英语教学课件unit02

1、English Pronunciation for CommunicationA Practical Course for Students of EnglishByWang GuizhenFaculty of English Language & CultureGuangdong University of Foreign StudiesConsonants of the English Language&Chinese EFL Learners Difficulties in the Learning ProcessWhy use phonemic symbols?The alphabet

2、 which we use to write English has 26 letters but (British) English has 44 sounds. Inevitably, English spelling is not a reliable guide to pronunciation becauseSome letters have more than one sound Sometimes letters are not pronounced at all The same sound may be represented by different letters Som

3、etimes syllables indicated by the spelling are not pronounced at all Questions:How do you pronounce gh in enough, through and ghost? (like f in fun, not pronounced, like g in got) How many syllables are there in chocolate? Phonemes Linguists classify the speech sounds used in a language into a numbe

4、r of abstract categories called phonemes. English, for example, has 44 phonemes, although the number varies according to the dialect of the speaker and the system of the classification. Phonemes are abstract categories which allow us to group together subsets of speech sounds. Even though no two spe

5、ech sounds, or phones, are identical, all of the phones classified into one phoneme category are similar enough so that they convey the same meaning. Description of the English consonantsEnglish consonants can be classified according to 1. the points of articulation2. the manners of articulation3. t

6、he state of the vocal cords Points of articulation 1. bilabial (two lips)2. labio-dental (top teeth/bottom lip)3. dental (tongue tip/top teeth)4. alveolar (tongue tip/tooth ridge)5. post alveolar (tongue tip or mid/hard palate)6. palatal (tongue mid/hard palate)7. velar (tongue back/ soft palate)8.

7、glottal Manners of articulation1. Stops (or plosives)2. Fricatives3. Affricates4. Nasals5. Lateral6. Approximants English Consonants1. Stops/Plosives - English has six bursts or explosive sounds produced by complete closure of the vocal tract followed by a rapid release of the closure - p, t, k, b,

8、d, g. 2. Fricatives - English has nine fricatives - weak or strong friction noises produced when the articulators are close enough together to cause turbulence in the airflow.3. Affricates - English has two affricates - plosives released with frication - church and judge. 4. Nasals - English has thr

9、ee nasals in which the airflow is blocked completely at some point in the oral tract, but in which the lowering of the velum allows a weak flow of energy to pass through the nose. 5. Approximants - English has four approximants - the w in won, the l in like, the r in red, and the y in yes. In these

10、phonemes, there is more constriction in the vocal tract than for the vowels, but less than the other consonant categories below. English consonants and their description /p/- voiceless bilabio stop /b/- voiced bilabio stop /t/- voiceless alveolar stop /d/- voiced alveolar stop /k/- voiceless velar s

11、top /- voiced velar stop /f/- voiceless labiodental fricative /v/- voiced labiodental fricative /- voiceless dental fricative /- voiced dental fricative /s/- voiceless alveolar fricatives /z/- voiced alveolar fricative English consonants and their description /- voiceless post-alveolar fricative /-

12、voiced post-alveolar fricative /h/- voiceless glottal fricative /t/- voiceless post-alveolar affricate /d/- voiced post-alveolar affricate /m/- voiced bilabial nasal /n/- voiced alveolar nasal /n/- voiced velar nasal /l/- voiced alveolar lateral /w/- voiced bilabial approximant /r/- voiced post-alve

13、olar approximant /j/- voiced palatal approximantThe pronunciation of /p/ and /b/The pronunciation of /t/ and /d/The pronunciation of /k/ and /g/音位变体位于词首且是重读音节中，送气：poke,tape,keep.位于词尾失去爆破：top tea, rob the man, sit still, take three, lag behind.两相同辅音相连，不爆破，延长发音时间：stop Pete, rob Bob, let Tim (比较let him

14、), sad Dave, take Kim (比较take him), big grapes./s/后辅音连缀不送气：spot, stop, sky.受相邻辅音影响：eighth, width(齿化), clock, padlock, glad (共发音舌侧爆破), keen,geese (发音部位前移).I.Learning of English consonantsII. Frequency of occurrence of English consonantsEx. 1 Write down the English consonants according to the descript

15、ion 1. _2. _3. _4. _5. _6. _7. _8. _Ex. 2Materials for reading aloud Americans eat breakfast and lunch quickly unless it is a social, business or family occasion. The evening meal is usually longer and a time for families to gather together. Rushing through daytime meals is part of the fast pace in America. Another reason for rushing through daytime meals is that many people eat in restaurants that are usually crowded with people waiting for a place so that they can be served and return to work at the proper tim