Vowel refers to the part of Chinese Pinyin except initial consonant and tone.
The structure of vowels consists of a rhyme head (middle tone), a rhyme belly (main vowel) and a rhyme ending. Some vowels have no rhyme, others have no rhyme, but they should have a rhyme.
There are three kinds of vowels: single vowel, compound vowel and nasal vowel.
A vowel consists of one vowel. The pronunciation characteristics of vowels in single vowels are consistent mouth shape and tongue position from beginning to end. There are ten vowels in Mandarin: A, O, E, Mi, I, U, ü, -i (front), -i (back) and er. Basic education generally only studies six subjects: a, o, ei, u, u.
A compound vowel is a combination of two or three vowels. There are thirteen vowels in Mandarin: ai, ei, ao, ou, ia, ie, ua, uo, üe, iao, iou, uai and uei. There are only nine preschool students in general basic education. According to the position of the main vowel, vowels can be divided into pre-voiced vowels, middle-voiced vowels and post-voiced vowels.
Nasal vowels consist of one or two vowels followed by nasal consonants. There are sixteen nasal vowels: an, ian, uan, üan, en, in, uen, ün, ang, iang, uang, eng, ing, ueng, ONG and ong. The first eight are called nasal vowels, and the last eight are called nasal vowels. In basic education, there are only the first four nasal sounds before school and the first four nasal sounds after school.
Vowel System in Basic Education