Unit13SectionA(3a-4c)课件人教版英语九年级全一册

Unit13We’retryingtosavetheearth!SectionA(3a~4c)新课导入Therearesomeanimalsareendangered.Weshoulddosomethingtoprotecttheanimalsandtheenvironment!Savetheearth!Savetheanimals.新课导入Thezoosprovidehomesformanyendangeredanimals.新课导入FreeTalk1.Haveyoueverseenashark（鲨鱼）?2.Whatdoyouknowaboutsharks?Discusswithyourpartner:

LanguageGoal新知学习课堂小结当堂检测学习目标重点研讨1. 能熟悉并正确运用本课时的重点单词和短语2. 能用英语谈论鲨鱼现状和保护方式3.能熟练运用现在进行时等时态及情态动词新知学习课堂小结当堂检测学习目标重点研讨3aPara.1A.Twogroupsagainst“finning”.Para.2B.Somethingaboutsharkfinsoup.Para.3C.Sharksareendangerednow.鳍新知学习课堂小结当堂检测学习目标重点研讨Manyhaveheardofsharkfinsoup.This

famousandexpensivedishisespecially

popularinsouthernChina.Butdoyourealize

thatyou’rekillingawholesharkeachtime

youenjoyabowlofsharkfinsoup?新知学习课堂小结当堂检测学习目标重点研讨sharkfinsoup1.Whereissharkfinsouppopular?2.Whatdoesitmeanwhenpeopleenjoyabowlofsharkfinsoup?ReadPara.1southernChinaThey’rekillingawholesharkwhentheyenjoyabowlofsharkfinsoup.新知学习课堂小结当堂检测学习目标重点研讨

Whenpeoplecatchsharks,theycutofftheir

finsandthrowthesharkbackintotheocean.

Thisisnotonlycruel,butalsoharmfultotheenvironment.Withoutafin,asharkcannolongerswim

andslowlydies.Sharksareatthetopofthefoodchainintheocean’s

ecosystem.If

theirnumbersdroptoolow,itwillbringdangertoalloceanlife.Manybelieve

thatsharkscanneverbeendangeredbecausetheyarethestrongestintheirfood

chain.Butinfact,around70millionsharksarecaughtandtradedinthisindustry

everyyear.Thenumbersofsomekindsofsharkshavefallenbyover90percentin

thelast20to30years.新知学习课堂小结当堂检测学习目标重点研讨ReadPara.21.Whyisitharmfultotheenvironment?2.Whatdothetwonumbersmean?70million90percentSharksareatthetopofthefoodchain,soiftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.Around70millionsharksarecaughtandtradedeveryyear.Thenumbersofsomekindsofsharkshavefallenbyover90percentinthepast20to30years.新知学习课堂小结当堂检测学习目标重点研讨Environmentalprotectiongroupsaroundtheworld,suchasWildAidandthe

WWF,areteachingthepublicabout“finning”.Theyhaveevenaskedgovernments

to

developlawstostopthesaleofsharkfins.Sofar,noscientificstudieshave

shownthatsharkfinsaregoodforhealth,sowhyeatthem?Helpsavethesharks!新知学习课堂小结当堂检测学习目标重点研讨ReadPara.31.Whatarethetwoenvironmentalprotectiongroups?美国野生救援会(WildAid)是1999年在美国注册的非盈利机构，总部在美国旧金山，它对濒临绝迹的野生动物提供直接的保护，并且发展许多有创意的计划，以教育大众关于野生动物及生态平衡的重要性。世界自然基金会(WWF)是在全球享有盛誉的、最大的独立性非政府环境保护组织之一，自1961年成立以来，WWF一直致力于环保事业，在全世界拥有超过500万支持者和超过100个国家参与的项目网络。新知学习课堂小结当堂检测学习目标重点研讨2.Whataretheydoingandwhathavetheydone?Theyareteachingthepublicabout“finning”.Theyhaveevenaskedgovernmentstodeveloplaws(法律)tostopthesaleofsharkfins.ReadPara.3新知学习课堂小结当堂检测学习目标重点研讨WheresharkfinsoupispopularNumberofsharkscaughtandtradedeveryyearHowgovernmentscanhelpTwoenvironmentalgroupsagainst"finning"70millionWildAidandtheWWFsouthernChinaComplete

thefactsheetbelow.developlawstostopthesaleofsharkfins.新知学习课堂小结当堂检测学习目标重点研讨3bReadthepassageagainandfillintheblankswiththewordsinthebox.

so

althoughif

but

when1.Manypeopledonotrealizetheyarekillingawholeshark_____theyenjoyabowlofsharkfinsoup.2.Sharksareatthetopofthefoodchain,______

iftheirnumbers

drop,theocean'secosystem

willbeindanger.sowhen新知学习课堂小结当堂检测学习目标重点研讨so

althoughif

but

whenManythinkthatsharksaretoostrongtobeendangered,_________theyarewrong._________therearenoscientificstudiestosupportthis,alotofpeoplebelievethatsharkfinsaregoodforhealth.5.Sharksmaydisappearoneday______wedonotdosomethingtostopthesaleofsharkfins.butAlthoughif新知学习课堂小结当堂检测学习目标重点研讨Languagepoints1Asharkcannolongerswimandslowlydies.

鲨鱼不能再游泳然后慢慢死掉。nolonger意思是“不再”e.g.

I’mnolongerastudent.

我不再是个学生了。新知学习课堂小结当堂检测学习目标重点研讨有两个短语和nolonger同义，即not…anylonger和not…anymore，但它们侧重的方面不同。新知学习课堂小结当堂检测学习目标重点研讨nolonger和not…anylonger侧重时间。

e.g.Henolongerliveshere.=Hedoesn’tlivehereanylonger.

他不在这儿居住了。(一个时间以前他住在这儿，过了这个时间，他就离开了。)not…anymore侧重程度和数量e.g.Youcandrinknomore.=Youcan’tdrinkanymore.

你不能再喝了。(喝酒的量到了一定程度，不能再继续下去了。)新知学习课堂小结当堂检测学习目标重点研讨2Thismethodisnotonlycruel,butalsoharmfultotheenvironment.这种方法不但残忍而且对环境有害。1)notonly…butalso…用于连接两个表示并列关系的成分，着重强调后者，其意为“不仅……而且……”;其中also有时可以省略。e.g.Shenotonlyplayswell,butalsowritesmusic.

她不但很会演奏，而且还会作曲。

Notonlymenbutalsowomenwerechosen.

不仅仅是男的，女的也有被选中的。新知学习课堂小结当堂检测学习目标重点研讨A.若连接两个成分作主语，其谓语通常与靠近的主语保持一致。e.g.Notonlyyoubutalsohehastoleave.

不只是你，他也得离开。B.notonly放在句首，后接句子时要用倒装结构。

e.g.Notonlyhadthepoormanbeenfined,butalsohehadbeensenttoprison.这个可怜的人不仅被罚款，而且还被送进了监狱。新知学习课堂小结当堂检测学习目标重点研讨新知学习课堂小结当堂检测学习目标重点研讨3Sharksareatthetopofthefoodchainintheocean’secosystem.鲨鱼位于海洋生物系统食物链的顶部。atthetopof在……顶部或顶端e.g.Ilookedatthetopofhishead,hishairshinyandpartedsmoothly.我看他的头顶,头发闪亮且平滑地分开。Heshoutedatthetopofhisvoiceinorderthathemightbeheard.他尽力大声叫喊,以便别人能听见。新知学习课堂小结当堂检测学习目标重点研讨4Iftheirnumbers

droptoo

low,itwillbringdangertoalloceanlife.如果它们的数目降至过低，会给所有海洋生物带来危险。

此句复数形式的numbers表达全海洋中鲨鱼的总量。当表示数值的高或低时，number要用high或low修饰。常与number搭配的动词还有grow,fall等。e.g.Thenumberoffamiliesthatowncarshasbeen

growingquicklyrecently.近来拥有轿车的家庭数量增长很快。新知学习课堂小结当堂检测学习目标重点研讨5Environmentalprotectiongroupsaroundtheworld,suchasWildAidandtheWWF,areteachingthepublicabout“finning”.世界各地的环境保护组织，如野生救援协会和世界自然基金会，都在教育公众有关“猎翅”的行为。句中fin本为名词，指“鱼鳍”。此句中的finning由动词化的fin（割鲨鱼鳍以获取鱼翅）的-ing形式转化而成，指课文中所陈述的“猎翅”这一行为。新知学习课堂小结当堂检测学习目标重点研讨GrammarFocusWe’retryingtosavetheearth.PresentprogressiveTheriverusedtobesoclean.usedtoTheairisbadlypolluted.PassivevoiceNoscientificstudieshaveshownthatsharkfinsaregoodforhealth.PresentperferctWeshouldhelpsavethesharks.Modalverbs新知学习课堂小结当堂检测学习目标重点研讨现在进行时:PresentProgressive结构:be(am/is/are)+v.-ing标志词:look,listen,now,rightnow…e.g.Look!Theboyiscrying.定义：表示说话时(瞬间)正在进行的动作,也表示目前或现阶段正在进行的动作。新知学习课堂小结当堂检测学习目标重点研讨ExerciseWhatafinedaytoday!Look!Whataretheydoing?新知学习课堂小结当堂检测学习目标重点研讨usedtodo与beusedtodoingusedtodosth.表示过去常常做某事,而现在往往不做了,后接动词原形。beusedtodoingsth.表示习惯于做某事e.g.Iusedto

getupatsixo’clock.我过去常常六点起床。Joeisusedtodrinkingacupofcoffeeeverymorning.乔每天早上习惯喝一杯咖啡。新知学习课堂小结当堂检测学习目标重点研讨Translation.1.她过去常常周末和朋友闲逛。2.他习惯于每天晚上熬夜。ExerciseSheusedtohangoutwithfriendsonweekends.Heisusedtostayingupeverynight.新知学习课堂小结当堂检测学习目标重点研讨被动语态：Passivevoice定义：表示主语是动作的承受者，即行为动作的对象的一种语态。结构：be+过去分词新知学习课堂小结当堂检测学习目标重点研讨TranslatethesentencesbyusingPassivevoice.1.刚才一些老年人参观了博物馆。2.工人们使用不同种类的机器工作。Themuseumwasvisitedbysomeoldpeoplejustnow.Differentkindsofmachinesareusedtoworkbytheworkers.Exercise新知学习课堂小结当堂检测学习目标重点研讨结构:has/have+过去分词标志词：already,yet,ever,never,since,for…e.g.Ihaven’tfinishedmyhomeworkyet.定义：表示动作已经完成,但对现在造成影响;或者表示从过去某一时间开始一直延续到现在并还可能持续下去的动作。现在完成时:PresentPerfect新知学习课堂小结当堂检测学习目标重点研讨ExerciseCompletethefollowingsentences.I_________(be)inBeijingfortwoyears.2.I_____never_____(hear)ofthatmanbefore.3.Tom__________(work)theresincetwoyearsago.4.Thetwins___________(wash)theclothesforanhour.5.He_________(play)basketballsincethreeyearsago.6.Howlong____Sally_____(sing)yet?havebeenhaveheardhasworkedhavewashedhasplayedhassung新知学习课堂小结当堂检测学习目标重点研讨情态动词1.

情态动词本身有一定的词义,表示说话人的情绪、态度或语气,但不能单独作谓语,只能与其他动词构成谓语。常见的有:can(could),may(might),must,need,shall(should),will(would)等。新知学习课堂小结当堂检测学习目标重点研讨2.情态动词无人称和数的变化,后接动词原形。否定式是在情态动词后面加not。个别情态动词有过去式形式,可用来表达更加客气、委婉的语气。

e.g.Kencanclimbupthetresslikeakoala.Tracycouldrideabicyclewhenshewasfiveyearsold.Youmustn’tplaywithfire.Itisdangerous.新知学习课堂小结当堂检测学习目标重点研讨Translation.1.我们不能在教室里吃东西。2.首先你必须完成作业。3.他现在不可能在家。4.她一定知道这个问题的答案。Wecan’teatintheclassroom.

Youmustfinishyourhomeworkfirst.Hecan’tbeathomenow.

Shemustknowtheanswertothisquestion.Exercise新知学习课堂小结当堂检测学习目标重点研讨4aFillintheblankswiththecorrectformsoftheverbsinbrackets.Joe:_____youever_____(take)partinanenvironmentalproject?Ken:Yes,Ihave.I_____(help)withaClean-UpDaylastyear.Itwas___________(consider)thebiggestclean-upprojectthiscity_____ever______(have).Havetakenhelpedconsideredhadhad新知学习课堂小结当堂检测学习目标重点研讨tookthinkcametryingwait新知学习课堂小结当堂检测学习目标重点研讨4bFillintheblankswiththeappropriatemodalverbsfromthebox.People_____thinkthatbig

things_____bedonetosavetheearth.Manyforgetthatsavingtheearth

beginswithsmallthings.Forexample,you_____saveelectricity

byturningoffthelightswhenyouleavearoom.You_____alsouse

reusablebagsinsteadofplasticbags.maymustcouldcouldcanwouldcouldhavetoshouldmustmay/might新知学习课堂小结当堂检测学习目标重点研讨havetocancouldcancanwouldcouldhavetoshouldmustmay/mightcan新知学习课堂小结当堂检测学习目标重点研讨4cMakealistofthingsthatpeoplecandotohelptheenvironmentanddiscussyourlistwithyourpartner.usepublictransportation(n.交通运输);…Ithinkthateveryoneshouldusepublictransportation.Idisagree.It’sdifficultforparentswithyoungchildrentousepublictransportation…重要语法：现在进行时现在完成时被动语态情态动词usedto句型

重要短语：nolonger不再notonly…butalso…不仅…