SectionA24 英语教学课件

Unit13Wearetryingtosavetheearth!SectionA3a-3b九年级(全)sharkfincruelharmfulbeharmfultoatthetopofchainthefoodchainecosystemindustrylawscientificn.鲨鱼n.（鱼）鳍adj.

残酷的；残忍的adj.

有害的对有害的在顶部或顶端n.链子；链条食物链n.生态系统n.工业；行业n.法律；法规adj.科学上的；科学的WordsReviewObjectivesTolearnsomekeywordsandusefulexpressionsTolearnsomethingaboutendangeredanimals--sharks.我国是濒危动物分布大国。据不完全统计，仅列入《濒危野生动植物物种国际贸易公约》附录的原产于中国的濒危动物有120多种(指原产地在中国的物种)，列入《国家重点保护野生动物名录》的有257种，列入《中国濒危动物红皮书》的鸟类、两栖爬行类和鱼类有400种，列入各省、我国有多少种濒危动物?Addtionalmaterials自治区、直辖市重点保护野生动物名录的还有成百上千种。随着经济的持续快速发展和生态环境的日益恶化，我国的濒危动物种类还会增加。改革开放以来，我国进口了不少动物，如湾鳄、暹罗鳄、食蟹猴、黑猩猩、非洲象等。至于我国究竟有多少种濒危动物很难说清。但可以肯定，如果包括无脊椎动物的话，至少有1000种。Animalsareourfriends.Welive(居住)inthesame(相同)smallworld(世界).Toloveanimalsistoloveourselves(我们自己).

Readthepassageaboutsharks

andcompletethefactsheetbelow.3aManyhaveheardofsharkfinsoup.ThisfamousandexpensivedishisespeciallypopularinsouthernChina.Butdoyourealizethatyou’rekillingawholesharkeachtimeyouenjoyabowlofsharkfinsoup?Whenpeoplecatchsharks,theycutofftheirfinsandthrowthesharkbackintotheocean.Thisisnotonlycruel,butalsoharmfultotheenvironment.

Withoutafin,asharkcannolongerswim

andslowlydies.Sharksareatthetopofthefoodchainintheocean’s

ecosystem.If

theirnumbersdroptoolow,itwillbringdangertoalloceanlife.Manybelieve

thatsharkscanneverbeendangeredbecausetheyarethestrongestintheirfood

chain.Butinfact,around70millionsharksarecaughtandtradedinthisindustry

everyyear.Thenumbersofsomekindsofsharkshavefallenbyover90percentin

thelast20to30years.

Environmentalprotectiongroupsaroundtheworld,suchasWildAidandthe

WWF,areteachingthepublicabout“finning”.Theyhaveevenaskedgovernments

to

developlawstostopthesaleofsharkfins.Sofar,noscientificstudieshave

shownthatsharkfinsaregoodforhealth,sowhyeatthem?Helpsavethesharks!WheresharkfinsoupispopularNumberofsharkscaughtandtradedeveryyearHowmuchthenumbersofsomekindsofsharkshavefalleninthelast20-30yearsTwoenvironmentalgroupsagainst"finning"70millionOver90percentWildAidandtheWWFSouthernChinaLet'sdothistoreviewthetext!!!Somepeopleliketoeatsharkfinsoup,especiallyin_______China.Butgettingtheshark'sfinisvery_____.Whenpeoplecatchsharks,they________theirfinsandthrowthesharksintotheocean.Thesharkslowlydiesbecauseitcan't_____withoutthefin.Anditisalso______toenvironment.Sharksareatthe____ofthefoodchain.Ifthenumberofsharksdropstoolow,itwillbreakthebalanceofnuture.Pleasesaynotoeatingthesharkfinsoup,andtakeactiontosavethesharks!southerncruelcutoff

swimharmfultopLet’slearnsomelanguagepointsharmful

形容词，意为“有害的”。常构成短语beharmfulto“对……有害的”。Stayingupoftenisharmfultoyourhealth.经常熬夜对你的健康有害。【拓展】harm名词，意为“害处”。常用于构成短语do

harmto“对……有害”，相当于beharmfulto.Toomuchsmokingdoesharmtohishealth.=Toomuchsmokingisharmfultohishealth.吸烟过多对他的健康有害。改为同义句。Readinginthesundoesharmtooureyes.Readinginthesun_______________oureyes.isharmfulto1.Manypeopledonotrealizetheyarekillinga

wholeshark_____theyenjoyabowlofshark

finsoup.2.Sharksareatthetopofthefoodchain,______

iftheirnumbers

drop,theocean’secosystem

willbeindanger.Readthepassageagainandfillintheblankswiththewordsinthebox.

sowhen3bsoalthoughifbutwhenManythinkthatsharksaretoostrongtobeendangered,_________theyarewrong._________therearenoscientificstudiestosupportthis,alotofpeoplebelievethatsharkfinsaregoodforhealth.5.Sharksmaydisappearoneday______wedonotdosomethingtostopthesaleofsharkfins.

butAlthoughif练习题

用方框中词的适当形式完成下面的句子。(1)Ithinkit’s____tomakesuchayoungboyworkallday.(2)Thepoorfishermancan’t_____hischildren’seducation.(3)Ithinkthegovernmentmustdevelop_____toprotectenvironment.(4)Eatingtoomuchjunkfoodis_______toyourhealth.(5)Hecanusedifferent_______toworkouttheproblem.method,cruel,harmful,afford,lawcruelaffordlawsharmfulmethodsII.单项选择。1.—Areyougoingto_____anyoftheevents?—Yes.Maybelongjumpandhighjump.

A.takepartin B.join C.attend D.joinin2.Ican’tafford____himanexpensivebirthdaypresent. A.tobuy B.buying C.forbuying D.buy3.—Rememberto____thelightswhenyouleavetheroom.—OK.Iwill. A.turnon B.turndown C.turnup D.turnoff4.Thegirlalwayshassomemoneyto___snacks. A.spend B.payfor C.take D.cost5.—Look!_____boysareplayingonthe

playground.—Yes._____themisabout200. A.Thenumberof;Anumberof B.Thenumberof;Thenumberof C.Anumberof;Thenumberof D.Anumberof;AnumberofIII.根据汉语提示完成句子。1.我们必