英语人教版九年级全册unit 13 secyion A 3a-3b.ppt

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1、SectionA23a-3bUnit13We'retryingtosavetheearth!Theearthisbadlypolluted.Whatshouldwedotosavetheearth?WarmingupLet’stakeaction(采取行动)Turnoffthelightswhenyouleavearoom.Recyclebooksandpaper.Takebusesinsteadofdrivingcars.Therearesomeanimalsareendangered.Weshoulddosomethingtoprotecttheanimalsandtheenvironme

2、nt!Savetheearth!Savetheanimals!Thezoosprovidehomesformanyendangeredanimals.1.Haveyoueverseenashark（鲨鱼）?2.Whatdoyouknowaboutsharks?Discusswithyourpartner:Sharksareendangered,readthepassageandjudgethesentences.(√or×)Readthefirstparagraph1.Shark’sfin（鱼鳍）soupisfamousandexpensiveallaroundtheworld.2.Wehav

3、etokillawholesharktogetabowlofshark’sfinsoup.×√Readthesecondparagraph1.Peoplecutoffsharks’finsandthrowthesharksbackintotheocean.2.Sharksareinthebottomofthefoodchainintheocean’secosystem.√×n.生态系统食物链Readthethirdparagraph1.WildAidandtheWWFareenvironmentalprotectiongroupsinChina.2.Shark’sfinsaregoodforh

4、ealth.××southernChina70millionover90percentWildAidandtheWWF3aReadthepassageaboutsharksandcompletethefactsheetbelow.3bReadthepassageagainandfillintheblankswiththewordsinthebox.Manypeopledonotrealizetheyarekillingawholeshark______theyenjoyabowlofsharkfinsoup.2.Sharksareatthetopofthefoodchain,____ifthe

5、irnumbersdrop,theocean’secosystemwillbeindanger.whenso3.Manythinkthatsharksaretoostrongtobeendangered,_____theyarewrong.4._________therearenoscientificstudiestosupportthis,alotofpeoplebelievethatsharkfinsaregoodforhealth.5.Sharksmaydisappearoneday___wedonotdosomethingtostopthesaleofsharkfins.butAlth

6、oughifadj.科学上的，科学的nolonger和not…anylonger侧重时间。e.g.Henolongerliveshere.=Hedoesn’tlivehereanylonger.他不在这儿居住了。(一个时间以前他住在这儿，过了这个时间，他就离开了。)not…anymore侧重程度和数量e.g.Youcandrinknomore.=Youcan’tdrinkanymore.你不能再喝了。(喝酒的量到了一定程度，不能再继续下去了。)1.Thismethodisnotonlycruel,butalsoharmfultotheenvironment.这种方法不但残忍而且对环境有害。no

7、tonly…butalso…用于连接两个表示并列关系的成分，着重强调后者，其意为“不仅……而且……”;其中的also有时可以省略。Languagepointse.g.Shenotonlyplayswell,butalsowritesmusic.她不但很会演奏，而且还会作曲。Notonlymenbutalsowomenwerechosen.不仅仅是男的，女的也有被选中的。若连接两个成分作主语，其谓语