实用英语语音学ppt课件.ppt

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1、Nasal cavity -鼻腔Mouth cavity-口腔Tongue-舌Lips-唇Teeth-齿The teeth ridge-齿龈The hard palate -硬腭The soft palate -软腭 uvula -小舌Pharynx -咽头Larynx- 喉头The vocal cords- 声带Windpipe -气管 Vowels are sounds produced without obstruction of the air stream in the mouth. In producing them there is vibration of the vocal

2、cords, so all vowels are voiced . In English there are twenty vowels in all. Consonants are sounds produced by some form of obstruction of the air passage and be either voiced or voiceless .There are twenty-eight consonants in English./r /, /j/ ,/w/ 1)The height of the raised part of the tongue: we

3、distinguish open vowels, half-open vowels, half-close vowels and close vowels.2)The part of the tongue raised : we distinguish front, back and central vowels.3)The length of the vowel: we distinguish long vowels and short ones.4)The position (or shape) of the lips: we distinguish rounded vowels and unrounded ones.5)The degree of tenseness: we distinguish tense vowels and lax vowels.,