Di minimarket dekat kos, adik perempuan saya membeli yogurt dan sereal untuk sarapan besok.

Di is a preposition meaning in, at, or sometimes on, depending on context. Here di minimarket means at the minimarket.

Indonesian often puts place or time information at the beginning of a sentence to set the scene. So starting with Di minimarket dekat kos, ... is very natural.

A more neutral word order would also be possible:

Adik perempuan saya membeli yogurt dan sereal di minimarket dekat kos untuk sarapan besok.

Starting with the location just gives that part a little more focus.

Dekat means near or close to, and kos refers to a boarding house, rented room, or student lodging.

So minimarket dekat kos means the minimarket near the boarding house.

In everyday Indonesian, kos is a very common word, especially among students and young workers. It is short for indekos.

Both can be natural, but they work a little differently in feel.

• minimarket dekat kos = the minimarket near the boarding house
• minimarket di dekat kos = also the minimarket near the boarding house, but slightly more explicit

When dekat kos directly describes minimarket, leaving out di is very common and natural. It functions like a modifier after the noun.

So in this sentence, minimarket dekat kos is a normal compact way to say the minimarket near the boarding house.

Not exactly.

Kos usually means a rented room or simple boarding accommodation, often for students or workers. Depending on context, it can refer to:

• the room itself
• the building
• the place where someone boards/lives temporarily

It is not exactly the same as a house, and not always the same as a dormitory either. Boarding house or rented room is often the closest English idea.

Adik means younger sibling. By itself, it does not tell you whether the sibling is male or female.

So:

• adik saya = my younger sibling
• adik perempuan saya = my younger sister
• adik laki-laki saya = my younger brother

The word perempuan is added to make the gender clear.

In Indonesian, possessors usually come after the noun.

So:

• adik perempuan saya = my younger sister
• rumah saya = my house
• teman saya = my friend

This is the normal Indonesian pattern. English puts my before the noun, but Indonesian usually puts saya after it.

Membeli is the standard active verb form of beli (to buy).

The prefix meN- often appears on verbs in formal or neutral standard Indonesian:

• beli = buy
• membeli = to buy / bought

In careful writing, membeli is the expected form. In casual speech, people often say beli instead:

• Adik saya beli yogurt...

That is very common in conversation, but membeli sounds more standard and complete.

Indonesian does not use articles the way English does.

So a noun like minimarket can mean:

• a minimarket
• the minimarket

The exact meaning depends on context.

In this sentence, minimarket dekat kos is understood from the situation, so English may translate it as the minimarket near the boarding house, but Indonesian does not need a separate word for the.

Indonesian nouns usually do not change form for singular vs. plural.

So yogurt can mean yogurt or yogurts, depending on context. The same goes for sereal.

If Indonesian really wants to emphasize plurality, it can use reduplication:

• buku-buku = books
• anak-anak = children

But in many sentences, plural marking is unnecessary because the meaning is already clear enough from context.

Literally, it means for breakfast tomorrow.

Here:

• untuk = for
• sarapan = breakfast / to have breakfast
• besok = tomorrow

In this sentence, sarapan is understood as the meal, so the phrase means for tomorrow’s breakfast or for breakfast tomorrow.

Because besok is modifying the breakfast time: tomorrow’s breakfast.

So:

• sarapan besok = tomorrow’s breakfast
• untuk sarapan besok = for tomorrow’s breakfast

This word order is natural in Indonesian. Time expressions often come after the noun or action they relate to.

In theory, sarapan can be either a noun (breakfast) or a verb (to have breakfast), but in this sentence the natural reading is the noun meaning:

for tomorrow’s breakfast

That is because the sentence talks about buying food items, so the phrase clearly tells you their purpose.

It is not absolutely required, but it is helpful and natural in writing.

Because the sentence begins with a long location phrase:

Di minimarket dekat kos, ...

the comma separates that opening setting from the main clause. This is similar to English punctuation after an introductory phrase.

Yes. Indonesian allows some flexibility, especially with place and time phrases.

For example, you could also say:

Adik perempuan saya membeli yogurt dan sereal di minimarket dekat kos untuk sarapan besok.

This version is also correct and natural. The original sentence puts the location first for emphasis or scene-setting.

Usually, it is understood from context.

Because the speaker says dekat kos, listeners often assume it means near my boarding house or near the boarding house we both know about.

If the speaker wants to be fully explicit, they can say:

dekat kos saya = near my boarding house

So the shorter form often relies on shared context.