... Pairs of English vowels such as /i:/ and /ɪ/, /æ/ and /e/, /ɔ:/ and /ɔ /, /з:/ and /Ə/, /ɑ:/ and /ʌ /, /u:/ and /ʊ/ are compared with Vietnamese vowels /i/, /Ɛ/, /o/,/ɣ/,/a/ and /u/ Spelling ... consonants of which twenty-one are in the first and six in the final position of syllables • Consonants in the first position Consonants are divided into groups based on manner of articulator and ... following topics could be best to study: - The interference of mother tongue as Vietnamese in learning English intonation at high school -A contrastive analysis between Vietnamese and English intonation...