人教英语九年级第十三单元第三课时.pptx

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1、Unit13　We’retryingtosavetheearth!SectionAGrammarFocusBY残荷居士Unit13　We’retryingtosavetheearth!SectionA3a—4cBY残荷居士Haveyoueverseenashark?Whathashappenedtosharks?Thegeneralideaofthearticleisabout.A.waterpollutionB.environmentalprotectiongroupsC.thesharkReadforthegeneralideaof3a.CWheresharkfins

2、oupispopularNumberofsharkscaughtandtradedeveryyearHowmuchthenumbersofsomekindsofsharkshavefalleninthelast20to30yearsTwoenvironmentalgroupsagainst“finning”southernChina70millionover90percentWildAidandtheWWFReadthepassageaboutsharksandcompletethefactsheetbelow.Readthepassageagainandfillinth

3、eblankswiththewordsinthebox.soalthoughifbutwhen1.Manypeopledonotrealizetheyarekillingawholeshark______theyenjoyabowlofsharkfinsoup.2.Sharksareatthetopofthefoodchain,____iftheirnumbersdrop,theocean’secosystemwillbeindanger.3.Manythinkthatsharksaretoostrongtobeendangered,_____theyarewrong.4

4、._________therearenoscientificstudiestosupportthis,alotofpeoplebelievethatsharkfinsaregoodforhealth.5.Sharksmaydisappearoneday___wedonotdosomethingtostopthesaleofsharkfins.whensobutAlthoughif☆教材解读☆1.Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.if引导的是条件状语从句,谓语动词使用一般现在时表示将来,主句使用

5、一般将来时。Ifitdoesn’traintomorrow,wewillgofishing.如果明天不下雨,我们就去钓鱼。2.Sofar,noscientificstudieshaveshownthatsharkfinsaregoodforhealth,sowhyeatthem?◆sofar的意思是“到目前为止”,主句时态使用现在完成时。Sofar,wehavelearnedEnglishforsixyears.到目前为止,我们已经学习英语六年了。◆句中that引导的是宾语从句,作动词shown的宾语。begoodfor的意思是“对……有好处”。Studyshowstha

6、tdoingexerciseeverydayisgoodforourhealth.研究显示,每天锻炼对我们的健康有好处。Retellthestoryaccordingtothefollowingmindmap.We’retryingtosavetheearth.PresentprogressiveTheriverusedtobesoclean.usedtoTheairisbadlypolluted.PassivevoiceNoscientificstudieshaveshownthatsharkfinsaregoodforhealth.PresentperfectWesh

7、ouldhelpsavethesharks.ModalverbsGrammarFocusFillintheblankswiththecorrectformsoftheverbs.Joe:_____youever______(take)partinanenvironmentalproject?Eric:Yes,Ihave.I______(help)withaClean-UpDaylastyear.Itwas__________(consider)thebiggestclean-upprojectthiscity____ever_