Jika hujan belum reda dan bus terakhir sudah lewat, saya mau tidak mau naik taksi ke stasiun supaya tidak ketinggalan kereta.

Jika means if.

In this sentence, jika introduces the condition:

Jika hujan belum reda dan bus terakhir sudah lewat ...
= If the rain hasn’t stopped and the last bus has already passed/gone ...

Difference from kalau:

• jika is a bit more formal or written
• kalau is more common in everyday speech

In most situations, they can both mean if:

• Jika hujan turun, saya tinggal di rumah.
• Kalau hujan turun, saya tinggal di rumah.

Both are natural, but jika sounds slightly more formal here.

Belum means not yet, and reda means to subside, to ease off, or to stop in the context of rain, wind, noise, emotion, and similar things.

So:

• hujan belum reda = the rain hasn’t let up yet
• more literally: the rain is not yet subsided

This is more natural in Indonesian than something like directly translating stop raining word-for-word.

Examples:

• Hujannya belum reda. = The rain hasn’t stopped yet.
• Anginnya sudah reda. = The wind has eased off.

Belum and tidak are different.

• tidak reda = does not subside / does not stop
• belum reda = has not subsided yet

In this sentence, belum is used because the idea is up to now, the rain still hasn’t stopped. That matches the English meaning much better.

Compare:

• Hujan tidak reda. = The rain does not stop / isn’t stopping
  This can sound more absolute or descriptive.
• Hujan belum reda. = The rain hasn’t stopped yet
  This focuses on the situation at the current moment.

Yes, literally lewat means pass by, go past, or be past.

So bus terakhir sudah lewat literally means:

• the last bus has already passed

In natural English, depending on context, this often means:

• the last bus has already gone
• the last bus has already passed by
• the last bus is no longer available

Here, it means the person can no longer catch that bus.

Also note:

• sudah = already
• lewat = pass / gone past

Because they describe two different time-related states:

• belum reda = has not stopped yet
• sudah lewat = has already gone past

This creates a very natural contrast:

• one problem is still not resolved (the rain hasn’t let up yet)
• the other event has already happened (the last bus has gone)

Indonesian often uses belum and sudah very clearly to mark this kind of timing.

Yes, literally it is something like want or not want, but as an expression it means:

• whether I want to or not
• I have no choice
• necessarily / inevitably

So:

saya mau tidak mau naik taksi
= whether I want to or not, I have to take a taxi
= I have no choice but to take a taxi

This is a fixed expression and very common in Indonesian.

Examples:

• Mau tidak mau, kita harus pergi sekarang.
  = Whether we like it or not, we have to go now.
• Dia mau tidak mau menerima keputusan itu.
  = He had no choice but to accept that decision.

Because mau tidak mau already carries the idea of necessity or lack of choice.

So:

• saya mau tidak mau naik taksi already means I have no choice but to take a taxi

You could also say:

• saya mau tidak mau harus naik taksi

But that can sound more emphatic, since both mau tidak mau and harus express compulsion. The original sentence is perfectly natural without harus.

In Indonesian, naik is commonly used for using transportation, especially when getting on or taking a vehicle.

So:

• naik bus = take the bus
• naik kereta = take the train
• naik taksi = take a taxi
• naik pesawat = take a plane

Even though naik literally often means go up or get on, in transport contexts it is the normal verb.

For a taxi, English uses take a taxi, but Indonesian naturally says naik taksi.

Ke means to and shows movement toward a destination.

So:

• naik taksi ke stasiun = take a taxi to the station

Use ke when there is movement:

• Saya pergi ke kantor. = I’m going to the office.
• Dia lari ke rumah. = He ran to the house.

Pada is not used for this kind of destination. It has other functions, such as:

• time expressions
• formal prepositional uses
• less direct location-related uses in certain contexts

For ordinary movement toward a place, ke is the normal choice.

Supaya means so that or in order that.

In this sentence:

• supaya tidak ketinggalan kereta = so that I don’t miss the train

Similar words:

• agar = also so that, often slightly more formal
• biar = can also mean so that, but is more informal and has other uses too

Examples:

• Saya berangkat pagi supaya tidak terlambat.
• Saya berangkat pagi agar tidak terlambat.

Both mean:

• I leave early so that I’m not late.

So in this sentence, supaya introduces the purpose of taking the taxi.

Ketinggalan is a very common word meaning:

• to be left behind
• to miss
• to fail to catch

In transport contexts:

• ketinggalan kereta
• ketinggalan bus
• ketinggalan pesawat

all commonly mean:

• miss the train/bus/plane

Why not tinggal?

• tinggal usually means live, stay, or remain
• it does not mean miss in this context

Why not tertinggal?

• tertinggal usually means left behind
• for example: Tas saya tertinggal di rumah = My bag was left behind at home

But ketinggalan is the usual word for missing a train or being left behind in a practical sense:

• Saya ketinggalan kereta. = I missed the train.

Because ketinggalan kereta is the idiomatic expression for missing the train.

Indonesian does not usually say:

• tertinggal dari kereta
  for this meaning.

That wording would sound unnatural or would suggest a different physical relationship.

The natural pattern is:

• ketinggalan + vehicle/event/class/etc.

Examples:

• Saya ketinggalan bus. = I missed the bus.
• Dia ketinggalan pesawat. = He missed the plane.
• Anak itu ketinggalan pelajaran. = That child fell behind in lessons.

The sentence can be broken into three main parts:

1. Condition

   • Jika hujan belum reda dan bus terakhir sudah lewat
   • If the rain hasn’t stopped and the last bus has already gone

2. Main result

   • saya mau tidak mau naik taksi ke stasiun
   • I have no choice but to take a taxi to the station

3. Purpose

   • supaya tidak ketinggalan kereta
   • so that I don’t miss the train

So the structure is basically:

Jika ... , saya ... supaya ...
= If ... , I ... so that ...

This kind of clause chaining is very common in Indonesian and usually feels quite straightforward once you identify:

• the condition
• the main action
• the purpose

In modern Indonesian, kereta by itself usually means train, especially in everyday usage in Indonesia.

So:

• stasiun
  • kereta strongly points to train
• stasiun kereta = train station in many contexts

A learner may notice that in some related words or older/historical usage, kereta can refer to other vehicles, but in current standard Indonesian in a sentence like this, it clearly means train.

So:

• ketinggalan kereta = miss the train

Yes, in many contexts Indonesian allows subject omission if it is already clear.

For example, conversationally someone might say:

• Jika hujan belum reda dan bus terakhir sudah lewat, mau tidak mau naik taksi ke stasiun supaya tidak ketinggalan kereta.

This can still be understood as I have no choice but to take a taxi... if the speaker is obvious from context.

However, including saya makes the sentence clearer and more complete, especially for careful speech or writing. In a textbook sentence, keeping saya is very natural.

It is mostly neutral, with a slight lean toward careful or written style because of words like jika.

Why:

• jika sounds a bit more formal than kalau
• supaya is neutral and common
• mau tidak mau is a common idiomatic expression, not especially formal

A more conversational version might be:

• Kalau hujan belum reda dan bus terakhir sudah lewat, saya mau nggak mau naik taksi ke stasiun biar nggak ketinggalan kereta.

Changes:

• jika → kalau
• tidak → nggak
• supaya → biar

But the original sentence is perfectly natural and standard.