2023学年完整版精1Unit13SectionA（3a4c）教案

Unit13We’retryingtosavetheearthSectionA（3a-4c）教案一、教学目标：知识与技能：1.能正确使用下列词汇sharkfincruelharmfulatthetopofchainindustrylawscientificaffordreusabletransportation2.能正确使用下列常用表达beharmfulto,attopof,thefoodchain,takepartin,can’taffordtodo,turnoff,payfor,takeaction3.能谈论环境污染和环境保护问题过程与方法：通过阅读训练学生的综合语言运用能力，培养表达自己的观点的能力。情感态度价值观：学生通过了解人类捕捉鲨鱼获取鱼翅，破坏环境污染问题认识到保护动物的重要性。二、教学重点与难点：记忆重点单词及短语，复习现在完成时态提高学生语言的综合运用能力三、教学准备：1、多媒体课件2、录音机教学过程学生活动设计意图Step1LeadinAskSssomequestionsandletthemdiscusstogether.Doyoulikeanimals?Doyouknowtheshark?Doyouknowwhythepeoplekilledthesharks?Doyouhearaboutthesharkfinsoup?Nowmanysharksarekilledforthiskindofsoup.Sharksarefewerandfewer.Whatshouldwedo?Let’scometo3a.Step2While-readingActivities1.Readforthegeneralideaof3a.Thegeneralideaofthearticleisabout____.A.airpollutionB.thesharksC.waterpollution2.Readthepassageaboutsharksandcompletethefactsheetbelow.3.Readforthespecificideasof3bandfillintheblankswiththewordsinthebox.so,although,if,but,when（1）Manypeopledonotrealizetheyarekillingawholeshark_________theyenjoyabowlofsharkfinsoup.（2）Sharksareatthetopofthefoodchain,_______iftheirnumbersdrop,theocean’secosystemwillbeindanger.(3)Manythinkthatsharksaretoostrongtobeendangered,_________theyarewrong.(4)_________therearenoscientificstudiestosupportthis,alotofpeoplebelievethatsharkfinsaregoodforhealth.(5)Sharksmaydisappearoneday__________wedonotdosomethingtostopthesaleofsharkfins.Step3.Post-readingActivities1.Readafterthetape.2.Readthepassagealoudbythestudentsthemselves.3.Retellthepassageaccordingtothekeywordsintheformbelow.SavethSharks Why Enjoysharkfinsoup=killawholeshark How Becutofffins;dieslowly;thetopofthefoodchain;bringdangertoall What asktodeveloplaws4.Completethepassagewithoutlookingatyourbook.SavetheSharks!Many____________ofsharkfinsoup.Thisfamousandexpensivedishisespeciallypopularin________China.Butdoyourealizethatyou’rekillingawholesharkeachtimeyouenjoyabowlofsharkfinsoup?Whenpeoplecatchsharks,theycutofftheirfinsandthrowthesharkbackintotheocean.Thisisnotonlycruel,butalsoharmfultotheenvironment.________afin,asharkcannolongerswimandslowly_______.Sharksareatthetopofthefoodchainintheocean’secosystem.Iftheir______droptoolow,itwillbring________toalloceanlife.Manybelievethatsharkscanneverbe________becausetheyarethestrongestintheirfoodchain.Butinfact,around70millionsharks_________andtradedinthisindustryeveryyear.Thenumbersofsomekindsofsharks__________byover90percentinthelast20to30years.Environmentalprotectiongroupsaroundtheworld,suchasWildAidandtheWWF,areteachingthepublicabout“finning”.Theyhaveevenaskedgovernmentstodeveloplawstostopthesaleofsharkfins.Sofar,noscientificstudies_________thatsharkfinsaregoodforhealth,sowhyeatthem?Helpsavethesharks!Step4GrammarFocus1.T:Dearstudents,you’llhave2minutestoread3aquicklyandputthesentencesinGrammarFocusintoChinese.We’retryingtosavetheearth. PresentprogressiveTheriverusedtobesoclean. usedtoTheairisbadlypolluted. PassivevoiceNoscientificstudieshaveshownthatsharkfinsaregoodforhealth. PresentperfectWeshouldhelpsavethesharks. ModalverbsTask1讨论现在完成时：现在完成时的结构是什么？标志词有哪些？过去分词有哪些构成规则？Task2讨论被动语态：被动语态的构成是什么？一般现在时、一般过去时、一般将来时和情态动词的被动语态的结构是什么？Task3讨论usedto的用法：usedto表示什么意思？后接什么？否定句和一般疑问句的形式是什么？usedto和beusedto的区别是什么？2.4aFillintheblankswiththecorrectformsoftheverbsinbrackets.Nowyou’llhave2minutesagaintoreadtheconversationquicklyandfindoutthecorrectanswers.Joe:________youever________(take)partinanenvironmentalproject?Ken:Yes,Ihave.I__________(help)withaClean-UpDaylastyear.Itwas___________(consider)thebiggestclean-upprojectthiscity________ever________(have).Joe:Howmanypeople___________(take)part?Ken:I___________(think)morethan1,000people_________(come)tohelpout.Joe:That’sfantastic!Iguesseveryoneinthiscityis________(try)toimprovetheenvironment.Ken:Yes,wecan'taffordto__________(wait)anylongertotakeaction!Let’schecktheanswers.3.Nowread4b.Fillintheblankswiththeappropriatemodelverbsfromthebox.4bcan,would,could,haveto,should,must,may/mightPeople__________thinkthatbigthings____________bedonetosavetheearth.Manyforgetthatsavingtheearthbeginswithsmallthings.Forexample,you_________saveelectricitybyturningoffthelightswhenyouleavearoom.You_________alsousereusablebagsinsteadofplasticbags.Ithinkit'sagreatideathatyounow_______payforplasticbagsinsomestores.Andinsteadofdrivingtoschoolorwork,you________rideyourbikeorwalk.Ifit’sfar,you_________takethebus.Allthesesmallthings_________addupandbecomebigthingsthat__________improvetheenvironment.Let'stakeactionnow!Let’schecktheanswers.4.4cMakealistofthingsthatpeoplecandotohelptheenvironmentanddiscussyourlistwithyourpartner.HomeworkRetell3a学生讨论学生速读阅读填写学生填写学生大声阅读，复数短文学生填写学生讨论学生填写讨论答案导入新课养学生阅读前的预测培养学生快速寻找信息的能力锻炼学生在有限的时间内快速提取信息并概括归纳的能力检验学生对连词的掌握效果进一步提高学生的综合运