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1、Makecomments列举影响分析原因发表观点列举影响Topicsentence(产生影响)概括某一方面的影响具体举例Topicsentence(产生影响)Itwillexertaprofoundinfluence.Thereareanumberofeffect.Thepositive/negativeeffects,whicharewidelyaccepted,canbelistedasfollows.Thenegativeeffects,whicharegenerallyacknowledged,arepresentedbelow.…isharmful/beneficial
2、inmorethanoneway.ItleavessomeseriousconsequencesItmaygiverisetoahostofproblems过渡句1Theimmediateresultitproducesis…Perhapsthemostseriousconsequenceis…过渡句2Theinfluenceisnotconfinedtowhatismentionedabove.What’smore?Tobeginwith,…Tomakemattersworse,…Theworstofall,…Topicsentence环境污染对人有影响概括的影响1水污染对人的
3、影响，举例概括的影响2大气污染对人的影响，举例概括的影响3森林退化对人的影响，举例Thefakecommoditieswouldsabotagethenation.Thepoorquality,sometimesevenpoisonousfoodisthreateningpeople’slife.Nobodywoulddenythattheissueofmilkpowderwillhappenagain,iftheconcernisnotraisedoverthefoodsecurity.Inaddition,……分析原因Topicsentence(原因)First,原因1+例证
4、Second,原因2+例证TopicsentenceWhy…?Whathascausedthe…?Whatontheeartharethereasonsforthephenomenon?Whatintheworldisresponsiblefortheproblem?Thereareseveralreasonsforthephenomenon.Thecausesforthephenomenon,whicharequiteobvious,canbelistedasfollows.Theanswertothisprobleminvolvesmanyfactors.Thereasons
5、forthefact,atleasttome,arenotdifficulttofind.Anumberoffactorscouldaccountfortheproblem.Thefactorsthatcontributetothephenomenoninclude…层次过渡句原因1Themostimportantreasoncitedbypeopleis…Oneofthemostpopularreasonsis…原因2Anotherimportantreasonis…Alsoplayingapartis…Inaddition,…isalsoresponsiblefortheph
6、enomenon原因3Thethirdreason,whichcannotbeneglected,isthat…Duetovariousreasons,theecologicalbalancehasbeendestroyedseriously.Incurrentcommercialsociety,peoplehavetakenallkindsofmeasurestopursueprofits,asaresultofwhich,over-fishinghasbecomeaprevalentpractice.Onceitisreportedthatinacertainriver,th
7、elimitoffishingwas5000tonsperyear,however,therealamountwasfarbeyondthelimit.Besides,theenvironmentalpollutionisanotherimportantcause.Therapiddevelopmentofscienceandtechnology,thepopulationexplosionandlarge-scaleindustrialproductionhaveresulte
