Yes. There are two different things here: * Learning how to pronounce the sounds of English: for example, how to pronounce (standard) English /a/, which is, of

Yes. There are two different things here: * Learning how to pronounce the sounds of English: for example, how to pronounce (standard) English /a/, which is, of course, different from (standard) German /a/. * Learning which sounds to use in a particular word: for example, is "swap" pronounced /swap/? (It isn't, of course. In practice most of the difficulties are caused by names of people and places.)