Consonant sounds can be classified as bilabial, labiodental, dental, alveolar, palatal, velar, glottal, and nasal consonants.
The positioning of the tongue affects vowel production, with front-tongue positions producing high vowels (i/e) and back-tongue positions producing low vowels (a).
Vowel sounds are produced by the vocal cords vibrating to create sound waves that pass through the mouth and nose.
Tone is an important feature of many languages, including Chinese, Vietnamese, Thai, Lao, Burmese, Khmer, and some African languages.
Contrastive analysis can be used to develop teaching materials, assess language proficiency, and inform second-language acquisition research.
Contrastive analysis can be used as an aid in language learning, teaching, translation, and second-language acquisition research.
Labiodental consonants are formed by closure of the upper lip with the lower teeth, such as /f/ and /v/.
