.Theadvantagefaroutweighthedisadvantages.

　　2.TheadvantagesofAaremuchgreaterthanthoseofB.

　　3.AmaybepreferabletoB,butAsuffersfromthedisadvantagesthat...

　　4.Itisreasonabletomaintainthat...butitwouldbefoolishtoclaimthat...

　　5.Forallthedisadvantages,ithasitscompensatingadvantages.

　　6.Likeanythingelse,ithasitsfaults.

　　7.AandBhasseveralpointsincommon.

　　8.AbearssomeresemblancestoB.

　　9.However,thesameisnotapplicabletoB.

　　10.AandBdifferinseveralways.

　　11.Evidently,ithasbothnegativeandpositiveeffects.

　　12.Peopleusedtothink...,butthingsaredifferentnow.

　　13.ThesameistrueofB.

　　14.WonderingasAis,ithasitsdrawbacks.

　　15.ItistruethatA...,butthechieffaults(obviousdefects)are...

　　二)原因

　　1.Anumberoffactorsareaccountableforthissituation.

　　Anumberoffactorsmightcontributeto(leadto)(accountfor)thephenomenon(problem).

　　2.Theanswertothisprobleminvolvesmanyfactors.

　　3.Thephenomenonmainlystemsfromthefactthat...

　　4.Thefactorsthatcontributetothissituationinclude...

　　5.Thechangein...largelyresultsfromthefactthat...

　　6.Wemayblame...,buttherealcausesare...

　　7.Partoftheexplanationsforitisthat...

　　Oneofthemostcommonfactors(causes)isthat...

　　Anothercontributingfactor(cause)is...

　　Perhapstheprimaryfactoristhat…

　　Butthefundamentalcauseisthat...

　　三)后果

　　1.Itmaygiverisetoahostofproblems.

　　2.Theimmediateresultitproducesis...

　　3.Itwillexerciseaprofoundinfluenceupon...

　　4.Itsconsequencecanbesogreatthat...

　　四)批驳

　　1)Itistruethat...,butonevitalpointisbeingleftout.

　　2)Thereisagrainoftruthinthesestatements,buttheyignoreamoreimportantfact.

　　3)Somepeoplesay...,butitdoesnotholdwater.

　　4)Manyofushavebeenundertheillusionthat...

　　5)Acloseexaminationwouldrevealhowridiculousthestatementis.

　　6)Itmakesnosensetoarguefor...

　　7)Toomuchstressplacedon...mayleadto...

　　8)Suchastatementmainlyrestsontheassumptionthat...

　　9)Contrarytowhatiswidelyaccepted,Imaintainthat...

　　五)举例

　　1)Agoodcaseinpointis...

　　2)Asanillustration,wemaytake...

　　3)Suchexamplesmightbegiveneasily.

　　4)...isoftencitedasanexample.

　　六)证明

　　1)Noonecandenythefactthat...

　　2)Theideaishardlysupportedbyfacts.

　　3)Unfortunately,noneoftheavailabledatashows...

　　4)Recentstudiesindicatethat...

　　5)Thereissufficientevidencetoshowthat...

　　6)Accordingtostatisticsprovedby...,itcanbeseenthat...

　　七)开篇

　　1)Manynationshavebeenfacedwiththeproblemof...

　　2)Recentlytheproblemhasbeenbroughtintofocus.

　　3)Recentlythephenomenonhasbecomeaheatedtopic.

　　4)Recentlytheissuehasarousedgreatconcernamong...

　　5)Nowadaysthereisagrowingconcernover...

　　6)Neverinourhistoryhastheideathat...beensopopular.