MONOPHTHONGS, DIPHTHONGS AND TRIPHTHONGS

Monophthongs: A single vowel sound.

Diphthongs: Two vowel sound put together. A More open position glides into more close position.

Triphthongs: A dipththong plus another vowel sound.

All sounds are important in English so we must constantly practice with all Vocal sounds, so the impotence of phonetics and phonology.   The monophthongs and diphthongs total 14 vowel sounds, perhaps the smallest vowel system of any long-established variety of English. Urban Texas is also abandoning the ‘y’ sound after ‘n’, ‘d' and ‘t’, exchanging diphthongs for monophthongs. A study of Tunisian women in Morocco showed that older women categorically use diphthongs/aw/and/aj /, while middle-aged women alternate between diphthongs and monophthongs.