There are several kinds of English phonetic symbols.

Number of English phonetic symbols: 48 in Britain and 46 in the United States.

American vowel (18)

Monovowel: /i//? / /e/ /？ / /? / /a/ /？ / /? / /? / /? / /o/ /ɑ/ /？ / /? / /u/

Diphthongs: /a? / /a？ / //

Note: In some places /a/writing/ɑ/ is pronounced, and sometimes it is customary to pronounce the position of single vowel /o/ as double vowel /o? /,pronounce the position of single vowel /e/ as double vowel /e? /。

English vowels (20)

Monovowel: /i://? / /e/ /？ / /? / /? / /? / /? :/ /? / /u:/ /？ / /ɑ:/

Diphthongs: /a? / /e？ / /a？ / // // // /e？ / //

Note: the long vowel symbol/:/in the British phonetic alphabet is abandoned in the American phonetic alphabet, which is the biggest difference between the British and American phonetic alphabets.

Pronunciation methods of English international phonetic symbols;

1, /i:/ The tongue touches the lower teeth, the lips are flat and smiling, and a long sound of "one" is emitted. It is the pronunciation of the letters ea, ee, ey, ie, or ei in words. This sound is a long vowel, so it must be pronounced completely.

2、/? /The tongue touches the lower teeth, the lips are flat and separated, and the gums are close to the whole tongue, making a short "ei" sound. It is the pronunciation of the letter I or Y in a word, and it should be short and light.

3、/? /The lips are flat, the front of the tongue is slightly raised, the tip of the tongue is pressed against the lower gum, the gum is opened, the soft palate is raised, and the lips are naturally opened. Pronunciation of the letter a in closed syllables or stressed closed syllables.

4./e/ The tongue is close to the hard palate, and the tip of the tongue pushes the lower teeth, and the gums are half open and half closed, making a smile. It is the pronunciation of the letter e or ea in the word.

5./з:/ The tongue is raised, the lips are in a natural state, and the mouth is half open and half closed, making a long sound of "e". It is the pronunciation of the letters er, ir, or or ur in a word.