Bankadaki memur, dilekçeyi vezneye bırakmamı istedi.

bankadaki breaks down as:

• banka = bank
• -da = in / at
• -ki = a suffix that turns that location phrase into something like the one that is in/at ...

So bankadaki memur means the clerk/officer at the bank.

This -ki structure is very common in Turkish:

• masadaki kitap = the book on the table
• bahçedeki çocuk = the child in the garden
• bankadaki memur = the clerk at the bank

So instead of saying a full relative clause like the clerk who is at the bank, Turkish often uses -daki / -deki.

Because memur is the subject of the sentence, and Turkish subjects are often in the basic dictionary form, with no special ending.

Here:

• Bankadaki memur = the bank clerk
• istedi = asked/wanted

So Bankadaki memur is the person doing the asking.

Turkish does not usually mark the subject with a special suffix the way it marks objects or destinations.

The ending -yi is the accusative case marker, used for a specific/definite direct object.

Breakdown:

• dilekçe = petition / written request / application
• dilekçeyi = the petition / the application, as the direct object

Why -yi and not just -i? Because the noun ends in a vowel, so Turkish inserts a buffer letter y:

• dilekçe + -(y)i → dilekçeyi

This is very common:

• arabayı = the car
• kapıyı = the door
• dilekçeyi = the petition

So dilekçeyi shows that this is the specific thing being left somewhere.

vezneye is:

• vezne = cashier’s desk / teller / payment counter
• -ye = dative case, meaning to / toward

So vezneye means to the counter/teller/cashier desk.

Again, because vezne ends in a vowel, Turkish uses the buffer y:

• vezne + -e → vezneye

Compare:

• okula = to school
• eve = to the house/home
• masaya = to the table
• vezneye = to the cashier/teller desk

bırakmamı is a very important structure in Turkish. It breaks down like this:

• bırak- = leave / put down / submit
• -ma = verbal noun marker
• -m = my
• -ı = accusative case

So:

• bırakma = leaving
• bırakmam = my leaving
• bırakmamı = my leaving (as the object of another verb)

In this sentence, the whole phrase dilekçeyi vezneye bırakmamı means something like:

• my leaving the petition at the counter
• or more naturally, that I leave the petition at the counter

This whole subordinate clause is the thing that was requested.

This is one of the most useful distinctions in Turkish.

bırakmayı istedi

This usually means:

• he/she wanted to leave it
• The subject of wanting and the subject of leaving are the same person.

bırakmamı istedi

This means:

• he/she wanted/asked me to leave it
• The -m shows that I am the one who should do the leaving.

So the possessive ending inside the verbal noun tells you who is supposed to perform the action.

That is why bırakmamı istedi is the correct form here.

Because in Turkish, istemek can mean more than simple personal desire.

It can mean:

• to want
• to request
• to ask for
• in some contexts, to ask someone to do something

With a structure like [someone’s action]-ı istedi, it often has the sense of:

• wanted X to happen
• wanted me/him/her to do X
• asked/requested that I/he/she do X

So bırakmamı istedi is very naturally understood as asked me to leave it or wanted me to leave it.

Because Turkish often puts that information inside the verb-like noun form itself.

In bırakmamı, the -m already tells you that the action belongs to me:

• bırakmam = my leaving
• bırakmamı istedi = asked for my leaving / asked me to leave

So Turkish does not need a separate pronoun like beni here.

This is very different from English, where we usually say:

• asked me to leave it

Turkish often encodes that me inside the suffixes.

The overall structure is:

• Bankadaki memur = subject
• dilekçeyi vezneye bırakmamı = subordinate clause functioning as object
• istedi = main verb

A very literal structure is:

• The clerk at the bank [my leaving the petition at the counter] requested/wanted.

This is normal Turkish style. Turkish often places the main verb at the end, and a whole noun-like clause can stand before it as the object.

So the sentence is built in a very Turkish way, even if it feels backwards from English.

The comma is mostly a punctuation/style choice here. It separates the subject phrase from the rest of the sentence:

• Bankadaki memur, dilekçeyi vezneye bırakmamı istedi.

It helps readability, especially because the middle part is a bit long.

In many everyday contexts, you may also see the sentence without the comma:

• Bankadaki memur dilekçeyi vezneye bırakmamı istedi.

Both are understandable. The comma does not change the grammar in any major way.

Yes, Turkish word order is flexible, but the given version is very natural.

The neutral order is roughly:

• subject + object/subordinate clause + verb

So this sentence is already in a common pattern.

You might sometimes hear variations for emphasis, but the verb usually stays near the end:

• Bankadaki memur dilekçeyi vezneye bırakmamı istedi.
• Dilekçeyi vezneye bırakmamı bankadaki memur istedi.
  This gives more emphasis to the action/request.

For learners, the original word order is a good standard model.

That y is a buffer consonant.

Turkish often avoids putting two vowels directly next to each other when a suffix is added. So when a noun ends in a vowel and the suffix begins with a vowel, y is inserted.

Examples from this sentence:

• dilekçe + -(y)i → dilekçeyi
• vezne + -(y)e → vezneye

More examples:

• araba + -(y)ı → arabayı
• masa + -(y)a → masaya

This is a very common pattern, so it is worth getting used to early.

It depends on context. bırakmak is a broad verb that can mean:

• to leave
• to put down
• to drop off
• to submit in some practical contexts

With dilekçeyi vezneye bırakmak, the idea is probably something like:

• leave/drop off the petition at the counter
• possibly submit it at the counter

So the exact English wording can vary, but the Turkish grammar stays the same.

Yes, Turkish has other ways to express reported requests or instructions, but this sentence uses a very compact nominalized structure.

For example, Turkish can sometimes use patterns with söyledi or dedi plus -mamı or diye, depending on the nuance.

But:

• bırakmamı istedi

is a very standard and natural way to say that someone wanted or asked me to do something.

So for a learner, this sentence is a great example of the pattern:

• [verb stem] + ma/me + possessive + accusative + istedi

meaning:

• asked/wanted someone to do something