A study of English language & phonetics(origin of language and all points of all questions)
Unit 1 1. The origin of language 2.The descent of the English language Unit 2 1. The air stream mechanism 2. The organs of speech Unit 3 1.the classification and description of speech sound:1.consonants 2. The classification and description of speech sound:2.vowels Unit 4 1.phonology 2. The syllable Thanks for reading, if it's useful please comment If you couldn't clearly read photo ,click the photo ,you can watch clearly.