Yes, It is an interesting form.

The literal translation wouldnt sound good as you can see. I mean the subject is not very clear. "Mektup istemez " is more like "No need for letter " If it was ;

"Ahmet mektup istemez " then that would make more sense. And we can easly point the subject out which is " Ahmet "

" Ahmet wouldnt want letter "

belirteç eki ----> Adverb suffix

[zarf eki]

Some suffixes make some nouns adverbs.

ın,ün --->  Yaz [summer] + ın [suffix that makes it adverb] ---> In Summer

            Kış [ winter ] + ın  [suffix that makes it adverb] ----> In winter

            Güz [ Autumn ] + ün [suffix that makes it adverb] ----> In Autumn

            Gündüz [ daytime ] + ün [suffix that makes it adverb] ---> at day time

***************************************************************

ı,i ------> Geceler [nights] + i [suffix that makes it adverb ] ---> at nights

              Sabahlar [mornings] + ı [suffix that makes it adverb ] ----> in the  mornings

              Akşamlar [ evenings ] + ı [suffix that makes it adverb ]-----> in the evenings.

*******************************************************************

leyin ---> Sabah [morning ] + leyin  [suffix that makes it adverb ] ----> In the morning.

               Akşam [evening] + leyin   [suffix that makes it adverb ]-----> In the evening

belirtili nesne -----> determined direct object 

Object that is used with transitive verb [geçişli fiil].

Mustafa evi sattı -----> Mustafa sold the house.

Özlem okumayı sever ---> Özlem likes reading.

Ben sigara içmeyi bıraktım ----> I stopped smoking.

Çocuk yemeğini yiyor -----> The child is eating his/her food.

Gülden televizyonu bozdu ----> Gülden broke the television.

belirtili tamlama-----> genitival construction   

a genitive construction or genitival construction is a type of grammatical construction used to express a relation between two nouns such as the possession of one by another (e.g. "Ali´s jacket").A genitive construction involves two nouns, the head (or modified noun) and the dependent (or modifier noun). The dependent noun modifies the head by expressing some property of it. For example, in the construction "Ali´s jacket", "jacket" is the head and "Ali´s" is the modifier, expressing a property of the jacket (it is owned by Ali ).

Ali´nin ceketi ----> Ali´s jacket.

Evin kapısı -----> The house´s door [ The door of the house]

Onun evi ----> His/Her house

Ayşe´nin gelmesi ----> Ayşe´s coming

Ayşe´nin gelmesi bizi mutlu etti ----> Ayşe´s coming made us happy.

Bilgisayarımın klavyesi -----> My computer´s keyboard.

Onun Türkçesi çok iyi ----> His Turkish is very good.

belirtisiz tamlama ----->  shortened genitival construction  

 
shortened genitival construction as a Semi Compound Noun, they are the denominations which have more common genitive and possesive relations but which are more stressed and continuious. They reveal more various entity sorts and the name of the types as semi-compound noun :

Belediye başkanı konuşacak ---> The city manager will make a speech.

Bahçe duvarı yıkıldı ----> The garden wall collapsed.

Sokak kedisi ---> The street cat.

Van gölü -----> Van Lake

Yazı tahtası----> Writing board

Toros dağları -----> Toros mountains

belirtme durumu ---->  accusative

[-i hali ] [ -ı, -u, -ü; -y-i, -y-ı, -y-ü, -y-u ]

The accusative case of a noun is the grammatical case used to mark the direct object of a transitive verb.

 Evi gördüm ---> I saw the house. ---->  Ev + i

 Bahçeyi toparla ---> Tidy up the garden ----> Bahçe-y-i

 İstanbul´a gitmeyi düşünüyorum ---> I am thinking to go to İstanbul.---> gitme-y-i

 Üzümü yedi ----> He/She/it ate the grape ----> Üzüm-ü

 Türkçeyi nasıl öğrenebilirim ? ---> How can I learn the Turkish language ?--->Türkçe-y-i

birleşik ad  ----->  compound noun  

A compound noun is a noun that is made up of two or more words.

Cumartesi = Saturday -----> Cuma [Friday] + ertesi [the next,the following] = The following day after Friday. [note : "e" drops ]

Pazartesi = Monday ----> Pazar [Sunday] + ertesi [the next,the following] = The following day after Sunday. [note : "e" drops ]

Göktaşı = Meteor ----> Gök [ Sky] + taş [stone] + ı

Gecekondu = house put up quickly without proper permissions ---> Gece [night] + kon [to land] + du [past tense]

Maybe you should consider correcting the typo in the title. (Grammer -> Grammar)

 Eyvallah Mr.Si++ !! , It´s good to see you are reading my posts carefully.

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