The problems that Thai students experience in pronouncing
English correctly have been well-established (e.g. Boonruang 1993,
1996; Bavorn 1994; Sripimol1996; Varakorn 1997; Ongarch 1998;
Rachanee 2000; Sompit 2001). Englishsounds (f) and (V)2 in particular are
problematic for Thai learners for several reasons. In English, while (f)
occurs both in syllable initial and syllable final positions, in Thai it is
restricted to syllable initial position. The pronunciation of initial (f) in
English therefore, while not being a problem for Thai speakers in words