高中英语 unit3 protecting ourselves-grammar and usage精品教案 牛津译林版选修10

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1、Unit3ProtectingourselvesGrammarandusageStep1GeneralintroductionThegrammaritemsinthisunitfocusononeaspectofthestructureofatext—thedevelopmentofatext.Youwilllearnhowatextshouldbewrittentoallowreaderstomovefromoneideatothenexteasily.Youwillgettoknowthattherearefourfeaturesthatcanhelpdevelopatext

2、logically.Youareexpectedtoapplywhatyouhavelearnttopracticebyfinishinganexercise.Step2Explanation—thedevelopmentofatext1.Turnyourbookstopages34and35andhavealook:T:Howmanyparagraphsarethereinthetext?(Therearetenparagraphs.)T:Whatisthetitleofthetext?(Thetitleis‘Aidstoday’.)T:Canwelearnwhatthetex

3、tisaboutfromthetitle?(Yes.WelearnthatthetextisaboutthedeadlydiseaseofAidsatthepresenttime.)T:Ifyouareaskedtodividethewholetextintoseveralparts,howwillyoudivideit?(Wecandivideitintothreeparts.Thefirstpartistheintroductioninthefirstparagraph.Thesecondpartisthemainbodyandincludesthenexteightpara

4、graphs.Theconclusionisthelastparagraph,andisthelastpart.)T:Whatisthemainideaofthefirstpart?(ItgivesusanexampletoshowushowseriousthesituationofAidsisinAfrica.)T:Whatisthesecondpartabout?(IttellsussomedetailedinformationabutAids.Forexample,whatcausesAids,thewayspeoplegetinfectedwithaids,howseri

5、ousthesituationisaroundtheworldandwhattheUNandtheChinesegovernmenthavebeendoingtodealwiththissituation.)T:Whatisthelastpartabout?(ItrefersagaintotheexamplementionedinthefirstparagraphandpointsoutthekeytostoppingAidsinthefuture.)T:Nowwecanseehowatextisdeveloped.Weknowthatatextusuallyincludesse

6、veralparts.Wecallthesepartsthetitle,thebeginningparagraph,thebodyparagraphsandtheconcludingparagraph.Now,let’sgoovertheGrammarandUsagesectiontolearnhowtodevelopatextlogically.2.ReadtheguidelinesandPart1.Canyoualsothinkofsometitlesofsomeotherarticlesthatarenottoolongandareclearandsimple?3.Goov

7、erthethreepointsofPart2andseewhatshouldbeincludedinthebeginningparagraph.4.GooverPart3.Thispartwilltellyouthateachbodyparagraphusuallycontainsatopicsentencesandaconcludingsentencetotheparagraph.Trytofindwhatthetopicsentenceshouldbelikeandwher