一)比较 　　1.Theadvantagefaroutweighthedisadvantages. 　　2.TheadvantagesofAaremuchgreaterthanthoseofB. 　　3.AmaybepreferabletoB,butAsuffersfromthedisadvantagesthat... 　　4.Itisreasonabletomaintainthat..butitwouldbefoolishtoclaimthat... 　　5.Forallthedisadvantages,ithasitscompensatingadvantages. 　　6.Likeanythingelse,ithasitsfaults. 　　7.AandBhasseveralpointsincommon. 　　8.AbearssomeresemblancestoB. 　　9.However,thesmeisnotapplicabletoB. 　　10.AandBdifferinseveralways. 　　11.Evidently,ithasbothnegativeandpositiveeffects. 　　12.Peopleusedtothink...,butthingsaredifferentnow. 　　13.ThesameistrueofB. 　　14.WonderingasAnbspis,ithasitsdrawbacks. 　　15.ItistruethatA...,butthechieffaults(obviousdefects)are... 　　二)原因 　　1.Anumberoffactorsareaccountableforthissituation. 　　Anumberoffactorsmightcontributeto(leadto)(account&bspfor)thephenomenon(problem). 　　2.Theanswertothisprobleminvolvesmanyfactors. 　　3.Thephenomenonmainlystemsfromthefactthat... 　　4.Thefactorsthatcontributetothissituationinclude... 　　5.Thechangein...largelyresultsfromthefact&nspthat... 　　6.Wemayblame...,buttherealcausesare... 　　7.Partoftheexplanationsforitisthat... 　　Oneofthemostcommonfactors(causes)isthat... 　　Anothercontributingfactor(cause)is... 　　Perhapstheprimaryactoristhat… 　　Butthefundamentalcauseisthat... 　　三)后果 　　1.Itmaygiverisetoahostofproblems. 　　2.Theimmediateresultitproducesis... 　　3.Itwillexerciseaprofoundinfluenceupon... 　　4.Itsconsequencecan&nbpbesogreatthat...