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, 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…