搜索
1Unit13We’retryingtosavetheearth!一、教学目标：1.语言知识目标基本词汇：litter,coal,ugly,cost,wooden,plastic,takeaway,afford基本词组：beharmfulto,atthetop(ofsth.),takepartin,turnoff,takeaction,throwaway,putsth.togooduse,pull…down,bringback2.技能目标:能正确运用现在进行时，现在完成时，被动语态，情态动词和usedto句型。3.情感目标:有环境危机意识，学会关注环境保护环境。二、教学重难点：1.教学重点：（1）能正确运用现在进行时，现在完成时，被动语态，情态动词和usedto句型。（2）保护环境的措施方法。2.教学难点：能正确运用现在进行时，现在完成时，被动语态，情态动词和usedto句型。三、教学步骤:SectionA1(1a-2d)I.PresentationShowthepictureoftheearthandtellstudentstheearthispollutednow.Forexample:(1)Thefactoriesthatburncoalpollutetheairwithalotofblacksmoke.(2)Factoriesputwasteintotheriver.(3)Peopleshouldthrowawaylitterinthebin.(4)Therearemorecarsontheroad.II.LearningHerearesomewordsrelatedtodifferentkindsofpollution.III.Listening1.1bListenandcompletethesentences.2.Listenagainandcheck(√)thesentencesyouhear.1)Wecouldgofishingintheriver.2)Theriverwasreallydirty.3)Theriverhasalwaysbeenthenicestriverinthistown.4)Weshouldasktheteachersforhelp.IV.Practice1.Role-playtheconversationin1c.2.Makeconversationsusingthepollutionin1a.V.Languagepoints21.We’retryingtosavetheearth!我们正在竭尽全力拯救地球!trytodo=tryone’sbesttodo努力去做某事。e.g.Everystudentshouldtrytostudyhardinordertostudyinauniversity.为了进入大学学习，每个学生都应该努力学习。2.Everyoneinthistownshouldplayapartincleaningitup!playapartin在……方面起作用e.g.Agooddietplaysalargepartinhelpingpeoplelivelonger.健康的饮食在帮助人们长寿方面起着非常大的作用。playapart在……中扮演角色e.g.HewasinvitedtoplayapartinthisTVplay.他被邀请参加这个电视剧的演出。4.Eventhebottomoftheriverwasfullofrubbish.Yes,butpeoplearethrowinglitterintotheriver.litter和rubbish都可指“垃圾”，用作不可数名词。rubbish指“没用的东西(被扔或将要丢弃的无用的东西)”不可回收。litter指“(室内或公共场所)乱扔的废物(纸屑、不要的包装纸、废瓶等)”还可回收VI.Listening1.2aListentotheinterview.CirclethekindsofpollutionthatJasonandSusantalkabout.Keys:morecarspollutearethrowingawaypublicplaces3.Listenandanswerthequestions.VII.Practice(2c)Usetheinformationin2aand2btorole-playconversationsbetweenJasonandSusan.VIII.DiscussionAskstudentswhatweshoulddotosavetheearth.Helpstudentsanswer,turnoffthelightswhenyouleavearoom;stopridingincars;stopusingpapertowelsornapkins;recyclebooksandpaper.IX.Reading1.Read2dandcompletethechart.2.Role-playtheconversation.X.Summaryandlanguagepoints1.Thisisturningbeautifulplacesintouglyones.turn…into…把……变成……e.g.Theicyrainseemedliketoturnintosnow.渐渐地冻雨又变成雪花的模样。2.It’sgoodforhealthanditdoesn’tcostanything!costv.花费；使付出3指花费金钱，主语通常是物。cost的过去式和过去分词均为cost。e.g.ThenewshirtcostMrWang200yuan.王先生花了200元买了新衬衫。Howmuchdoesthenewcomputercost?新电脑花了多少钱？take,spend,pay&costtake，spend，pay和cost都可以表示“花费”，但它们的用法各有不同。1)take多表示花费时间，常用于Ittakessb.sometimetodosth.这一句型中，其中it作形式主语。e.g.Itusuallytakesme40minutestocookthedinner.2)spend多表示花费时间和金钱，主语通常是人，常用于sb.spend(s)sometime/moneyonsth.和sb.spend(s)sometime/money(in)doingsth.两种句型。e.g.Davidspent2,000yuanonthenewmachine.Myfatherspendsanhour(in)watchingthenewsonTVeveryday.3)pay多表示花费金钱，主语通常是人，常用于sb.pay(s)somemoneyforsth.句型。e.g.Tommypaid20yuanforhisbreakfastyesterday.4)cost多表示花费金钱，主语通常是物，常用于sth.cost(s)(sb.)somemoney.句型。e.g.ThenewdresscostLinda88yuan.根据句意用take,spend,pay或cost的适当形式填空。1)Thatnewcar________themlotsofmoney.2)Mona__________50yuanonthebooksjustnow.3)Itusually_______meanhourtodomyhomework.4)Youshould__________sometimepractisingyourpronunciation.5)Mybrother_______6,000yuanforthenewcomputeryesterday.Keyscostspenttakesspendpaid3.Sotogether,ouractionscanmakeadifferenceandleadtoabetterfuture!makeadifference(to…)表示(对……)产生影响或作用e.g.Doyouthinkhiswordswouldmakeanydifferencetothefinaldecision?你认为他的话会对最后的决定产生影响吗？XI.ExercisesXII.ThinkaboutTheearthisbadlypolluted.Pleasemakeaposterandthinkofwhatwecando.XIII.Homework1.Copythenewwordsandrememberthem.2.Readthelisteningmaterialsof1b,2a.反思：4SectionA2(3a-3c)I.RevisionRole-play2d.II.Leadin(1)Teachertellsstudentstheearthisbadlypolluted.Whatshouldwedotosavetheearth?Let’stakeaction.(2)Therearesomeanimalsareendangered.Weshoulddosomethingtoprotecttheanimalsandtheenvironment!III.Discussion(1)Haveyoueverseenashark?(2)Whatdoyouknowaboutsharks?IV.ReadingV.Practice(3b)VI.Languagepoints1.Asharkcannolongerswimandslowlydies.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。有两个短语和nolonger同义，即not…anylonger和not…anymore，但他们侧重的方面不同。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。)2.Thismethodisnotonlycruel,butalsoharmfultotheenvironment.这种方法不但残忍而且对环境有害。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……”;其中的also有时可以省略。e.g.1)Shenotonlyplayswell,butalsowritesmusic.她不仅很会演奏，而且还会作曲。2)Notonlymenbutalsowomenwerechosen.不仅仅是男的，女的也有被选中的。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。5notonly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。beharmfulto对…有害e.g.Smokingisharmfultothehealth.吸烟有损健康。Playingcomputergamesmuchisharmfultostudents.电脑游戏玩太多对学生有害。VII.HomeworkWrite5measurestoprotecttheenvironment.反思：SectionA3(GrammarFocus-4c)I.Revision1.Checkifyouknowthesephrases.①不同种类的污染②河底③把垃圾扔到河里④在…中起作用⑤在中国