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...