失去爆破和音的浊化

1、失去爆破两个爆破音（ /p/, /b/, /t/, /d/, /k/, /g/）在一起，前一个爆破音常常失去爆破， 即不发音，只有一个发音的动作， 听起来有略微停顿而没有将音发出。 For example, a big bag 中， /g/ 失去爆破。也叫 “ 完全失去爆破”。如果爆破音后为摩擦音（/s, z, f, v, ?, , ?, e/ ）； 破擦音 (/ ? , ? , tr,dr, ts, dz/) ；和鼻音 (/m, n/ ) 时， 有轻微的失爆现象，为“不完全失去爆破”。Words and expressions:Kee(p) backgra(p)e sugarjo(b) de

2、scriptionCa(b) driverpe(t) dogswee(t) dreamBlac(k)boardli(k)e thisdo(g) biscuitBi(g) churchSentences:1: My favorite program isThe Roa (d) to Music .2: He wa s inthe lea (d) during the race.3: I wond er ifyou coul (d) tell me something about France.4: Have you rea(d) today s newspaper?5: The novel de

3、scribes a vivi(d) pi (c) tur e o f life in a village.6: He organized a bi (g) band.7: I belie ve y ou ll ma(k) e good.8: The wor k is a bi (t) difficult (t) for me.9: Wha (t) day is today?10: She is no (t)sli m e nough to wear these tigh(t) trousers.11: That woul (d) certainly be convenient.12: Prof

4、essor Green has a dee (p) mind.13: On e o f them wen (t)north, and the other wen(t) south.14: I m drawing a(t)whie bear on the bla (ck) board.15: A: I wan t acup o f bla (ck) coffee. How about you?B: I want whi(t) e coffee.Pair Practice:A: Excuse me. Is this the No. 10 bus?B: No. This is the No.20 b

5、us.Oh, I am on the wrong bus.Where are you going?I m going to the Natural Museum.You can get off at the next stop and change to the No.9 bus.Thanks a lot.You are welcome.One day in a drawing class, the teacher told the class to draw an abstract drawing.After a while, a small boy turned his drawing i

6、n. The teacher looked at itbut saw nothing, only a piece of white paper.“ What did you draw?” said the teacher.“A cow eating grass,”the boy answered.“ Where is the grass?”“ The cow has eaten it up,”replied the boy.“ Well, but where is the cow?” the teacher asked again.“ It ate up the grass and then

7、went away to drink water.”音的浊化口语中有些清辅音受前后音影响，发生浊化，听起来近似于其对应的浊辅音，如 speak /spi:k/的实际读音近似于 /sbi:k/ 。清辅音： /p/, /t/, /k/, /f/, /s/, /h/, /, /?浊辅音： /v/, /z/, /r/, /w/, /j/, /e/, / /, /b/, /d/?辅音的浊化比较常见的有两种：辅音 /s/ 后的清辅音常有浊化现象。 如 speed /spi:d/ 中的 /p/ 浊化为/b/ 。这种浊化主要表现在清辅音/p/ /t/ /k/ /tr/上。该现象不仅出现在一个词内部，也出现在连

8、读中。Practice:sportexpensivespendschoolsculptureskirtsquaresquirrelsqueakstrikeAustraliastreetHis sis t er likes all kinds of sports.Miss Green s skirt is very expensive.The s t atue in the park has been st olen.A: We plan to build a building here.B: I m agains t it.如果清辅音 /t/ 在非重读音节中， 且前后都为元音时， 该辅音常会浊

9、化，读音近似于浊辅音 /d/ 。如 better /bet ?r/ 在实际读音中近似于 /bed ?r/ 。这种现象出现在一个词的内部，也出现在连读中。该浊化现象主要出现在美语中。/t/ 处于重读音节，不发生浊化/t/ 处于非重读音节，发生浊化ton /t?n/cotton /k?d?n/term /t?:m/better /be d?r/late /leit/later /leid?r/fourteen /f?r ?ti:n/forty /f?r di/guitar /gi?ta:r/get across /ge d? ?kr ?s/Practice:I lltell you the news lat er.You ll get bett er soon.The black coffee is bitt er.Let sdis cuss the handwrit ing together.Wha t advice did Ms. Black give you about the school reform?I go t a