1. English Front Vowels & Central Vowels

2. English vowels & vowel classification The English pure vowels can be classified according to the height of the raised part of the tongue the part of the tongue raised the position of the lips

3. Three factors for the description of English vowels I. The height of the body of the tongue – highest point of tongue (vertical axis); II. The front-back position of the tongue – highest point of tongue (horizontal axis); III. The degree of lip rounding - lip posture

7. Tongue positions for English front and central vowels (unrounded):

8. /  / hit bit pit

9. /  / bet set head

10. /  / bat pat fat

11. /  :/ bird her fur

12. /  / about aware flower

13. Ex. Say the tongue twister and pay attention to the vowels. Betty Botter's Better Batter Betty Botter had some butter, "But," she said, "this butter's bitter. If I bake this bitter butter, It would make my batter bitter. But a bit of better butter, That would make my batter better." So she bought a bit of butter – Better than her bitter butter – And she baked it in her batter; And the batter was not bitter. So 'twas better Betty Botter Bought a bit of better butter.