LBL-Reader Pronunciation: /s/ vs /z/ For many Thai speakers, these two sounds are difficult because the "buzzing" /z/ isn't common in the Thai language.
Thai Pronunciation: The Ghost "R" English loves to smash consonants together (like C+R, B+R, or F+R). But your mouth might find it easier to just skip the difficult "R" sound.
EN-TH Pronunciation: SH vs CH For many English learners, the SH (/ʃ/) and CH (/ʧ/) sounds are very similar.