Saya simpan kotak telefon di dalam almari supaya tidak hilang.

A word-by-word breakdown is:

• Saya = I
• simpan = keep / store / put away
• kotak telefon = phone box / box for a phone
• di dalam = in / inside
• almari = cupboard / cabinet / wardrobe
• supaya = so that / in order that
• tidak = not
• hilang = lost / disappear / go missing

So the sentence structure is roughly:

I store the phone box in the cupboard so that it does not get lost.

Malay normally does not use articles like a, an, or the.

So:

• kotak telefon can mean a phone box, the phone box, or just phone box
• almari can mean a cupboard, the cupboard, or simply cupboard

The exact meaning depends on context.

That is very normal in Malay. If needed, Malay can add extra words to make things more specific, but very often it just leaves them out.

Simpan often means:

• to keep
• to store
• to put away
• sometimes to save

In this sentence, simpan means something like put away for safekeeping or store.

So Saya simpan kotak telefon... means:

• I keep the phone box...
• I store the phone box...
• I put the phone box away...

All of these are reasonable translations depending on context.

Literally, kotak telefon is:

• kotak = box
• telefon = telephone / phone

Malay noun combinations like this often work like box phone in structure, but in natural English we reverse it as phone box or box for a phone.

In this sentence, because it is being kept in a cupboard, it most likely means a box for a phone, such as the packaging the phone came in.

A learner should know that Malay noun-noun combinations can sometimes be a bit broad in meaning, and context tells you which meaning is intended.

di dalam almari means inside the cupboard.

Here is the difference:

• di = a preposition meaning at / in / on
• dalam = inside / interior
• di dalam = inside / in the inside of

So:

• di almari = at/in the cupboard
• di dalam almari = inside the cupboard

di dalam is a bit more explicit. It emphasizes that the object is inside, not just associated with the cupboard.

In everyday Malay, both dalam almari and di dalam almari can occur, but di dalam almari is very clear and natural.

Because di here is a preposition, and Malay writes prepositions separately.

So:

• di dalam almari = correct

But Malay also has di- as a prefix for passive verbs, and that one is attached to the verb.

For example:

• disimpan = is kept / is stored

So the learner should remember:

• di as a location word = separate
• di- as a verb prefix = attached

Supaya means so that or in order that. It introduces a purpose.

So:

• Saya simpan kotak telefon di dalam almari supaya tidak hilang = I keep the phone box in the cupboard so that it does not get lost

The idea is:

action + purpose

• Saya simpan... = the action
• supaya tidak hilang = the purpose

A close synonym is agar, which is also common.

It is understood from context that the phone box is the thing that should not get lost.

Malay often leaves out subjects when they are obvious.

So supaya tidak hilang literally looks like:

• so that not lost

But naturally it means:

• so that it does not get lost
• where it refers to kotak telefon

This kind of omission is very common in Malay.

Use tidak to negate verbs and adjectives.

Use bukan mainly to negate nouns or noun phrases.

Here, hilang functions like a verb/adjective meaning:

• be lost
• go missing
• disappear

So:

• tidak hilang = not lost / not go missing → correct
• bukan hilang → not natural here

A simple rule is:

• tidak for actions, states, and qualities
• bukan for identity/classification

Hilang usually means:

• to be lost
• to go missing
• to disappear

It does not usually mean to lose something in the active English sense.

Compare:

• Kotak itu hilang = The box is lost / The box went missing
• Saya kehilangan kotak itu = I lost that box

So in your sentence, tidak hilang means:

• does not get lost
• does not go missing

Malay verbs do not change form for tense the way English verbs do.

So simpan itself does not tell you whether the action is present, past, or future. The time is usually understood from context or shown with time words.

Because of that, Saya simpan kotak telefon di dalam almari... could mean different things depending on context, such as:

• I keep the phone box in the cupboard...
• I stored the phone box in the cupboard...
• I will keep the phone box in the cupboard...

In isolation, learners often interpret it as a present or habitual statement, but context decides.

The basic order here is:

• Saya = subject
• simpan = verb
• kotak telefon = object
• di dalam almari = location

So it follows a very common Malay pattern:

Subject + Verb + Object + Place

That is why the sentence feels fairly straightforward to an English speaker.

Yes. A few natural alternatives are:

• Saya simpan kotak telefon dalam almari supaya tidak hilang.
• Saya letak kotak telefon dalam almari supaya tidak hilang.
• Kotak telefon itu saya simpan dalam almari supaya tidak hilang.

The differences are small:

• simpan emphasizes keeping/storing
• letak emphasizes putting/placing
• kotak telefon itu saya simpan... gives more emphasis to the phone box

Your original sentence is fully natural.

Not always exactly. Almari can refer to several kinds of storage furniture, depending on context:

• cupboard
• cabinet
• wardrobe

So in English, the best translation depends on what kind of almari is meant.

In this sentence, cupboard or cabinet is probably the most natural choice.