unit13WearetryingtosavetheearthSectionA3a-3b第二课时市公

Unit13Wearetryingtosavetheearth.SectionA3a-3b1/42

Readthepassageaboutsharks

andcompletethefactsheetbelow.3a2/42Manyhaveheardofshark’sfinsoup.ThisfamousandexpensivedishisespeciallypopularinsouthernChina.Butdoyourealizethatyou’rekillingawholesharkeachtimeyouenjoyabowlofshark’sfinsoup?Whenpeoplecatchsharks,theycutofftheirfinsandthrowthesharkbackintotheocean.3/42

Thisisnotonlycruel,butalsoharmfultothe

environment.Withoutafin,asharkcannolongerswim

andslowlydies.Sharksareatthetopofthefoodchainintheocean’s

ecosystem.If

theirnumbersdroptoolow,itwillbringdangertoalloceanlife.Manybelieve

thatsharkscanneverbeendangeredbecausetheyarethestrongestintheirfood

chain.4/42Butinfact,around70millionsharksarecaughtandtradedinthisindustry

everyyear.Thenumbersofsomekindsofsharkshavefallenbyover90percentin

thelast20to30years.5/42

Environmentalprotectiongroupsaroundtheworld,suchasWildAidandthe

WWF,areteachingthepublicabout“finning”.

Theyhaveevenaskedgovernments

to

developlawstostopthesaleofshark’sfins.Sofar,noscientificstudieshave

shownthatshark’sfinsaregoodforhealth,sowhyeatthem?Helpsavethesharks!6/42WheresharkfinsoupispopularNumberofsharkscaughtandtradedeveryyearhowmuchthenumbersofsomekindsofsharkshavefalleninthelast20-30yearsTwoenvironmentalgroupsagainst"finning"southernChina70millionover90percentWildAidandtheWWF7/42Let'sdothistoreviewthetext!!!Somepeopleliketoeatshark'sfinsoup,especiallyin_______China.Butgettingtheshark'sfinisvery_____.Whenpeoplecatchsharks,they________theirfinsandthrowthesharksintotheocean.Thesharkslowlydiesbecauseitcan't_____withoutthefin.Anditisalso______toenvironment.Sharksareatthe____ofthefoodchain.Ifthenumberofsharksdropstoolow,itwillbreakthebalanceofnuture.Pleasesaynotoeatingthesharkfinsoup,andtakeactiontosavethesharks!southerncruelcutoff

swimharmfultop8/42Let’slearnsomelanguagepoints9/42harmful

形容词，意为“有害”。常组成短语beharmfulto“对……有害”。Stayingupoftenisharmfultoyourhealth.经常熬夜对你健康有害。【拓展】harm名词，意为“坏处”。惯用组成短语do

harmto“对……有害”，相当于beharmfulto.Toomuchsmokingdoesharmtohishealth.=Toomuchsmokingisharmfultohishealth.吸烟过多对他健康有害。10/42改为同义句。Readinginthesundoesharmtooureyes.Readinginthesun_______________oureyes.isharmfulto11/42辨析：join,joinin和takepartintojoin加入组织，团体，党派等，有作为其中一个组员含义;后面也能够加表示人名词，表示和某人一起参加某活动joinin加入一个详细活动。takeaprtin指参加会议或群众性活动等，着重说明句子主语参加该项活动并在活动中发挥作用。12/42Willyoujoinusinthediscussion?你参加我们讨论吗？

ShejoinedtheYoungPioneers.她加入了少先队。

Whydidn'tyoujoininthetalklastnight?

昨晚你为何没参加座谈？Didyoutakepartinthesportsmeet?你参加运动会了吗？13/421.—Haveyou_____aclub?—Yes,I’minaswimmingclubandIoften_____theswimmingtraining.

A.joined;takepartin

B.joined;join

C.takenpartin;join

D.takenpartin;joinin2.—We’regoingforapicnic.Wouldyoulike

to____us?—Whynot?Let’sgo!A.attend B.joinC.joinin D.takepartin14/42⑴afford是动词，意为“买得起,担负得起”，通常与can,could,beableto连用,多用于否定句中。Theycouldn’tafford$50foraticket.他们拿不出50美元买一张票。⑵afford后面常跟带to动词不定式。Wecan’taffordtogoabroadthissummer.

今年夏天我们没有足够钱出国。例句：MissTaylorneverwastesmoneyonanythingtooexpensive,eventhoughshecan_____to.Shehasdonatedmuchofthemoneyshesavedtocharities.

A.afford B.allow

C.remind

D.pay15/421.Manypeopledonotrealizetheyarekillinga

wholeshark_____theyenjoyabowlofshark’s

finsoup.2.Sharksareatthetopofthefoodchain,______iftheirnumbersdrop,theocean’secosystemwillbeindanger.Readthepassageagainandfillintheblankswiththewordsinthebox.

sowhen3bsoalthoughifbutwhen16/42Manythinkthatsharksaretoostrongtobeendangered,_________theyarewrong._________therearenoscientificstudiestosupportthis,alotofpeoplebelievethatsharkfinsaregoodforhealth.5.Sharksmaydisappearoneday______wedonotdosomethingtostopthesaleofsharkfins.

butAlthoughif17/42Languagepoints3aManyhaveheardofshark’sfinsoup.This

famousandexpensivedishisespecially

popularinsouthernChina.1)hear为及物动词，“听到”，表结果。e.g.Icanhearyouclearly.我能清楚听到你说话。2)hearofhearabout①hearabout和hearof“听他人说”常可交换，hearabout“听到…详细”听到内容更详细一些，hearof（指间接听到）听他人说起或提及e.g.Nooneinthetownhadheardofhim.e.g.Haveyouheardof/abouttheaccident?18/423)hearfrom普通后接sb.指“收到……来信”。e.g.HaveyouheardfromJim?你收到吉姆来信了吗?19/42Butdoyourealize

thatyou’rekillingawholesharkeachtime

youenjoyabowlofshark’sfinsoup?20/42Whenpeoplecatchsharks,theycutofftheirfinsandthrowthesharkbackintotheocean.21/42Thisisnotonlycruel,butalsoharmfultotheenvironment.&.harmful(adj)“有害，不利”惯用短语beharmfultosb/sth“对某人、某物有害”e.g.Theairpollutionisharmfultoourhealth?空气污染对我们健康有害e.g.Don’tyouthinksmokingisharmfultohealth?莫非你不认为吸烟有害健康吗？22/42Sharksareatthetopofthefoodchainintheocean’s

ecosystem.23/42If

theirnumbersdroptoolow,itwillbringdangertoalloceanlife.24/42Manybelieve

thatsharkscanneverbeendangeredbecausetheyarethestrongestintheirfood

chain.25/42Butinfact,around70millionsharksarecaughtandtradedinthisindustry

everyyear.&.70million“七千万”million数词“百万”使用方法与数词hundred“百”thousand“千”billion“十亿”1）与详细数字连用，用单数twohundred两百threemillion三百万2)当表示不确定泛指数目时，要用复数，且后接介词of如hundredsof“数以百计，成百上千”thousandsof“数发千计，成千上万”millionsof“数百万”26/42e.g.Therearehundredsofbooksonthedesk.桌子上有几百本书e.g.Thesunwasshining.Thousandsofpeoplewerelyingonthebeach.阳光灿烂，数以千计人躺在海滩上27/42&.industry(n)“工业”industrial(adj)“工业”

e.g.NewindustriesarespringingupinAsia.新工业正在亚洲兴起28/42Thenumbersofsomekindsofsharkshavefallenbyover90percentin

thelast20to30years.&.somekindsof固定短语，后跟名词“几个”e.g.Hehassomekindsoffishesathome.他家里养着几条鱼&.kind短语Kindof+形容词“有点…”相当于alittle/abit/alittlebit.e.g.I’mkindofhungry.我有点饿了2)manykindsof+名词“很各种…”，this/thatkindof+名词“这/那一个…”

e.g.Thiskindoffilmisnotpopular.这种电影不受欢迎29/423)allkindsof+名词“各种各样…”e.g.Shelikesallkindsofflowers.她喜欢各种各样花。4)differentkindsof+名词“不一样种类…”e.g.Therearedifferentkindsofbooksinthebookshop.这家书店里有各种不一样种类书籍5)bekindtosb“对某人友好”相当于befriendlytosbe.g.Wemustbekindtowildanimalsinordertoprotectthem.我们必须友好对待野生动物，这么才能保护它们。6)akindof“一个…”e.g.Anappleisakindoffruit.苹果是一个水果30/42

Environmentalprotectiongroupsaroundtheworld,suchasWildAidandthe

WWF,areteachingthepublicabout“finning”.

31/42Sofar,noscientificstudieshave

shownthatshark’sfinsaregoodforhealth,sowhyeatthem?Helpsavethesharks!32/42Twoenvironmentalgroupsagainst"finning"&.against(prep)“反对，对着，违反”后接动词－ing作宾语beagainst…“反对…”反义词组：befor…“支持…”e.g.Weareallagainsthisidea.我们都反对他想法e.g.Hespokeagainstthenewlaw.他讲话反对新法律e.g.I’magainstdoinganythingtillthepolicearrive.我反对在警察来之前采取任何行动33/423bSharksareatthetopofthefoodchain,,soiftheirnumbersdrop,theocean’secosystemwillbeindanger.34/42Manythinkthatsharksaretoostrongtobeendangered,buttheyarewrong.35/42练习题36/42

用方框中词适当形式完成下面句子。(1)Ithinkit’s____tomakesuchayoungboyworkallday.(2)Thepoorfishermancan’t_____hischildren’seducation.(3)Ithinkthegovernmentmustdevelop_____toprotectenvironment.(4)Eatingtoomuchjunkfoodis_______yourhealth.(5)Hecanusedifferent_______toworkouttheproblem.method,cruel,harmful,afford,lawcruelaffordlawharmfulmethod37/42II.单项选择。1.—Areyougoingto_____anyoftheevents?—Yes.Maybelongjumpandhighjump.

A.takepartin B.join C.attend D.joinin2.Ican’tafford____himanexpensivebirthdaypresent. A.tobuy