Kami bersulang di pesta.

In Indonesian, both kami and kita can mean we, but they are not interchangeable.

• kami = we, not including the person being spoken to
• kita = we, including the person being spoken to

So Kami bersulang di pesta means the speaker and some other people made a toast, but the listener was not part of that group.

If the listener was also at the party and included in we, you would say:

• Kita bersulang di pesta.

Bersulang means to make a toast or to toast, usually by raising glasses in a celebration.

It often implies something like:

• raising drinks
• saying a toast
• clinking glasses

The root is related to sulang, and the prefix ber- often forms an intransitive verb, meaning the action is done without a direct object.

So:

• Kami bersulang = We made a toast / We toasted

You do not need a direct object after bersulang in this sentence.

Indonesian does not have articles like a, an, or the in the same way English does.

So:

• pesta can mean a party, the party, or just party, depending on context.

In this sentence:

• di pesta naturally means at the party or at a party

The exact interpretation depends on the situation, not on a special article word.

Di pesta means at the party or in the party setting.

Here, di is a preposition meaning in, at, or on, so it is written separately from the following word:

• di pesta = at the party
• di rumah = at home
• di kantor = at the office

This is different from the prefix di-, which is attached to a verb in passive forms:

• ditulis = written
• dibuka = opened

So remember:

• di
  • place = written separately
• di-
  • verb = written together

Not specifically. Indonesian verbs do not usually change form for tense the way English verbs do.

So Kami bersulang di pesta could mean:

• We toasted at the party
• We are toasting at the party
• We toast at the party

In real usage, context usually makes the time clear. If needed, Indonesian can add time words such as:

• tadi = earlier / a little while ago
• kemarin = yesterday
• sedang = currently / in the middle of
• akan = will

For example:

• Kami tadi bersulang di pesta. = We toasted at the party earlier.
• Kami sedang bersulang di pesta. = We are making a toast at the party.

The sentence follows a very common Indonesian word order:

• Kami = subject
• bersulang = verb
• di pesta = place phrase

So the pattern is:

Subject + Verb + Location

That is very natural in Indonesian.

You could think of it like:

• Kami — who?
• bersulang — did what?
• di pesta — where?

Usually, bersulang is used without a direct object. It describes the act of toasting itself.

So this is natural:

• Kami bersulang di pesta.

If you want to add more detail, you would usually add a phrase, not a direct object, for example:

• Kami bersulang untuk pengantin. = We made a toast for the bride and groom.
• Kami bersulang atas keberhasilan mereka. = We toasted their success.

So bersulang is generally treated as an intransitive verb.

Yes, it is natural and grammatical.

Kami bersulang di pesta is a normal way to say that we made a toast at a party.

Depending on context, native speakers might also say something slightly different, such as:

• Kami mengangkat gelas di pesta. = We raised our glasses at the party.
• Kami bersulang untuk merayakannya. = We made a toast to celebrate it.

But your original sentence is perfectly fine.

A simple approximate pronunciation is:

• Kami → KAH-mee
• bersulang → ber-soo-LAHNG
• di → dee
• pesta → PES-tah

A few helpful notes:

• r in Indonesian is usually a tapped or rolled r
• e in ber- is often a soft schwa sound, like the a in about
• stress in Indonesian is usually not as strong or dramatic as in English, even if learners mark it for practice

Yes, Indonesian often omits the subject if it is already clear from context.

So in conversation, someone might simply say:

• Bersulang di pesta.

However, on its own, that sounds less complete and depends heavily on context. If you are learning or writing a full sentence, keeping kami is best:

• Kami bersulang di pesta.

That makes the subject clear and unambiguous.