英语人教版九年级全册unit 13 Section A3a-3b.ppt

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1、Unit13We’retryingtosavetheearth.SectionA3a-3bRevisionpollutionairpollutionwaterpollutionlandpollutionnoisepollutionwastepollutionclosedownthefactories;helptocleanuptheriver;takethebusorsubway;rideabike;bringabagtogoshopping;throwrubbishinthebins;don’tusewoodenchopsticksorplast

2、icforksdon’tuseplasticbags;…solutionsWhatdoyouknowaboutsharks?thefoodchain食物链atthetopof在……顶端ocean’secosystem海洋生态系统Althoughsharksareatthetopofthefoodchain,people______theirfinsandeat______________.cutoff(把……砍下）sharkfinsoup鱼翅汤Sotheirnumbersdropverylow，andbecome_______________.en

3、dangered(adj.濒临灭绝的）Solet’shelpsavethesharks!Readthetitle,thefirstandlastsentencesineachparagraphsandmatchthemainideas.Talkaboutsharkfinsoup.Sharksareendangerednow.Appeal(呼吁）topeopleagainsteatingsharkfins.Para.3Para.1Para.2WheresharkfinsoupispopularNumberofsharkscaughtandtraded

4、everyyearHowgovernmentcanhelpTwoenvironmentalgroupswhichareagainst“finning”insouthernChinaaround70milliontodeveloplawstostopthesaleofsharkfinsWildAidandtheWWF3aReadthepassageaboutsharksandcompletethefactsheetbelow.ReadParagraph2carefullyandanswerthefollowingquestions1、Ifashark

5、doesn’thaveafin,whatwillhappen?2、Ifsharks’numbersdroptoolow,whatwillhappen?3、Whyaresharksendangerednow?Ifasharkdoesn’thaveafin,whatwillhappen?Asharkcannolongerswimandslowlydies.Ifsharks’numbersdroptoolow,whatwillhappen?Itwillbringdangertoalloceanlife.Whyaresharksendangerednow?

6、Around70millionsharksarecaughtandtradedinthisindustryeveryyear.Thenumbersofsomekindsofsharkshavefallenbyover90percentinthelast20to30years.1.Manypeopledonotrealizetheyarekillingawholeshark_____theyenjoyabowlofshark’sfinsoup.2.Sharksareatthetopofthefoodchain,______iftheirnumbers

7、drop,theocean’secosystemwillbeindanger.Readthepassageagainandfillintheblankswiththewordsinthebox.sowhen3bsoalthoughifbutwhenManythinkthatsharksaretoostrongtobeendangered,_________theyarewrong._________therearenoscientificstudiestosupportthis,alotofpeoplebelievethatsharkfinsare

8、goodforhealth.5.Sharksmaydisappearoneday______wedonotdosometh