八年级英语下册 Chapter 3 Environment课件 牛津深圳版.ppt

chapter3environment contents readingmorepracticewritinglisteninglanguagespeaking reading airpollution industrialpollution smog smoke fog waterpollution howabouttheenvironmentnowadays thinkingoverandusingsomesimplephrasestodescribetheenvironment thepossibleanswermaybe treescutting waterpollution airpollution rubbisheverywherenoisy carstoomany4 whatisthebestwaytoprotectourearth asagreenconsumers environmentalfriendly atmosphere chemicals carbondioxide burningfuels mainly causedby pollutedby thegreenhouseeffect words expressions atmosphere thesurfaceofthemoon rainforest destructionofrainforest createtoomuchrubbish flood 1 greenconsumer 绿色消费者consumer 解释 apersonwhobuysorusessomething 词性转换 consumev 例句 theconsumerscomplainedaboutthepoorqualityoftheelectronicproducts 2 guide1 指南 指导手册2 导游 向导3 旅游手册 例句 youmayreadtheguidetofrenchwinesfirst 例句 wefoundaguidewhoknewthemountainswell 例句 thisisanewlypublishedguideaboutshanghai 3 danger n危险beindanger 处于危险中 词性转换 adj dangerous 例句 1 ourearthisindangerbecauseofpollution 2 ourearthisdangerousbecauseofpollution 4 environmentn 环境 词性转换 environmentaladj 环境产生的environmentallyadv 环境产生地 例句 1 walkinginsteadofdrivingisgoodfortheenvironment 2 environmentalbagsisverypopularbypeoplenow 3 savingearthistobuyanduseenvironmentallyfriendlythings 5 savetheearth 拯救地球save 拯救 搭救v 词性转换 safeadj 安全的 safetyn 安全 adv safely 6 akindof 一种 种类 例句 airpollutionisakindofatmospherepollution 7 getout散发出去 出去geton上车getoff下车getfrom从 得到 例句 1 solarheatercangetoutenergy 2 wegetonfuyuanstationandgetoffatfuanschool 3 igotapresentfrommyfriendlastweek 8 lifeless 无生命的 反义词 living 解释 outanyformoflife 例句 wethinkthatmarsisalifelessplanet 9 act 生效 发生作用 解释 dosth orbehaveinacertainway 词性转换 n action actor actress adj active 例句 doesthedrugtakelongtoact 10 keep from 阻止 做某事keepin 抑制 保留 例句 shetriedtokeepmefromseeingtheletter 区分 keep doing保持 一直做某事 11 warmth 温暖 暖和n 解释 heat 词性转换 adj warm 例句 shefeltthewarmthofthesunonherface 12 pollute 污染 解释 makesomethingdirty unpleasantordangerous 例句 youcanseethepollutiononthisbeach 词性转换 n pollution 例句 1 yoursmokingispollutingtheairinthisroom 2 theriverispollutedbythefactory 13 chemical 化学药品 词性转换 n chemistry化学 14 intheformofgases 以气态的形式存在 15 keepin 抑制 保留 2 don tplaybytheriverincaseyoufallinanddrown 例句 1 someplantswilldrownifyouwaterthemtoomuch 18 drown 淹死 解释 killbycoveringwithwater 词性转换 n drowner 1 ifinallyfoundmyownlevelinthebusinessworld 17 level 水平 水准 16 absorb 吸收takein surface表面n 例句 1 thesurfaceoftheseaiscalm 2 peoplewonderthesurfaceofthemoon 20 sunlight阳光n 例句 1 allplantsneedaplentyofsunlightandwater readthetext reading youaregoingtoreadabookreviewbytonyma beforeyoureadit lookatthebookcover thetitle thefirstparagraphandtheheadings andtrytoanswerthesequestions alookandthink theyounggreenconsumerguide thewritersarejohnelkingtonandjuliahailes agreenconsumerissomeonewhoonlybuysgoodsthatwillnotharmtheenvironment themaintopicofthebookisbecomingagreenconsumertosaveearth four thegreenhouseeffect destructionofrainforests badhabits howcanwesaveearth reading millieistalkingtoarthuraboutthereview butshedoesn tnotmakeherselfclear 清楚 replacetheitalicizedwordswithinformationfromthereview bfindthefacts 1 withoutit earthwouldascoldandlifelessasthesurfaceofthemoon 2 wearepollutingitwithchemicals 3 thisismakingthegreenhouseeffectworse 4 itabsorbswaterwhenitrains theatmosphere theatmosphere theburningandcuttingdownoftrees soil 5 thiscreatesmountainsofrubbish 6 itpollutesourlandandseas 7 thesethingswillnotdamagetheenvironment ourhabitofusingthingsonceandthenthrowingthemaway alotofrubbish environmentallyfriendly things skimmingthetextofchapter3findoutthemainideaofeachparagraphs readthefirstparagraphandfindoutthemainidea thefirstparagraphtellsusourworldisindanger 1 thesecondparagraphsays thegreenhouseeffect isitveryimportant 2 whatisthemainideainthisparagragh theatmospherearoundearthisimportanttoalllivingthings moretreesarecutdown whatwillhappen itsmainideainthispassageistheburningandcuttingdowntreesismakingthegreenhouseeffectworse itcausesfloods inthefourthpicturewecanseeamountofrubbishthere andwhatdoyouthinkofthispassage badhabitscausepollution rubbishshouldbethrownawayinrightwayorweshoulduserecyclingthings whatdoesthelastpassagetalkabout begreenconsumersandtrytouseandbuyenvironmentallyfriendlythings reading c1findthewordsandphrasesincolumnainthearticle thenreadthewordsaroundthemandchoosetheirmeaningsfromcolumnb cfindthemeanings ab1createsa leadto2atmosphereb takesin3causec beinggoodtotheenvironment4floodsd themixtureofgasesaroundearth5absorbse produce6environmentallyf alargeamountofwaterfriendlycoveringanarea7warmthg heat c2choosewordsandthephrasesintheboxtocompletethedialoguesbelow mountainsof lifeless environmentsunlight reach habit 1judywhyshouldweplantmoretrees paulbecauseitcanhelpprotectthe 2judypeteroftentalkswithhismouthfullwhenheeatsdinner pauloh that srude hemustchangehiseating 3 judywhydopeoplewearsunglasses paul paultheywearsunglassestoprotecttheireyesfromstrong environment habits sunlight 4judyareyoutallenoughto thebookonthetopoftheshelf paulno i mnot iwillaskmyfatherforhelp 5judyihave worktodotoday paulthenyoucan tgooutwithme canyou 6judyismarsa planet paulno itisn t thereisnoairorwateronit mountainsof lifeless reach d1basedonyourreadingofthereview choosethecorrectanswers dfindthefacts 1 thewritersofthebookcomparetheatmosphereto agreenhouseanordinaryhousec theglassofagreenhouse2 becauseofpollution notenoughsunlightisreachingearthtoomuchheatiskeptinearthtooenoughheatisleavingearth 3thegreenhouseeffectcausesthelevelofseasto riseb fallc remainthesame4 ifwecutdownmoretrees thegreen houseeffectwillbe worseb betterc thesame5 manypeopleusethingsonlyonceandthenthrowthemaway this rubbish reducesb helpcleanc produces6 thebookencouragesyoungpeopleto a protecttheenvironmentmoreb buymorethingsc learnmoreaboutearth d2answerthefollowingquestionsaccordingtothereview dfindthefacts 1 whatcausesourearthtobeindanger 2 iftheatmospherekeepsintoomuchheat willitbeharmfultoearth whyorwhynot thegreenhouseeffect thedestructionofrainforestsandourbadhabits yes itwill becauseitwillcausethelevelofseastoriseanddrowncitiesandevencountries 3 whatarethecausesofthegreenhouseeffect 4 dothewritersofthebookgiveanexampleofthosebadhabitsthatcausepollution ifso whatisit 5 whatcanwedotosaveearthfromdanger peoplepollutingtheatmospherewithchemicalsandtheburningandcuttingdownoftrees yes theydo peoplethrowawayasmanyastenbillionbottlesintheukeveryyear wecanbecome greenconsumers andonlybuyanduse environmentallyfriendly things savetheearthhowcanwedo workinpairstodebatehowtosaveourearth agroupdiscussthengivesomeideas bgroupdebatesagroup furtherconsolidation thegreenhouseconsumer thegreenhouseeffect destructionofrainforests badhabits saveearth summurizetheclass recitetheusefulwordsandphraseshomework 1 在危险中2 环境问题3 举止像 4 阻止 发生 5 月球表面6 以 格式 beindangerenvironmentalproblemsactlike 4keep from doing sth stop from doing sth prevent from doing sth 5 thesurfaceofthemoon6 intheformof 7 使 更差8 吸收有害气体9 扔掉10 大量的 11 总是 一路上12 为了13 环保的14 破坏环境 7 makesth worse8 takeinharmfulgases9 throwaway10 mountainsof11 alltheway12 inorderto13 environmentallyfriendly14 damagetheenvironment wheredothedifferenttypesofpollutioncomefrom howdotheyaffectourlives fillintheform theendofthereading morepractice usingenglish p41 42 readtheconversationbetweentimandpennyaboutfiresandanswerthefollowingquestions answerthequestions isthicksmogcoveringmostofsoutheastasia 2 whydon tfiremenputoutthesefires 3 aretreesveryimportanttotheworld 4 whatisthemostseriousproblem yes becausetheyaretoobig yes theyare thefireisdestroyingtheforests hundredsofthousandsoftreesonfire indonesia 2 farmersandcompaniesusefirestocleartheland 3 adroughtstartedmanymonthsago sothelandisverydry 4 theyareveryhardforpeople shealth 5 notouristsarecomingheretoindonesia 6 thefireisdestroyingtheforests bthinkaboutthreetypesofpollutionintheareaaroundyourschool trytomakesuggestionsforhowtheproblemscanbesolved discussitwithyourclass usingenglishtheindexofabook howgreenareyou workalonetoanswerthequestionnairebelow circleyouranswers addupyourscoreandthencheckthetotalwiththeanalysisbelow lookatthequestionsonpage42 howgreenareyou 1 doyourecyclea newspapers 1b tins 1c plasticbags 22 whenyoumakeashortjourney doyoua walkorcycle 3b gobycar 0c gobypublictransport 13 whattypeofbagsdoyouuseforshopping a reusable e g basket 3b reusedplastic1c newplastic0 4 howmanypiecesofelectricalequipmentareusedinyourkitchen a 10ormore0b 5to91c below525 doyoumakesurethatlightsandotherelectricalequipmentareswitchedoffwhennotneeded a nearlyalways2b seldom1c never0 6 doyouusedisposablechopsticks a often0b seldom1c never27 doyouusepapertissues a often0b seldom1c never28 doyouusuallytake a abath0b ashower1 thisisourreportonthe questionnaire theaveragescoreforourgroupwas thismeansthatwe wescoredthemostpointsforquestions wescoredthefewestpointsforquestions bproduceashortreportforyourgroup howgreenareyou 8 needtotryharder 7and8 3 5and6 writing p40 writingaletteraboutenvironmentalproblems 3steps listening p34 understandingthesequencesofevents language p35 37 teachinggoals教学目标 1 learntousewhyandbecausecorrectly whydoyoufeelsorryforthem becausetheydon thaveasmuchfunasido 2 learntouseas as correctly heisastallasme 3 learntocomparethingswithlike thesameasanddifferentfrom helookslikehisdad mybrother sjobisthesameasmydad s theorangesmellsdifferentfromtheapple whyandbecause 1 对 why 的问句我们常用 because 回答 但有时也用不定式回答 whydoweusecfcsalot becausetheyaresouseful whydidyougotofrance tostudyfrench 2 because是连词 所以后边跟从句becauseof后边加名词或者动名词短语hedidn tcometoworklatebecausehewasill hedidn tcometoworklatebecauseofhisillness note because不可以与so连用 因为我妈妈生病了 所以我上星期六呆在家 becausemymotherwasill istayedathomelastsaturday motherwasill soistayedathomelastsaturday 1 whynotdo whydon tyoudo意思是 为什么不呢 一般用在疑问句中 表示提建议 今天下午去野餐怎么样 2 whydon t didn tyou we dosth 是疑问的用法 为什么不 为什么不回答这些问题 疑问 whydon tyouanswerthisquestion 3 why 关系副词 放在thereason后面引导从句 thereasonwhy 从句 thereasonwhyhewaslatewasthathegotuplate 经常可省去先行词thereason或why whynothaveapicnicthisafternoon 2 adverbialclausesofreason 原因状语从句 区分 because since as nowthat for 1 hedidn tcometotheparty hehasalotofworktodo a becauseb ifc sod alsothat 2 theboydidn tgotoschool hewasill a becauseb ifc butd so 3 whyisouratmospherechanging wearepollutingitwithchemical aasbsincecford because4 theoldladydoesnotgooutinthewinter shefeelsitistoocold a forb asc sinced so a a d a 1 because since nowthat as通常用于引导原因状语从句 由for引导的并列句也可表示原因因为我喜欢 我才干 idoitbecauseilikeit 既然大家都来了 让我们开始开会吧 sinceeverybodyishere let sbeginourmeeting 既然你身体不好 你就不该熬夜 asyouareinpoorhealth youshouldnotstayuplate 现在既然大家都到了 咱们就设法做个决定吧 nowthatyou reallhere let strytoreachadecision 我请她留下来喝茶 因为我有事要告诉她 iaskedhertostaytohavetea forihadsomethingtotellher 2 thingstoremember because since as nowthat for 辨析1 because语气最重 表示的是直接原因回答why时只能用它 2 as since nowthat 一般不表示原因 而是从旁说明理由 译为 由于 既然 3 for被认为是复合句的并列连词 常用于推断 表示理由 a1 whyareyousohappythesedays whyshouldweprotectsmallanimals whywereyoulateforschoolthismorning whycouldn thefinishhishomeworkontime whydidshegotoworkbytaxitoday a2 whyshouldwebecausecarsandbusespollutetheair 2 whyshouldwebecausetheycanbeusedagainandagain 3 whyshouldwebecausebatteriescausepollution 4 whyshouldwebecauseashoweruseslesswaterthanabath 5 whyshouldwebecausemakingitusuallycausesairpollution 6 whyshouldwebecauseweonlyhaveoneearth 1 s1whydoyouthinkteenagerswithasisterorabrotherhavemorefun s2becausetheyalwayshavesomeonetotalkto 2 s1whydoyouthinkyou reaconfidentperson s2becauseibelieveinmyselfandiworkhard 3 s1whydoyouthinkyouknowmoreaboutcomputerthatyourdad s2becausehedoesn tusecomputersinhisjob andiusethemeverydayformyschoolwork 4 s1whydoyouthinkyouhavemoreopportunitiesthanoldergeneration s2becauseit smucheasierforourgenerationtogethighereducation 5 s1whydoyoulikeyourcupsomuch s2becauseiwonitinacompetition 6 s1whyistheblackleaderjacketsoimportanttoyou s2becauseiusedmymoneytobuyit b comparison b comparingthings 1 as 形容词 副词原级 as 表示双方情况 一模一样 myschoolbagisasheavyasyours arthurcalculatesasaccuratelyasacalculator 2 notso as 形容词 副词原级 as 表示双方情况 不 那么 一样 itisnotso ashotasyesterday ican tspeakenglishso asfastasanativespeaker 几个习惯用法 同级比较与比较级转换tomisnotastallasjohn 汤姆不如约翰高 tomisshorterthanjohn 汤姆比约翰矮 tomisnotascarefulasmary 汤姆不如玛丽认真 tomislesscarefulthanmary 汤姆没有玛丽认真 二 注意几个词组1 assoonas一 就 pleaseletusknowassoonasyouarriveinbeijing 一到北京 请通知我们一声 assoonasshegothome shebegancooking 她一到家就开始做饭 2 asmuch manyas多达 达到 之多 实际上等于 差不多someofthestonesevenweighasmuchasfifteentons 有些石块甚至重达15吨 thenumberofpeoplewholosthomesreachesasmanyas250 000 失去家园的人数多达25万 that sasmuchastosayhewasathief 那无异于说他曾是个小偷 3 aswellas和 同 既 又 不仅 而且 myparentsaswellasmyelderbrotherenjoymusic 我父母亲和我哥哥都喜欢音乐 heiscleveraswellashardworking 他不仅努力工作而且聪明 4 as aspossible onecan尽可能 尽 某人 所能pleasesweepthefloorascleanaspossible 请把地打扫得尽可能干净 i llgetbackassoonasican heisastallasme heisnotsotallasi heranasfastasi hedidn trunasfastasme b2 1 theblacksdonotthrowasmanytinsasthewhites 2 thewhitesthrowawayasmuchplasticasthebrowns 3 thebrownsthrowawayasmuchmetalastheblacks 4 thegreensdonotthrowasmuchglassasthewhites like 介词 像 thesameas differentfrom same用法小结 注意 1 theroomisthesameasthatoneinsize 用英语解释英语 thisroomisthesamesizeasthatone 2 myopinionisthesameasyours 用英语解释英语 ihavethesameopinionasyou same用法小结 小试牛刀1 他的梦想和我的一样 hisdreamis 2 深圳的植物和北京的不一样 theplantsinshenzhenaren t inbeijing 3 我和乔伊斯在一个办公室上班 iwork asjoycedoes 4 他头发的颜色和他妈妈的一样 hishairis thesameasmine thesameas