Ağabey, şu köşede hangi dolmuşun durduğunu bir söylesene.

Ağabey literally means older brother, but in everyday Turkish it is also used to address a man in a friendly, respectful, informal way—something like bro, man, or sir depending on context.

At the beginning of the sentence, it works as a form of address:

• Ağabey, ... = Hey brother / Excuse me, man / Sir, ...

In speech, many people say abi instead of ağabey. That is the very common colloquial form.

Şu is a demonstrative, like this / that in English, but its exact feel depends on context.

Turkish has a three-way distinction:

• bu = this, near me
• şu = that / this there, often something visible or being pointed out
• o = that, farther away or already known

So şu köşede means something like:

• at that corner
• at this corner over there
• at that corner you see

It often suggests the speaker is indicating a specific corner.

Köşe means corner.
The ending -de / -da is the locative case, meaning in / at / on.

So:

• köşe = corner
• köşede = at the corner / on the corner

Because of vowel harmony, it becomes -de here:

• şu köşede = at that corner

Dolmuş is a very common Turkish word for a type of shared minibus or shared taxi that follows a route. It is a cultural vocabulary item, so English often does not have one perfect single-word equivalent.

Depending on context, it can be translated as:

• shared minibus
• minibus
• shared taxi

In this sentence, it refers to the route-vehicles that stop at that corner.

This is because the sentence contains a subordinate clause built with the -DIK participle/nominalization pattern.

The core idea is:

• hangi dolmuş duruyor? = Which dolmuş is stopping / waiting there?

But after verbs like bilmek or söylemek, Turkish often turns a whole clause into a noun-like object:

• hangi dolmuşun durduğunu = which dolmuş stops / is stopping / waits there

In this structure, the subject of the embedded clause often takes the genitive:

• dolmuş → dolmuşun

So:

• hangi dolmuşun durduğunu literally looks like the fact of which dolmuş is stopping

This is a very common and important Turkish pattern.

Durduğunu can be broken down like this:

• dur- = verb stem, stop / stand / wait
• -duk / -dık / -dik / -duk type form = participle/nominalizer
• -u = 3rd person possessive agreement
• -nu / -nı / -ni / -nü = accusative case

Here the form is:

• durduğunu

This whole form means something like:

• that it stops
• that it is stopping
• which one stops
• the fact that it stops

In more natural English for this sentence:

• which dolmuş stops there
• which dolmuş is the one that stops there

This structure is difficult at first because English does not build subordinate clauses this way.

Yes—durmak can mean:

• to stop
• to stand
• to remain
• to wait
• to be stationed

In transport contexts, durmak commonly means to stop at a place:

• Otobüs burada durur. = The bus stops here.

So in this sentence:

• hangi dolmuşun durduğunu means which dolmuş stops at that corner

Depending on the exact situation, it may also carry the sense of waits there / stands there.

Great question. Here bir does not literally mean one.

In colloquial Turkish, bir is often used before a verb to soften the request or make it sound more casual/natural. It can feel a bit like:

• just
• quickly
• for a second

So:

• bir söylesene = just tell me / do tell me

It makes the request sound more conversational and less blunt.

You will see this in many expressions:

• Bir bakar mısın? = Could you take a look?
• Bir gelsene. = Come here a sec.

Söylesene comes from:

• söyle = tell / say (imperative)
• -sene = a colloquial particle added to soften, urge, or make the request more expressive

So söylesene can mean:

• come on, tell me
• just tell me
• tell me, will you
• please tell me

Its tone depends on context and intonation. It is usually:

• informal
• friendly
• slightly insistent

It is not the most formal way to ask a stranger, but with ağabey it can sound natural in everyday street speech.

It is clearly informal.

Signs of informality:

• Ağabey as direct address
• bir söylesene instead of a more formal request
• the overall conversational tone

A more formal version might be something like:

• Affedersiniz, şu köşede hangi dolmuşun durduğunu söyler misiniz?

That would be more suitable for polite interaction with a stranger in many contexts.

Turkish word order is flexible, but the neutral pattern is often subject/object + verb, with the verb at the end.

Here:

• Ağabey = address
• şu köşede = location
• hangi dolmuşun durduğunu = object clause, the thing being asked about
• bir söylesene = main verb phrase

So the sentence structure is roughly:

• Brother/man, at that corner, tell me which dolmuş stops

Natural English rearranges it:

• Hey, could you tell me which dolmuş stops at that corner?

Turkish often places important descriptive information before the final verb.

Yes, depending on context.

Because durmak can mean stand / stop / wait, possible translations include:

• which dolmuş stops at that corner
• which dolmuş waits at that corner
• which dolmuş is standing at that corner

If the question is about routes and pickup points, stops at that corner is probably the best translation.
If the speaker is looking at vehicles physically standing there, is waiting/standing there may fit better.

It could, but it would change the meaning.

• durduğunu = that it stops / is stopping
• duracağını = that it will stop

So:

• hangi dolmuşun durduğunu asks about the dolmuş that stops there as a general fact or current situation
• hangi dolmuşun duracağını would ask which one will stop there in the future

In this sentence, durduğunu is the natural choice.

Yes. Very much so.

The pattern:

• [embedded clause in -DIK form] + main verb is extremely common in Turkish.

Examples:

• Ne dediğini bilmiyorum. = I don’t know what he said / is saying.
• Nerede oturduğunu sordum. = I asked where he lives.
• Hangi otobüsün gittiğini biliyor musun? = Do you know which bus goes there?

So hangi dolmuşun durduğunu bir söylesene is a very useful example of a major Turkish grammar pattern. Learning to recognize:

• genitive subject
• -DIK clause
• possessive ending
• accusative will help a lot with intermediate Turkish.