人教版九年級(jí)英語下Unit 13第2課時(shí)(A 3a-4c)課件

R·九年級(jí)下冊(cè)SectionA3a-4cUnit13We’retryingtosavetheearth!Newwords殘酷的；殘忍的(adj.)有害的(adj.)

工業(yè)；行業(yè) (n.) 法律；法規(guī)(n.)科學(xué)上的；科學(xué)的(adj.)承擔(dān)得起；買得起(v.)cruelscientificaffordharmfullawindustry鯊魚(n.)

(魚)鰭(n.)

鏈子；鏈條 (n.)

生態(tài)系統(tǒng)(n.)

可重復(fù)使用的(adj.)

運(yùn)輸業(yè)；交通運(yùn)輸(n.)

sharkreusabletransportationfinecosystemchain/?ɑ?rk//f?n//t?e?n//'i?k??s?st?m//?ri?'ju?z?bl//?tr?nsp??r'te??n/對(duì)……有害在……頂部或頂端食物鏈參加關(guān)掉付費(fèi)；付出代價(jià)采取行動(dòng)beharmfultoatthetopofthefoodchaintakepartinturnoffpayfortakeactionNewphrasesLead-insharksWatchavideoaboutsharks.點(diǎn)擊畫面播放視頻Savethesharks!SkippingreadingTalkaboutsharkfinsoup.Sharksareendangerednow.Appealtopeopleagainsteatingsharkfins.Para.3Para.1Para.2Readthetitle,thefirstandthelastsentenceofeachparagraphandmatchthemainideas.3aReadthepassageaboutsharksandcompletethefactsheetbelow.WheresharkfinsoupispopularNumberofsharkscaughtandtradedeveryyearHowgovernmentscanhelpTwoenvironmentalgroupsagainst“finning”InsouthernChinaAround70millionTodeveloplawstostopthesaleofsharkfinsWildAidandtheWWFSharksareendangered,readthepassageandjudgethesentences.Readthefirstparagraph1.Sharkfin

soupisfamousandexpensiveallaroundtheworld.2.Wehavetokillawholesharktogetabowlofsharkfinsoup.×√Readthesecondparagraph.1.Peoplecutoffsharks’finsandthrowthesharksbackintotheocean.2.Sharksareinthebottomofthefoodchainintheocean’secosystem.√×n.

生態(tài)系統(tǒng)食物鏈Readthethirdparagraph.1.WildAidandtheWWFareenvironmentalprotectiongroupsinChina.2.Sharkfinsaregoodforhealth.××Manyhaveheardofsharkfinsoup.ThisfamousandexpensivedishisespeciallypopularinsouthernChina.Butdoyourealizethatyou’rekillingawholesharkeachtimeyouenjoyabowlofsharkfinsoup?聽說尤其地;格外地Savethesharks!Whenpeoplecatchsharks,theycutofftheirfinsandthrowthesharksbackintotheocean.Thisisnotonlycruel,butalsoharmfultotheenvironment.Withoutafin,asharkcannolongerswimandslowlydies.Sharksareatthetopofthefoodchainintheocean’secosystem.Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.不但……而且……在……頂部或頂端切下來；剪下來不再beharmfulto…對(duì)……有害Manybelievethatsharkscanneverbeendangeredbecausetheyarethestrongestintheirfoodchain.Butinfact,around70millionsharksarecaughtandtradedinthisindustryeveryyear.Thenumbersofsomekindsofsharkshavefallenbyover90percentinthelast20to30years.瀕危的Environmentalprotectiongroupsaroundtheworld,suchasWildAidandtheWWF,areteachingthepublicabout“finning”.Theyhaveevenaskedgovernmentstodeveloplawstostopthesaleofsharkfins.Sofar,noscientificstudieshaveshownthatsharkfinsaregoodforhealth,sowhyeatthem?Helpsavethesharks!制定法律peopleenjoy____________________fishermen___________,______________,then_______________________________________________________decreasedquicklyabowlofsharkfinsoupcatchsharkscutofftheirfinsthrowthemintotheoceanthenumbersofsomekindsofsharks

Readthefirsttwoparagraphsandfillintheblanks.Retellthepassage.Awholesharkhasbeenkilledeachtimeyouenjoyabowlofsharkfinsoup.Whenpeoplecatchsharks,they__________theirfinsandthrowthesharksbackintotheocean.cutoffWithoutafin,asharkcan__________swimandslowlydies.Ifsharks’numbersdroptoolow,itwill_______________alloceanlife._________________somekindsofsharkshavefallen____over90percentinthelast20to30years.nolongerbringdangertoThenumbersofbyLanguagepoints1.Thisisnotonlycruel,butalsoharmfultotheenvironment.

notonly…butalso…是一個(gè)連詞詞組，意為“不但……而且……”用于肯定句中，常用來連接兩個(gè)并列的句子成分。例句：他不僅是我的老師，而且是我的好朋友。He’snotonlymyteacher,but(also)mygoodfriend.2.Sharksareatthetopofthefoodchainintheocean’secosystem.例句：把你的姓名寫在頁面的頂端。Writeyournameatthetopofthepage.

atthetopof意為“在……頂部或頂端”反義短語：atthebottomof在……的底部Readthepassageagainandfillintheblankswiththewordsinthebox.3bsoalthoughifbutwhen1.Manypeopledonotrealizetheyarekillingawholeshark_______theyenjoyabowlofsharkfinsoup.2.Sharksareatthetopofthefoodchain,____iftheir

numbersdrop,theocean’secosystemwillbein

danger.whenso3.Manythinkthatsharksaretoostrongtobe

endangered,____theyarewrong.4.________therearenoscientificstudiestosupport

this,alotofpeoplebelievethatsharkfinsare

goodforhealth.5.Sharksmaydisappearoneday___wedonotdo

somethingtostopthesaleofsharkfins.butAlthoughifGrammarFocusWe’retryingtosavetheearth.PresentprogressiveTheriverusedtobesoclean.usedtoTheairisbadlypolluted.PassivevoiceNoscientificstudieshaveshownthatsharkfinsaregoodforhealth.PresentperfectWeshouldhelpsavethesharks.Modalverbs時(shí)態(tài)定義現(xiàn)在進(jìn)行時(shí)現(xiàn)在完成時(shí)被動(dòng)語態(tài)表示現(xiàn)在或現(xiàn)階段正在發(fā)生或進(jìn)行的動(dòng)作表示過去發(fā)生的動(dòng)作對(duì)現(xiàn)在產(chǎn)生的影響或結(jié)果主語是謂語動(dòng)作的承受者時(shí)態(tài)構(gòu)成現(xiàn)在進(jìn)行時(shí)現(xiàn)在完成時(shí)被動(dòng)語態(tài)am/is/are+動(dòng)詞-ing形式have/has+動(dòng)詞過去分詞be+動(dòng)詞過去分詞時(shí)態(tài)常見標(biāo)志詞現(xiàn)在進(jìn)行時(shí)現(xiàn)在完成時(shí)now,atthemoment(此刻),look,listenalready,just或yetFillintheblanks.1.聽！一些女孩正在教室里唱歌。Listen.Somegirls___________intheclassroom.2.他們已經(jīng)打掃了教室。They______already_______theclassroom.aresinginghavecleaned3.這兒的人不說英語。English______________bypeoplehere.4.我曾去過那個(gè)國(guó)家。I______ever______tothatcountry.isn’tspokenhavebeen情態(tài)動(dòng)詞具有一定的意義，但不能單獨(dú)作謂語，其后需接動(dòng)詞原形一起構(gòu)成句子的謂語。(除haveto以外)沒有人稱和數(shù)的變化情態(tài)動(dòng)詞常見的情態(tài)動(dòng)詞有：can,may,must,need,haveto,could,should,oughtto情態(tài)動(dòng)詞的常見用法Wecandoitbyourselves.ItmustbeTom’s.Lookathisnameonthecover.3.MayIseeyourIDcard,sir?4.Shouldwefinishourhomeworkbeforenoon?表能力表推測(cè)表請(qǐng)求、許可表應(yīng)該4aFillintheblankswiththecorrectformsoftheverbsinbrackets.Joe:______youever______(take)partinan

environmentalproject?Ken:Yes,Ihave.I_______(help)withaClean-Up

Day

lastyear.Itwas__________

(consider)thebiggest

clean-upprojectthiscity____ever____(have).Joe:Howmanypeople_____(take)part?Havetaken

helpedconsideredhadhadtookKen:I_____(think)morethan1,000people_____(come)tohelpout.Joe:That’sfantastic!Iguesseveryoneinthiscityis_______(try)toimprovetheenvironment.Ken:Yes,wecan’taffordto_____(wait)anylongertotakeaction!thinkcametryingwaitLanguagepointstakepartin意為“參加”。例句：你參加過任何活動(dòng)嗎？Didyoutakepartinanyactivity?【辨析】takepartin,join與joinintakepartinjoinjoinin指參加某項(xiàng)活動(dòng)（比賽）并在活動(dòng)中起一定的作用。指參加某黨派、團(tuán)體或參軍等，并且成為其中的一員。指參加某項(xiàng)活動(dòng)，但多指正在進(jìn)行的活動(dòng)。1.Didyou___________thesportsmeetingyesterday?2.He________thearmylastyear.3.Ihopeyoucan________thediscussion.takepartinjoinedjoininFillintheblanks.4bcanwouldcouldhavetoshouldmustmay/mightPeople__________thinkthatbigthings___________bedonetosavetheearth.Manyforgetthatsavingtheearthbeginswithsmallthings.Forexample,you_______________saveelectricitybyturningoffthelightswhenyouleavearoom.You_______________alsousereusablebagsinsteadofplasticbags.

may/mightmust/havetocan/shouldcan/shouldFillintheblankswiththeappropriatemodalverbsfromthebox.Ithinkit’sagreatideathatyounow______payforplasticbagsinsomestores.Andinsteadofdrivingtoschoolorwork,you_______________rideyourbikeorwalk.Ifit’sfar,you_________takethebus.Allthesesmallthings________addupandbecomebigthingsthat_________________improvetheenvironment.Let’stakeactionnow!havetocancancancan/shouldMakealistofthingsthatpeoplecandotohelptheenvironmentanddiscussyourlistwithyourpartner.4cIthinkthateveryoneshouldusepublictransportation.Idisagree.It’sdifficultforparentswithyoungchildrentousepublictransportation…DiscussionWayspeoplecanusetohelptheenvironment.recyclebooksandpaperbringabagtogoshoppingthrowrubbishintothebinStopkillingwildanimalsandprotectthem.課堂小結(jié)We’retryingtosavetheearth.Theriverusedtobesoclean.Theairisbadlypolluted.Noscientificstudieshaveshownthatsharkfinsaregoodforhealth.Weshouldhelpsavethesharks.1.如果它們（鯊魚）的數(shù)目降至過低，會(huì)給所有

海洋生物帶來危險(xiǎn)。Iftheirnumbersdroptoolow,

itwillbringdangertoalloceanlife.2.但事實(shí)上，在這個(gè)行業(yè)，每年大約有七千萬條

鯊魚被捕捉和交易。Butinfact,around70millionsharksarecaught

andtradedinthisindustryeveryyear.3.在過去的二三十年里，一些種類的鯊魚的數(shù)量

下降了百分之九十以上。Thenumbersofsomekindsofsharkshavefallen

byover90percentinthelast20to30years.Exercise一、用所給詞的適當(dāng)形式填空。1.Theoldmanused_____(be)ateach