选修六unit4Learning about language.ppt

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1、Unit4GlobalwarmingLearningaboutlanguage高二人教新课标版选修六Discoveringusefulwordsandexpressions1Findthewordsinthetextthathavethesetwomeanings.Takenoticeofthemeaningusedinthereadingpassage,writethewordsandmarktheirusageinthechart.PossiblemeaningsWordWhichused1.n.ageneraltendencyinthe

2、wayasituationischanging2.v.tostartdoingsomethingthateveryonecopiestrend1PossiblemeaningsWordWhichused1.v.tomakesomething(especiallysomethingbad)increase2.n.asubstancethatcanbeburnedtomakeheatorenergyfuel2PossiblemeaningsWordWhichused1.n.thephysicalormentalconditionofsomeone

3、2.v.toformallysayorwritesomeinformationoranopinion1.v.tousetime,energy,goods,etc2.n.(formal)toeatordrinksomethingstate2consume1PossiblemeaningsWordWhichused1.v.tolookquicklyatsomeoneorsomething2.v.toreadsomethingveryquicklyglance21.CharlesKeelingcollected______onthecarbondi

4、oxidecontentintheatmosphereoveraforty-yearperiod.Hefoundthattheamountofcarbondioxide_______increasingduringthattime.datakepton2Completeeachsentencewithoneofnewwordsorphrases.2.Althoughweareburningcoalinhuge_________everyyear,wewon’t________ofitforcenturies.3.Iftheamountofgr

5、eenhousegasescontinuesto________,wecouldbefacingaglobal___________.quantitiesrunoutbuildupcatastrophe4.Manyscientistsbelievethatglobalwarminghas__________throughtheburningoffossilfuels.5.The_____________ofarisingsealevelwouldbewidespreadflooding.comeaboutconsequence6.Onthew

6、holethewarmingoftheearthisa____________thatcausesgreatconcern.7.The_______showstemperaturechangesduringthe20thcentury.8.Onehectareofforestcanabsorb23tonsofcarbondioxide____year.phenomenongraphper9.Thewashingmachineusestoomuchenergy,but_________webuyamoreeconomicalone,itwoul

7、dstillusetoomuchwater.10.Thecaraccidentonthemainroadyesterday___________onedriver’sdeath.evenifresultedinGrammarIt的用法及强调句型由it引导的强调句结构：Itis(was)+被强调部分+that(who)+句子其他部分注意:此结构强调的成分仅限于主语,宾语和状语。如：原句:Myfatherdidtheexperimentinthelabyesterdayevening．强调主语:Itwasmyfatherwho/thatdidth

8、eexperimentinthelabyesterdayevening．强调宾语:Itwastheexperimentthatmyfatherdidinthelab