phonetic

Simple Classification of English Vowels and Consonants

1.Classifation of English Vowels

a)Monophtongs

1)Front Vowels

2)Back Vowels

3)Central Vowels

b)Diphtongs

1)Rising Diphtongs

2)Centering Diphtongs

原文地址:https://www.cnblogs.com/gengsc/p/6848190.html