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1、倒三角形写作法即主题句出现在文尾。在细节后，归纳要点、印象、结论、建议或结果，以概括主题。这是英语中最常见的归纳法写作方式，即细节表述的句子在前，概括性的句子居后，主题句则常位于末段。例题1：(2004年全国卷IVA篇)ThefamousAmericangorilla(大猩猩)expertDianeFosseyhadacompletelynewwaytostudygorillas—shepretendedtobeoneofthem.Shecopiedtheiractionsandwayoflife—
2、eatingplantsandgettingdownonherhandsandkneestowalkthewayagorilladoes.Itwasanewrelationship.DianeFosseywasmurderedinRwandain1985andherstorywasmadeintothepopularfilmGorillasintheMist.ItwasalongwayfromKingKong,whichisaboutagorillaasamonster(afrighteningan
3、imal),andhelpedtoshowanewidea:therealmonsterisman,whilethegorillaistobeadmired.Todaytherearethoughttobearound48,000lowlandgorillasandmaybe400—450mountaingorillasinthewild.FromtheCongoinWestAfrica,toRwandaandUgandafurthereast,theyareendangeredbyhuntinga
4、ndbythecuttingdownoftheirforesthomes.Sometimeago,IfoundinmyletterboxalittlemagazinefromtheWorldWideFundforNature.Ithadtwophotossidebyside.Onewasofayounggorilla.“Thisisaspeciesofmammal(哺乳类动物),”saidthewordsbelowit.“Itisbeingdestroyedbyman.Wemustsaveitfor
5、ourowngood.”Theotherphotoshowedahumanbaby.Thewordsalsoread,“Thisisaspeciesofmammal,”butthenwenton:“Itisthemostdestructive(破坏性的)onearth.Wemustretrainitforitsowngood.”56.Thetextmainlytalksabout_____.A.DianeFosseyB.thegorillasinRwandaC.theprotectionoftheg
6、orillasD.thefilmGorillasintheMist答案与解析：选C。文章第一段谈到DianeFossey大猩猩的研究；第二段谈到根据她的事迹所拍摄的影片；第三段谈到了大猩猩数量减少的原因；最后一段谈到保护大猩猩的宣传措施。前面三段都是为最后一段作铺垫的,从最后一段“Itisbeingdestroyedbyman.Wemustsaveitforourowngood.”可知，最主要的目的还是要人们保护大猩猩。例题2：OntheInternet,wecanreadnewsathomeand
7、abroadandgetasmuchinformationaswecan.Weoftensende-mailsormaketelephonecallstoourfamiliesaswellastoourfriendsbyInternet.What’smore,wecangotoschoolonthenet,readalotofbooksandeventeachourselvesforeignlanguages.Wealsoenjoymusic,watchballmatchesonthenetandp
8、laycomputergames.Withthehelpofthenet,wecandoshoppingevenwithoutleavingourhomes.TheInternetisplayingamoreandmoreimportantpartinourdailylife.1.What’sthemainideaofthepassage?A.KeepawayfromtheInternet.B.Surfthenet.C.TheInternetisplayinganim
