonesian often allows small variations.

For example:

• Sebelum mengirim surat, saya menempelkan label alamat pada amplop cokelat.
• Sebelum saya mengirim surat, saya menempelkan label alamat di amplop cokelat.

A useful note:

• di amplop cokelat is natural
• pada amplop cokelat can sound a bit more formal in some contexts

Both are understandable. The original sentence is natural and correct.