What are the five long vowels and eight diphthongs of the phonetic alphabet?

8 diphthongs: /e? 、a？ /、/? /、/? /、/e？ /、/? /、/? /、/a？ /

1. Phonetic interpretation: Is the phonetic symbol a record? Phonemic symbols are phonetic symbols. Its formulation principle is: a phoneme is only represented by a phonetic symbol, and a phonetic symbol not only represents a phoneme (? Diphthongs consists of two phonemes, and? For single vowels. Phonetic symbols composed of two phonemes are called diphthongs, such as Chinese phonetic symbols, English Webster phonetic symbols, international phonetic symbols and so on.

2. Interpretation of vowels: vowels, also known as vowels, are a kind of phonemes, as opposed to consonants. Vowel is the sound made by air flowing through the mouth without obstacles when pronouncing. They are divided into high vowels, middle vowels and low vowels. When vowels are pronounced, the highest point of the tongue moves to the front of the mouth and arches slightly. When vowels are pronounced, the root of the tongue is raised to the soft palate. The position and shape of lips are the third criterion for vowel classification.