recognition
EFL teachers are advised to analyse the root cause of students pronunciation errors. For example, if a Thai student of English utters the sound /tc/ instead of / sh ch/ in words such as ............ or...., it can be recognized that the sound /sh ch/ does not exist in thai and Thai learners of English are prone to use their native Thai fricative /tc/ in place of the target sound / sh ch / . From Bowman's (2000) analysis, recognizing that the feature /tc/ is quite similar to that of the English sound /tf/ , except the raising of the tongue tip for the target sound, it is therefore advisable that EFL teachers train their students to listen to and identify the sound /tf/ before the sound /sh ch/ , and to have them practise articulating the sound /tf/ before the target sound /sh ch/