Have you ever  spoken to an American speaker of English? Or are you giving this information based on received pronunciation? I can´t imagine anyone saying the words bad or sad using a short vowel.You would say, vowels succeeded by fortis plosives are rendered a tad shorter while those used before lenus ones are rendered slightly longer. This is all linguistic bullshit. Real people don´t talk like that unless they want to mimic the voices on language teaching tapes.

Your idea about Turks rendering the word "ben" like  "hat" is pointless...

As a matter of fact, one needs to have certain criteria when comparing vowels. One of the important parameters is the length of a vowel. In Turkish all vowels are short ones. In English there are both short and long vowels. The ´ae´ sound of English is a long vowel whereas all the variations of ´e´ in Turkish are short.

You certainly speak another version of Turkish... I never say "baen" or "saen". Nevertheless, the "e" used in Turkish is not the same as the English "e". To my knowledge, there is a certain "gay talk"  which probably mimics the way a coquette renders certain words.  You would hear those baens and saens (ben and sen) only in those circles (in addition to those under Arabic influence.)

By the way, I made a spelling mistake and wrote "wovel" instead of "vowel".

In Turkish, the vowel used in the word "hat" does not exist. Nevertheless, there are people, especially those with Arabic or Kurdish lineage, speaking Turkish as a secondary language. Those people usually substitute the vowel "a" with the Arabic or Kurdish wovel "ae".

There are 8 wovels in the Turkish language and their use is bound by the two wovel harmony rules which govern the use of what we may call as hard and soft wovels as well as round and plain vowels. Accordingly, a hard vowel (a,ý,o,u) cannot coexist with a soft wovel (e,i,ö,ü in the same word. Furthermore, plain vowels (a,i,ý,e) cannot be used together with round vowels (o,ö,u,ü. You can easily determine the originality of a word by checking it against these two vowel harmony rules. 

True but those who have gone through the hardships of learning a language know how disheartening even the slightest criticism can be. Some learners tend to be proud of their command of the target language while some may be extremely pessimistic about it. Learning  a language is a long term commitment and it requires a lot of motivation. Let us not dishearten them.

We should accept that unless they live in our society for years they can´t be expected to be on a par with our native language skills.

For example, after so many years of learning, speaking and practicing, I am still not very happy with my own English.

 Your English is good enough. There is no need for criticizing you for the mistakes you make. After all, you built your part of the bridge to close the gap of communication with the lazy half of the world who cannot speak any other language than their own. With so many non-native people speaking English today, a new form of language called International English has come into existence. We can claim to be the native speakers of that language. 

International English was a dream for the first British merchants who had been sending English language newspapers abroad, now the dream has come true. English may have won the contest thanks to its simplicity. Now is the time to peek fun at non-native speakers. The web is full of examples.  

That does not stray from the basic tenet of Piaget at all. Of course, language acquisition theories are too voluminous to comprehensively discuss here. According to Piaget, a baby learns how to use its tongue just as the way it learns how to use its other organs.  Many skills and talents are learned the difficult way, just like the way blacksmith makes a sword on anvil by pounding on it with his hammer for hours. Once formed, it becomes perfect. All native speakers are thought to have a perfect command of their languages unless they are impaired. You might argue, there must be a difference among people´s language skills according to vocabulary use and the level of eloquence. True but all the extra skills are indeed extras and they reside in the intellectual capacities of individuals rather than in their linguistic proficiency. A garbage collector can not speak like say the President but on the other hand the President will not be able to realisticly mimic a garbage collectors use of the language either.

There are situations where I can overwhelm say a New Jersey woman with my knowledge of vocabulary. She may not understand the meanings of a number of words I might say but on the whole my command of English is not even comparable to hers.  She will always feel more comfortable in English. People will always understand her with greater ease and she will perform her daily tasks a lot more easier than a non-native speaker. In the evening, I may draw a volume of Paradise Lost by Milton  from my book shelf and enjoy reading it. Many native speakers can not comprehensively read a book like that. This l however, will not change the fact that my English is poor by their standards.

Henry Piaget answers your question, he proposed that there is a special phase in a childs mental development where the brain accords itself to the wovel positions, fundamental syntactic rules and a set of other properties specific to one´s own native language. Once this language acquisition window is closed it may be virtually impossible for an individual to truely acquire a language. Bilingualism or trilingualism is possible in practice but in reality no matter how many languages one can speak, only one of them is his/her native language. It is generally accepted that the language that you do the calculations with is your native one.

Unless, you are giving up your identity or thinking of working as a spy in another country, don´t ever think of becoming a native speaker.  There are a lot more to add on top of the mastery one gains in the early years of life. These include local dialects, thinking patterns, accents, jargons and slang...

Since there is not a one-word equivalent of "açýlým", we could paraphrase it in context like this:

(Government´s) new Kurdish policy which is free from the restraints of the established status quo.

when we drop the extras, it becomes the governmen´t new Kurdish policy...

By the way, acilim an ac are not the same things. For example the verb yaz means to write; yazýlým on the other hand, means software...

A cute picture and a disclaimer must be the hallmark of attractive women on the net.

Check out my picture, you see how irresistable I am but don´t even think about sending me that PM.

OK. OK. Just joking I know how wrong I am...