《关键词寻找》PPT课件

《《关键词寻找》PPT课件》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、关键词的寻找何谓关键词？关键词即能够帮助你在文章中找到答案的词。一般来说，可分为广义关键词和狭义关键词。广义限定词：决定答案位置和性质的词。ScientistsdonotknowforsurewhytheairandsurfaceofoceantemperaturesarerisingbecauseA    thereistoomuchvariabilityB    thereisnotenoughvariabilityC    theyhavenotbeenrecordingthesetemperaturesforenoughtimeD    th

2、echangeshaveonlybeennoticedfor100yearsWhatwasthecostoftherevisedbudgetfortheSydneybid?狭义限定词人名、地名、时间、数字、与生词。关键词的原文重现原词重现同义重现原文：Itisacknowledgedformanyyearsthatanincreasingnumberofanimalsareboundtobecomeextinct,itisonlyrecentlythattheproblemhasbeenaddressedbypoliticians.题干：Wehave

3、knownforalongtimethatmorespeciesofanimalswilldisappear.关系重现Thefirstofthenewfreedomsisindesign.Powerfulcomputer-aideddesignsystemcanreplacewithaclickofcomputermousehoursoflaboriousworkdoneonthousandsofdrawingboards.Sonewproducts,nomatterhowcomplicated,canbedevelopedmuchfaster.Fo

4、rthefirsttime,Boeingwillnothavetobuildagiantreplicaofitsnewairliner,the777,tomakesureallthebitsfittogether.ItsCADsystemwilltakecareofthat.WhydidBoeingnotneedareplicaofthe777?A    ItcanusecomputerstocheckthedesignB    ItalreadyhasenoughexperiencewithplanesC    Itwillonlyneedtoup

5、datethereplicaofthepreviousmodelD   Itcanmakesureallbitsfittogether.句子间逻辑关系的推理理解句子间的逻辑结构可以从两个方面帮助我们：语义推断Somecorporaincludeawiderangeoflanguagewhileothersareusedtofocusonaparticularlinguisticfeature.定位原文：First,itlackedthenecessarytechnicalvocabulary.Second,itlackedthegrammatical

6、resourcesrequiredtorepresenttheworld…题干：InBritain,moreover,scientistsworriedthatEnglishhadneitherthetechnicalvocabularynorthegrammaticalresourcestoexpresstheirideas.