Quote Originally Posted by TATY
I don't know why you are still trying to argue your point, as I am stating a fact, that almost all Foreign Language learning books, teach the student how to pronounce the foreign language by using sounds from their native language.
I do not argue this fact. I myself was taught in this manner - see comment re sheep/ship. The difference was taught in a very vague manner ( like short/long ), terms like open/close, front/back sounds were never referenced. I just said it's wrong.

Yes, some people can't ever develop good pronunciation in a foreign language, but that's not to say that it is because they were taught the sound system the wrong way.
If they were never taught how to pronounce this or that sound,
just were used to histen how others do it, how can they develop it?

Do you really think that using IPA with native English speakers, to try and teach them Russian sounds on Page 1 on a beginner's book would be a good idea? 90% of readers would give up by page 3.
No i don't. But when the question 'how this or that sounds' is raised, explaining it using only sounds from native language is wrong. IIRC, both 'th' were taught before any words with them, in the way 'put your tongue there, then do this and this'. Without any analogies like s/z/t. 'I' in ship/sheep lacked this. Pity.

edit: Ps. The differences between alveolar and dental sounds d/t/n etc. , were also given at the very beginning,