Otobüs sekizinci durakta durdu.

Here is the breakdown:

• otobüs = bus
• sekizinci = eighth
• durak-ta = at the stop
  
  • durak = stop
  • -ta = locative suffix, meaning in / at / on
• dur-du = stopped
  • dur- = verb stem stop
  • -du = past tense suffix

So the structure is basically:

bus + eighth + at-the-stop + stopped

Turkish usually puts the main verb at the end.

Because sekiz means eight, but sekizinci means eighth.

Turkish makes ordinal numbers with a suffix like:

• bir → birinci = first
• iki → ikinci = second
• üç → üçüncü = third
• sekiz → sekizinci = eighth

So in this sentence, you need the ordinal form because English also uses eighth stop, not eight stop.

Because the sentence means at the stop, not just stop.

The suffix -da / -de / -ta / -te is the locative case, used for meanings like:

• in
• at
• on

So:

• durak = stop
• durakta = at the stop

In this sentence, sekizinci durakta means at the eighth stop.

This is because of Turkish sound harmony and consonant harmony.

The locative suffix has four common forms:

• -da
• -de
• -ta
• -te

In durak, the last consonant is k, which is voiceless, so the suffix uses t rather than d.

Also, the last vowel in durak is a, which is a back vowel, so the vowel in the suffix is a, not e.

So:

• durak
  • -da type suffix → durakta

Because sekizinci is an adjective modifying durak.

In Turkish, when an adjective describes a noun, the case ending goes on the noun, not on the adjective.

So:

• sekizinci durak = eighth stop
• sekizinci durakta = at the eighth stop

This is similar to how you would not say something like at the eighth-at stop in English. The location marking belongs to stop, because that is the main noun.

Durdu is the past tense of durmak, which means to stop, to stand, or to stay still, depending on context.

Here:

• dur- = verb stem
• -du = past tense

So durdu means stopped.

The past tense suffix in Turkish changes form depending on vowel harmony and consonant harmony:

• -dı
• -di
• -du
• -dü
• and after voiceless sounds: -tı, -ti, -tu, -tü

Since the verb stem is dur-, the correct form here is durdu.

Because they are related to the same basic root: dur-.

• durmak = to stop / stand
• durak = stop as a noun, literally a place where vehicles stop
• durdu = stopped

So yes, the repetition is real and natural in Turkish:

• durak is the place
• durdu is the action

That is why the sentence can feel a bit like The bus stopped at the stop structurally, though the full meaning is The bus stopped at the eighth stop.

The word order is natural, but Turkish is more flexible than English.

The neutral order here is:

• Otobüs = subject
• sekizinci durakta = place/location phrase
• durdu = verb

So:

Otobüs sekizinci durakta durdu.

This is a very normal Turkish pattern because Turkish usually places the finite verb at the end.

You can sometimes change the order for emphasis, for example:

• Sekizinci durakta otobüs durdu.

This puts more focus on at the eighth stop.

But the verb usually still stays near the end in standard Turkish.

Because Turkish does not use articles like English the and a/an in the same way.

So Turkish often leaves definiteness to context.

• otobüs can mean the bus or a bus, depending on context
• durakta can mean at the stop or at a stop, depending on context

In this sentence, the intended meaning is understood from context as the bus and the eighth stop.

Turkish can use bir for a / one in some situations, but it is not needed here.

Yes. The verb durmak has a wider range than English stop.

Depending on context, it can mean:

• stop
• stand
• stay still
• remain

But with otobüs and durak, the natural meaning is clearly stopped.

So in this sentence, durdu is best understood as stopped.

A simple pronunciation guide is:

• Otobüs → o-to-BÜS
• sekizinci → se-ki-ZIN-ji
• durakta → du-RAK-ta
• durdu → DUR-du

A few useful pronunciation notes:

• ö and ü are front rounded vowels; English does not have exact matches
• c in Turkish is pronounced like English j
• Turkish spelling is quite regular, so words are usually pronounced close to how they are written

So sekizinci ends with a j sound, not a hard k or s sound.