九年級(jí) 英語 下冊(cè)《Unit 13 Section A (3a-3b)》課件

英語教學(xué)課件（RJ）Goforit!九年級(jí)（下）SectionA(3a-3c)Unit13We’retryingtosavetheearth!LearningGoalsKeywords&phrases:

shark,fin,cruel,harmful,beharmfulto,atthetopof,chain,thefoodchain,ecosystem,industry,law,scientific.Keysentences:

1.Butdoyourealizethatyouarekillingawholesharkeachtimeyouenjoyabowlofsharkfinsoup?2.Butinfact,around70millionsharksarecaughtandtradedinthisindustryeveryyear.Tohavetheawarenessofprotectingsharksandrespectingnature.Warming-upSouthChinatiger華南虎CrestedIbis朱鹮Let’slookatpicturesofendangeredanimalsinourcountry.adj.瀕危的；瀕臨滅絕的Panda大熊貓BrownEared-pheasant褐馬雞GoldenMonkey金絲猴Chiru藏羚羊Doyouknowanythingaboutthem?FreetalkWhatdoyouknowaboutsharks?Doyouthinksharksareendangered?Why?Whatdoyouthinkmighthavecausedafallinthenumberofsharks?Let'swatchavideo!Pre-readingshark/?ɑ:(r)k/n.

鯊魚fins/finz/n.（魚）鰭Let'sreadnewwords&expressionschain[t?e?n]n.鏈子；鏈條cruel[kru:?l]

adj.殘酷的；殘忍的newwords&expressionsLet'sreadnewwords&expressionsLet'sreadthefoodchain[t?e?n]

食物鏈atthetopof

在……頂部或頂端atthetopofthefoodchainecosystem[?i:k???s?st?m]

n.

生態(tài)系統(tǒng)WildAid[?wa?lde?d]

野生救援協(xié)會(huì)（美國）WWF(WorldWideFundforNature)

世界自然基金會(huì)newwords&expressionsLet'sreadharmful[?hɑ:(r)mfl]adj.有害的beharmfulto

對(duì)……有害e.g.Smokingisharmfultoourhealth.newwords&expressionsLet'sreadWhat’shappeningtosharks?thesharkiscaught(catch)bypeople.First,thefinsarecut(cut)offbypeople.Next,切除thesharkfinsarecooked(cook)intothesharkfinsoupbypeople.魚翅羹Then,thesharkwithoutfinsisthrown

(throw)backintotheoceanbypeople.Finally,扔回到…...Whatwillhappentotheshark?Whatshouldwedo?While-readingSavetheSharks!Manyhaveheardof

sharkfinsoup.ThisfamousandexpensivedishisespeciallypopularinsouthernChina.Butdoyourealizethatyou’rekillingawholesharkeachtimeyouenjoyabowlofsharkfinsoup?聽說，相當(dāng)于hearaboutWhenpeoplecatchsharks,theycutoff

theirfinsandthrowthesharksbackintotheocean.Thisisnotonlycruel,butalsoharmful

totheenvironment.Withoutafin,asharkcannolongerswimandslowlydies.Sharksareatthetopof

thefoodchainintheocean’secosystem.Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.Manybelievethatsharkscanneverbeendangeredbecausetheyarethe切掉；切斷adj.殘酷的；殘忍的adj.

有害的beharmfulto對(duì)……有害不再在……頂部或頂端n.生態(tài)系統(tǒng)strongestintheirfoodchain.Butinfact,around70millionsharksarecaughtandtradedinthisindustryeveryyear.Thenumbersofsomekindsofsharkshavefallenbyover90percentinthelast20to30years.n.工業(yè)；行業(yè)在過去的20到30年里，是現(xiàn)在完成時(shí)的標(biāo)志性時(shí)間狀語之一Environmentalprotectiongroupsaroundtheworld,suchasWildAidandtheWWF,areteachingthepublicabout“finning”.Theyhaveevenaskedgovernmentstodeveloplawstostopthesaleofsharkfins.Sofar,noscientificstudieshaveshownthatsharkfinsaregoodforhealth,sowhyeatthem?Helpsavethesharks!n.法律；法規(guī)adj.科學(xué)上的；科學(xué)的到目前為止；迄今為止是現(xiàn)在完成時(shí)的標(biāo)志性時(shí)間狀語之一Readthepassagein3aquicklyandanswerthequestions.Sharksareatthetopofthefoodchainintheocean’secosystem.Yes,Ithinksharksareendangered.Becausewhenpeoplecatchsharks,theycutofftheirfinsandthrowthesharksbackintotheocean.Withoutafin,asharkcannolongerswimandslowlydies.Doyouthinksharksareendangered?Why?Whatdoyouknowaboutsharks?Peoplecatchsharksandcutofftheirfinsandthrowthembackintotheocean.Withoutafin,asharkdies.Whatdoyouthinkmighthavecausedafallinthenumberofsharks?3aReadthepassageaboutsharksandcompletethefactsheetbelow.WheresharkfinsoupispopularNumberofsharkscaughtandtradedeveryyearHowgovernmentscanhelpTwoenvironmentalgroupsagainst“finning”InsouthernChina.Around70million.Todeveloplawstostopthesaleofsharkfins.WildAidandtheWWF.3bReadthepassageagainandfillintheblankswiththewordsinthebox.1.Manypeopledonotrealizetheyarekillingawholeshark______theyenjoyabowlofsharkfinsoup.2.Sharksareatthetopofthefoodchain,________iftheirnumbersdrop,theocean’secosystemwillbeindanger.3.Manythinkthatsharksaretoostrongtobeendangered,_______theyarewrong.whensobutsoalthough

ifbutwhen4.________therearenoscientificstudiestosupportthis,alotofpeoplebelievethatsharkfinsaregoodforhealth.5.Sharksmaydisappearoneday_______wedonotdosomethingtostopthesaleofsharkfins.AlthoughifPost-readingSomepeopleliketoeatsharkfinsoup,especiallyin_________China.Butgettingthesharkfinisvery_____.Whenpeoplecatchthesharks,they________theirfinsandthrowthesharksintotheocean.Thesharksslowlydiesbecausetheycan’t_____withoutfins.Anditisalso________totheenvironment.Sharksareatthe___ofthefoodchain.Ifthenumberofsharksdropstoolow,itwillbreakthebalanceofthenature.Pleasesaynotoeatingsharkfinsoup,andtakeactiontosavethesharks!Retellthepassage.southerncruelcutoffswimharmfultop

Savethesharks!Savethewildanimals!

NotradeNomurderLanguagePoints1.Thenumbersofsomekindsofsharkshavefallenbyover90percentinthelast20to30years.(教材P99

3a)“thenumbersof...”是“thenumberof…”的復(fù)數(shù)形式。Thenumbersofdifferentkindsofflowersaregrowingquickly.【易混辨析】thenumberof...與anumberof...例詞詞義用法thenumberof...……的數(shù)量“thenumberof+可數(shù)名詞復(fù)數(shù)”作主語時(shí)，謂語動(dòng)詞用單數(shù)形式。anumberof...一些；若干“anumberof+可數(shù)名詞復(fù)數(shù)”作主語時(shí)，謂語動(dòng)詞用復(fù)數(shù)形式。Anumberofmeasureshavebeentakentoprotectwildanimalsbecausethenumberofthemhasbecomesmallerandsmaller.2.Thenumbersofsomekindsofsharkshavefallenbyover90percentinthelast20to30years.(教材P99

3a)Lastyear,thepriceofthiskindofcarwas100,000yuan.Thisyearitfallsto80,000yuan.Itfallsby20percent.“fallby”意為“下降了”，by表示變化的幅度。fallto意為“下降到”。一、單項(xiàng)選擇Exercises1.—WhynotaskBobtojoinusinthetriptothezootomorrow?—Everyoneinourgrouplovesanimals,buthealwaysseems______.anxious

B.personal

C.cruel

D.careless2.

Anumberofvisitors_______visitingtheWestLakeandthenumberofthevisitors_____increasing.are;is

B.is;are

C.are;areCA3.

Don’tplaygamesonthecomputerallday.It’s_______toyoureyes.A.harmful B.thankful