In my own ESL teaching adventures, I find that likening pronunciation to a physical activity (e.g. sports) can be useful. For example, I will ask if any students play basketball or soccer. I then ask students if they think they can use the same muscles and skills to win a swimming match. Of course, they say “no.” I then explain that they can’t necessarily use their L1 “muscles” to speak their target language (i.e. English), and that they need to develop what I call “English Muscles” in order to play this “sport” well. The analogy seems to work pretty well.
Today’s online edition of The Telegraph has an article specifically addressing learning to pronounce foreign languages. What do you think of it?