24秋-25春同步授课课件英语鲁教版九年级全一册 Unit8 Section A 3a-3b

We’retryingtosavetheearth!Unit8SectionA3a-3bWhatanimalsarementionedinthevideo?情境导入Lead-inSHARK情境导入Lead-inTalkaboutwhatyouknowaboutsharks.Theyareatthetopofthefoodchainintheocean’secosystem.Inmovies,theyareoftenseenascruelkillers.SHARKDoyouthinksharksareendangered?Why?情境导入Lead-in单击此处添加标题文本内容SavethesharkWhatcanweknowfromthetitle

andthepicture?Thesharkmaybe__________

andweneedtosave

it.

Thepassageisaboutthe______.shark新课探究While-readingendangeredFastreadingMatcheachparagraphwithitsmainidea.SharksareendangeredHelpsavethesharks新课探究情境导入课堂小结SharkfinsoupFastreadingMatcheachparagraphwithitsmainidea.SharksareendangeredHelpsavethesharksSharkfinsoup新课探究情境导入课堂小结FastreadingMatcheachparagraphwithitsmainidea.HelpsavethesharksSharkfinsoupSharksareendangered新课探究情境导入课堂小结FastreadingMatcheachparagraphwithitsmainidea.SharksareendangeredSharkfinsoupHelpsavethesharks新课探究情境导入课堂小结ReadPara1andanswerthefollowingquestions.Whatdoesitmeanwhenpeopleenjoyabowlofsharkfinsoup?SavetheSharks!Manyhaveheardofsharkfinsoup.

Butdoyourealizethatyou’rekillingawholesharkeachtimeyouenjoyabowlof

sharkfinsoup?Theyarekillingawholeshark.Carefulreading新课探究情境导入课堂小结新课探究情境导入课堂小结ReadPara2andanswerthefollowingquestions.1.Whatdothenumbers“70million”and“90percent”mean?2.

Whatcausessharksindanger?3.Whatdidthewriterthinkofit?70millionsharksarecaughtandtraded.Thenumberofsharkshavefallenbyover90percent.Sharksareendangerednow.Why?First,people___________sharks.Next,people_______________theirfins.Then,people_________thefins_________thesharkfinsoup.Finally,people_______them_______________theocean.2.

Whatcausessharksindanger?新课探究情境导入课堂小结catchcutoffthrowbackintocookinto3.Whatdidthewriterthinkofit?Thisisnotonlycruel,butalsoharmfultotheenvironment.causes:People’sbehaviorofcathingsharksThisisnotonlycruel,butalsoharmfultotheenvironment.Whyissharkfinningconsideredcruel?Whyissharkfinningharmfultotheenvironment?Itcausessharkstodieaslowandpainfuldeath.Sharksareatthetopofthefoodchainintheocean’secosystem.Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.新课探究情境导入课堂小结HarmsofkillingsharksIfsharknumbersdroptoolow,howdoesitbringdangertoalloceanlife?Ifsharknumbersdroptoolow,howdoesitbringdangertoalloceanlife?Whatifsharksdisappeared?Whatifsharksdisappeared?Tipsalgae海藻sunlightoxygen氧气illfishesYousee,sharkssurvivebyfeedingonsmallerfishesthatfeedonthesmallestfish.Andalotofthesesmallestfishlovetoeatalgaesailingontopoftheocean.Soifsharksdisappearoutofthisfoodchain,thenthepopulationofsmallerfishwillgrowrapidlywhichwillthenfeedonthealgae-eatingfishestoapointtheymightgoextincttoo.Then,withnoonetocleanupthealgae,itwillflourishandmightevencovertheoceanobstructingthesunlighttoenterthewater.Andasdirectsunlightishowcoralsgettheiroxygen,withoutit,theywon’tbeabletosurvive,leadingtolossofhabitatandeventuallyresultinginthemassextinctionofmanymarinespecies.Anotherwaysharkshelptheaquaticsystemisbyfeedingontheweakorillmembersofmarinelife.Yes,that’sbecauseiftheseweakandillmemberscontinuetothrive,itwillweakenthelargerpopulationbypotentiallyspreadingillnesstotheothermarineanimals.Plus,whentheseweakermembersofthespeciesreproduce,itweakensthegeneticmakeupofthenewgeneration,puttingthematriskofextinction.Environmentalprotectiongroupsaroundtheworld,suchasWildAidandtheWWF,areteachingthepublicabout“finning”.Theyhaveevenaskedgovernmentstodeveloplawstostopthesaleofsharkfins.Sofar,noscientificstudieshaveshownthatsharkfinsaregoodforhealth,sowhyeatthem?Helpsavethesharks!“割鳍”行动ReadPara3andfillinthechart.新课探究情境导入课堂小结Helpsavethesharks!WildAidandtheWWFteachthepublicabout“finning”governmentsdeveloplawstostopthesaleofsharkfinspublicdon'teatsharkfinhelpsavethesharksdeveloplawstostopthesaleofsharkfinsdon'teatsharkfinhelpsavethesharksteachthepublicabout“finning”CarefulReadingReadPara.3andanswerthequestions.1.Whatdoestheterm“finning”refertointhiscontext?Issharkfinreallygoodforhealth?No,sofar,noscientificstudieshaveshownthatsharkfinsaregoodforhealth.新课探究情境导入课堂小结新课探究情境导入课堂小结hearof;

killawholeshark;abowlofsharkfinsoupcatch;cutoff;throw…backintonolongerswim;slowlydiefoodchain;ocean’secosystemdanger;alloceanlifearound70millions(arecaughtandtraded;industry)over90percent(kindsofsharks;havefallenby;20to30years)developlawsteachthepublicabout“finning”don'teat…;helpsave…SharkfinsoupHelpsavethesharksgovernmentsWildAid;the

WWFpublicSharksareendangeredcausesharmsfactsRetellingFillintheblankswiththewordsinthebox.3bManypeopledonotrealizetheyarekillingawholeshark______theyenjoyabowlofsharkfinsoup.2.Sharksareatthetopofthefoodchain,____iftheirnumbersdrop,theocean’secosystemwillbeindanger.whenso3.Manythinkthatsharksaretoostrongtobeendangered,_____theyarewrong.4._________therearenoscientificstudiestosupportthis,alotofpeoplebelievethatsharkfinsaregoodforhealth.5.Sharksmaydisappearoneday___wedonotdosomethingtostopthesaleofsharkfins.butAlthoughif新课探究情境导入课堂小结Discussandfinishthemindmap.Asformiddleschoolstudents,whatcanwedotosavethesharks?Saveme,please!

askthegovernmenttodeveloplawsstopthesaleofsharkfinsstopeatingthem

refusetodrinksharkfinsoup

writetothegovernmenttoclosethefactorieswheresharkfinsareprocessedmakesomevideostospreadtheimportanceofsavingsharks新课探究Post-reading单击此处添加标题文本内容新课探究情境导入课堂小结Exceptsharks,therearealsomanyotherwildanimalsareingreatdanger,whatcanwedotopr