这是语音学家级别的题目：

　　ago的go是绝对

　　bus是闭音节

　　bar是r-音节

　　bow是第五类音节

　　没有相对的.这些概念在英文文献中都很少使用了.

　　TherearesixdifferentkindsofsyllablesinEnglish:

　　ClosedSyllables:Aclosedsyllablehasoneandonlyonevowel,anditendsinaconsonant.Examplesincludein,ask,truck,sock,stretch,twelfth,andon.

　　OpenSyllables:Anopensyllablehasoneandonlyonevowel,andthatvoweloccursattheendofthesyllable.Examplesincludeno,she,I,a,andspry.

　　Silent-ESyllables:Asilent-esyllableendsinane,hasoneandonlyoneconsonantbeforethate,andhasoneandonlyonevowelbeforethatconsonant.Examplesincludeate,ice,tune,slope,strobe,andthese.

　　VowelCombinationSyllables:Avowelcombinationsyllablehasaclusteroftwoorthreevowelsoravowel-consonantunitwithasoundorsoundsparticulartothatunit.Examplesincluderain,day,see,veil,pie,piece,noise,toy,cue,andtrue.

　　Vowel-RSyllables:Avowel-rsyllableisonewhichincludesoneandonlyonevowelfollowedbyanr,oronevowelfollowedbyanrwhichisfollowedbyasilente,oravowelcombinationfollowedbyanr.Examplesincludecar,or,care,ire,air,anddeer.

　　Consonant-L-ESyllables:Inthesesyllables,aconsonantisfollowedbyle.Thevowelsoundinthesesyllablesistheschwasoundthatoccursbeforethel.Examplesinclude-ble,-cle,-dle,-fle,and-gle.

　　祝进步.

　　Friederich,W.P.(1958/1960).EnglishPronunciation:TheRelationshipbetweenPronunciationandOrthography英语读音规则与拼法(R.A.Martin&缪廷辅,Trans.).London,UK;Beijing,China中国北京:Longmans,Green&CoLtd.;TheCommercialPress商务印书馆.