In this video ,I have learned how to use the International Phonetic Alphabet (IPA) to practice English pronunciation. This is my first time to know IPA before I only know 26 letters in English alphabet in my earlier study .
Improve your English Pronunciation! | mmmEnglish
In fact,there are 44 different sounds including vowels ,diphthongs and consonant.
consonants including unvoiced and voiced
different phonetic alphabet :学习音标，这一篇就够了 - 知乎 (zhihu.com)