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1、 Nasals,Approximants&atefal/O/a/&/O/e/Nasals,Approximants仁Lateral(s)Likethestops,thenasalsareallmadebyclosingthevocaltractatsomepointinthemouth.Unlikethestopsoranyothersoundsinthelanguage,thereisanopeningintothenasalcavityibthePronunciationsothatthesoundcanberesonatedthroughthenose.Thenasalconsonant
2、sare/Im/,/m/,and/袅/./w/,/t/,andarecalledapproximantsbecauseitisanarticulationinwhichthearticulatorsapproacheachotherbutdonotgetsu伸cientlyclosetoeachothertoproducea“complete“,consonantsuchasastop,nasalorfficative.人iscalleda“lateral“becauseduringitspronunciation.thePasSsageofairthroughthemouthdoesnotg
3、ointheusualwayalongthecentreofthetongue-UNIT9/O/y/&/汉英对比:/O/汝辅音发音时,双唇闭拢,气流从鼻腔泻出,声带振动./9/的发音近似于汉语的“母“,但区别之处在于发/ay/时要双唐紧闭,声带振动./马/浊粲音.发音时,舌尖贴上齿龈,形成阻碍,气流从鼻腔洗出,声带探/的发音接近于汉语的“恩“,但不同之处在于发/时,嘴唇徽开,舌尖贴紧上齿龈/吴/测辅音.舌后部抬起紧贴软腭,形成阻碍,同时软腭下垂,堵住口腔通道,气流从鼻腔泻出,声带振动./的发音近似于汉语“嘲“,但不同之处在于:发/&/时口腔开得更大,声带振动Re蛇Sccionnpoloioer
4、onofin/&/&/|Fig46.Secfionandpalatogram0州/闯sang|Fig.45.Seclionandpalatogramofn/o/s单词发音练习moonhomemedicinemountainman-madecotmetotmottOWYmakeamistaketmiddlename1。句子A:Mumhascomebackhome.B:Marvellous.A:Mumsayswe“goandSeeamovietonight.BB:Yesywecertainlywill.Allophonicvariationsof/m/Syllabic:somethingLengthened,whenanarresting/myisfollowedbyaTeleasing/m/:somemoreThelabiodnetalnasal,whenfollowedby/:comtfiorthneatbtandytelePhOnenhumbetahegativeahsWethatdentheneck
