人教版八上英语Unit 4《Section B》课件

SectionBUnit4AmazingPlantsandAnimals1aLookatthetitleandthepicturesbelow.Guesswhatthetextisabout.Ithinkthetextisaboutbeesandhowimportanttheyaretous.1bReadthetextandunderlinetheadjectivesthewriterusestodescribebees.pollination

honeycombWeCan’tLiveWithoutBeesImagineyougotothesupermarketinyourarea,buttherearealmostnofruits,vegetables,honey,milk,eggs,orchocolate.Howwouldyoufeel?Disappointed?Angry?Sad?Atthismomentyourealizepeople,plants,andanimalsareallconnected.Weneedeachothertolive,andbeesareoneofthebestexamplesofthisconnection.~~~①[U]n.蜂蜜②[C]n.亲爱的Beesareveryhard-workinganimals,andtheirgreatestworkispollination.Ononetrip,theyoftenvisit50to100flowers.Astheyflyfromoneflowertoanother,theytakepollenwiththem.Thisactionhelpsplantsgrow.Infact,withouttheirwork,about80percentoftheplantsintheworldcannotgrow.Forthisreason,manyscientistsbelievethatbeesarethemostimportantanimalsonthisplanet.~~引导时间状语从句Beesarealsooneofthemostinterestinganimalsintheworld.Forexample,theyworkhardtogethertomaketheirhomes.Inordertostorehoney,theycreatehoneycombs.Anotherinterestingthingaboutbeesishowtheycommunicate.Whenabeefindsnewfood,itusesadancetotelltheotherswhereandhowfarawaythefoodis.

~~~引导表语从句~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~长难句分析：这是一个主从复合句，主句是itusesadancetotelltheothers...，Whenabeefindsnewfood是时间状语从句，whereandhowfarawaythefoodis是宾语从句，作tell的直接宾语。Beesplayanimportantpartinecosystemofourplanet.However,thenumberofbeesisdropping,andscientistsareworried.Beesneedourhelp,andthereisalotwecando.Thinkaboutwhatyoucandotoprotectoneofthemostamazinganimalsonearth.(very)hard-working;mostimportant;mostinteresting;mostamazing~~~~~~~~~~~~~在……中起重要作用~~~~~~~~thenumberof...“……的数量”，后接可数名词复数，谓语动词用单数。anumberof...“许多……”，后接可数名词复数，谓语动词用复数。思考：Whataretheimportantrolesthatbeesplayintheecosystem?Beeshelpplantsgrowbypollinatingthem,andtheyalsomakehoneywhichisgoodforus.（答案不唯一）从教材语篇1b挖中考设问[新考法写作意图]Whatisthepurposeofwritingthisarticle?A.Totellreadersbeesarehard-working.B.Toshowreadersbeesareinteresting.C.Toshowreadersbeesaretireless.D.Toremindreaderstoprotectbees.D1cReadagainandcompletethemindmapwiththeinformationfromthetext.pollinationBeesimportance/ɪm'pɔːtns/·theirgreatestwork:__________________·visit_________________________·help__________________problem·theirnumberis__________________50to100flowersononetripplantsgrowdroppingBeesinterestingfacts·____________________________________________________________________________________________________________·____________________________________________________________________________________________________________workhardtogethertomakehomesandcreatehoneycombstostorehoneycommunicateusingdances.1dDiscussthequestions.1.Canyougiveanothertitle/'taɪtl/forthetext?2.Whatotherinterestingfactsdoyouknowaboutbees?Bees—AnImportantPartinEcosystem/ThemostImportantAnimalonthePlanet（答案不唯一）Aqueenbeecanlayupto2,000eggsinjustoneday!Ifabeestingsyou,itwilldie.Butdon’tworry,mostbeeswon’tstingpeopleunlesstheyfeelthreatened.（答案不唯一）3.Whatdoyouknowabouttheconnectionbetweenhumansandotherinsects,suchasantsandbutterflies?Antsareveryorganizedandworktogetherasateam,whichcanteachusaboutcooperationandteamwork.Butterflieshelpplantsgrowbypollinatingthem,whichisimportantforourfoodsupply.（答案不唯一）1eImagineyouarethewriter.Writeonemoreparagraphaboutbeesandaddittothetext.略1fHowdoyouunderstandtheconnectionbetweenpeople,plants,andanimals?Thinkofsomeexamplesandthensharethemwithapartner.A:Weallknowpeopleandnatureareconnected.Butcanyougivemeanexampleofhowtheyareconnected?B:Sure.IvisitedasmalltowninGuangdongonce.Therearemanylargetreesinthetown.Theyarehometomanybirds.Alotoftouristscometoseethetreesandthebirds...略~~~~~~~~~~~~givesbanexampleof...给某人一个……的例子VocabularyinUse2aCircletheoddones.Thengiveyourreasons.1.habit height size weight2.joy happiness/'hæpinəs/ fun enjoy3.angry disappointed smart sad4.appear look seem watch5.honey milk juice breadReasons:略2bAddtheendings-ance,-(t)ion,-ness,and–ity

toformnouns.Useyourdictionary.1.act___________ 2.good___________3.kind___________ 4.appear

____________5.real___________ 6.imagine

_____________7.connect___________ 8.popular___________9.communicate______________ 10.important___________actiongoodnesskindnessappearancerealityimaginationconnectionpopularitycommunicationimportance2cCompletethesentenceswiththecorrectformsofthewordsinthebox.appeardisappointimaginestoreweigh1.Ifelt____________whenmyfavouriteflowersdied.2.Aftertherain,somemushrooms/'mʌʃrʊmz/_________inthegarden.3.Inmyhometown,peopleoftenusebamboobasketsto

_______

food.4.Whatdidyouputinyourluggage?It__________aton/tʌn/.5.Ican’t__________

mylifewithoutmypets.Theymeanalottome.disappointedappearedstoreweighsimagine~~~~~~~~~meanalottosb对某人来说意义重大2dCompletethepassagewiththecorrectformsofthewordsinthebox.howeverimportantlandplanetprotectYoumaynotrealizeit,butfrogsplayanimportantrole/rəʊl/inour_________ecosystem.Thesmallestfrogsareaboutthesizeofapea/piː/,whilelargeronescangrowasbigasahumanhand.Manypeopleknowthatfrogshelpto_________farmsbyeatinginsects._________,noteveryoneunderstandstheir___________innature.Frogscanliveon______andinwater.Becauseofthis,theyarepopularsubjectsinstudiesonclimate/'klaɪmət/changeandtheecosystem.planet’sprotectHoweverimportanceland~~~~as...as...像……一样……3aReadthetextandcompletethetable.TheBlueWhaleThebluewhaleisthelargestandheaviestanimalonearth.Itcanweighasmuchas200tons.Manypeoplelikewatchingbluewhalesswim,andtheythinkitisoneofthemostbeautifulthingstosee.BluewhalesliveinalloceansexcepttheArcticOcean.Theyeatalot,buttheyeatsomeofthetiniestanimalsintheocean.Abluewhalecaneataroundfourtonsoftheseaday.~~~~副词，意为“大约”，相当于about。Bluewhalescanliveupto90years.Whenabluewhalediesatsea,itbecomesfoodformanykindsofanimalslivinginandaroundthesea.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~长难句分析：这是一个含有When引导的时间状语从句的主从复合句，主句主语是it，becomes是系动词，food作表语，formanykindsofanimals是介词短语作food的后置定语，livinginandaroundthesea是现在分词短语作animals的后置定语。Thisfoodlastsforoverayearandithelpstocreatealivelyandhealthyecosystem.Bluewhalesplayanimportantroleinourworld,sowemustprotectthem.BluewhalefactsWeightWheretheyliveFoodHowlongtheyliveImportanceinnatureasmuchas200tonsinalloceans,excepttheArcticOceansomeofthetiniestanimalsintheocean;aroundfourtonsadayliveupto90yearsprovidealotoffoodaftertheydie;playanimportantroleinourworld思考：Whataretheimportantrolesthatthebluewhaleplaysintheecosystem?Thebluewhaleplaysanimportantroleintheecosystembyeatingalargenumberofkrill,whichhelpstobalancethemarinefoodchain.（答案不唯一）3bImagineyouareabluewhale.Usethefirstpersontorewritethefirstparagraph.（答案不唯一）Helloeveryone!MynameisBillytheBlueWhale.Iam______I’mheavy,butI_____________________________________.Ilivein____________________________________________Icaneat___________________________________________._______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Helloeveryone!MynameisBillytheBlueWhale.Iamthelargestanimalonearth.I’mheavy,butIloveswimming.Iliveintheocean,whereIcanfreelymovearoundandexplore.Icaneataroundfourtonsoffoodinonedaytokeepmyhugebodystrongandhealthy.（答案不唯一）3cCompleteyourpassageaboutthebluewhalebasedonthetextin3a.略*ProjectMakeaposteraboutaplantorananimal4aWorkingroups.Chooseorcreatethetitleofyourposter.TheStrangestAnimal TheCutestAnimalTheMostAmazingPlant TheMostBeautifulAnimalTheOldestTree TheMostPopularHousePlant4bCollectpicturesandfindoutinformationabouttheplantoranimalthatyouchose.1.Whatisitsname?2.Wheredoesitlive/grow?3.Whydidyouchooseit?4.Whataresomeinterestingfactsaboutit?4cMakeyourposter.4dPresentyourposterinclass.Thenvoteforthebestone.Reflecting1.Whatamazingplantsandanimalsdidyoulearnaboutintheunit?2.Whendoyouusethesuperlativeformsofadjectivesandadverbs?3.Canyoudescribesomeamazingplantsoranimalsintheworld?4.Howareweconnectedwithplantsandanimals?Takecareofanimalsandplantsbecausewecannotlivewithoutthem.1connect/kə'nekt/v.关联；连接（教材P36）(观察)·Thebridgeconnectsthetwocities.这座桥连接了两座城市。·Whenthinkingaboutproblems,weshouldconnecttheorywithpractice.思考问题时，我们应当把理论和实践联系起来。探究一核心单词·TherailwaylineconnectsWuhantoShanghai.这条铁路线把武汉和上海连接起来。·Thiswireconnectswiththatone.这根电线与那根相连。·Hewasconnectedwiththecrime.他与那起犯罪有关。·TheInternetprovidesaconnectionbetweenpeopleallovertheworld.互联网为全世界的人们提供了联系。归纳拓展（1）connectv.关联；连接connect...with/to/and...把……和……连接/联系起来connectwith/to...与……连接/联系；与……建立良好关系（2）connectedadj.连接的；相关的beconnectedwith/to与……相连；与……有关联（3）connectionn.连接；联系Internetconnection网络连接2without/wɪ'ðaʊt/prep.没有；缺乏（教材P36）(观察)·Humanscan’tmakeprogresswithoutdreams.人没有梦想就不能进步。·Heenteredtheroomwithoutknocking.他没敲门就进了房间。·Actionwithoutaplanisashipwithoutarudder.行动没有计划，犹如船没有舵。[谚语]·Ican’tfinishtheworkwithoutyourhelp.=Ifyoudon’thelpme,Ican’tfinishthework.没有你的帮助，我无法完成这项工作。归纳拓展withoutprep.没有；缺乏后接名词、代词或动词的-ing形式作宾语，常用来表示伴随或假设的情况。一般情况下，含有without的句子可以与if...not...结构的句子进行同义句转换。3imagine/ɪ'mædʒɪn/v.想象；猜想（教材P36）(观察)·

Icanimagineabeautifulsunsetonthebeach.我可以想象海滩上美丽的日落。·Peoplecan’timaginelivinginsuchaplace.人们无法想象生活在这样一个地方。·Sheimaginesherselfbecomingafamoussinger.她想象自己成为一名著名的歌手。·Canyouimaginewhatwillhappennext?你能想象出下一步会发生什么吗？·Herimaginationmakesherdaymorecolourful.她的想象力让她的生活更加丰富多彩。归纳拓展（1）imaginev.想象；猜想imagine+名词/代词想象……imagine(sb)doingsth想象（某人）做某事imagine+从句想象……（2）imaginationn.想象力；想象4disappointed/dɪsə'pɔɪntɪd/adj.失望的；沮丧的（教材P36）(观察)·Shefeltdisappointedafterlosingthegame.比赛输了之后，她感到很沮丧。·Ifyoudon’tpracticehard,youwilldisappointyourcoachandteammates.如果你不努力训练，你会让你的教练和队友失望。·Themoviewasdisappointingbecauseitwasboring.这部电影令人失望，因为它很无聊。·Tomydisappointment,theplaygroundwasclosedformaintenance.令我失望的是，操场因为维修而关闭了。归纳拓展（1）disappointedadj.失望的；沮丧的（2）disappointv.使失望disappointsb=letsbdown=makesbdisappointed使某人失望（3）disappointingadj.令人失望的（4）disappointmentn.失望toone’sdisappointment令某人失望的是5action/'ækʃn/n.行动；行为（教材P36）(观察)·Actionsspeaklouderthanwords.行动胜于空谈。[谚语]·Weneedtotakeactiontoprotecttheenvironment.我们需要采取行动来保护环境。·Youcanseehowthemachineworksinactionatthesciencemuseum.在科技馆你能看到这台机器如何运转。·Hefinallyputhisgreatideaintoactionlastmonth.上个月他终于把自己的好想法付诸实践了。·Hewhodoesnotactdoesnotachieve.—TheAdventuresofTomSawyer.不行动的人永远不会有所成就。—《汤姆·索亚历险记》归纳拓展

（1）actionn.行动；行为由act（v.行动；扮演）+-ion（名词后缀）构成takeaction(todosth)采取行动（做某事）inaction在运转；在行动中putsthintoaction把……付诸实践（把想法、计划变成实际行动）（2）activeadj.活跃的；积极的；主动的（3）activityn.活动；行动（4）actorn.男演员actressn.女演员6percent/pə'sent/n.百分之……adj.&adv.每一百中（教材P36）(观察)·Fiftypercentofthestudentsinourclasslikeplayingfootball.我们班50%的学生喜欢踢足球。·Twentypercentofthewaterhasrunout.20%的水耗光了。·Thisjuiceis100percentnatural.这种果汁是100%天然的。·Thepopulationgrew2percentlastyear.去年人口增长了2%。归纳拓展percent（=percent）n.百分之……adj.&adv.每一百中“基数词+percent+of+名词或代词”结构作主语时，谓语动词的单复数取决于结构中的名词或代词的单复数。7store/stɔː(r)/v.贮存；存储

n.百货商店；商店（教材P36）(观察)·TheWhitesstorealargeamountoffoodinthebasement.怀特一家在地下室里贮存了大量的食物。·MumtoldmetostoreawaythebooksontheshelfafterIfinishedreading.妈妈告诉我读完书后要把它们收好在书架上。·Squirrelsstoreupnutsforthecoldwinter.松鼠会囤积坚果过冬。·Wewenttothetoystoretobuyanewpuzzle.我们去玩具商店买了一个新的拼图。归纳拓展（1）storev.贮存；存储storeaway贮存起来storeup储备；囤积（2）storen.百货商店；商店（=shop）gotothestore去商店 shoestore鞋店clothesstore服装店 fruitstore水果店8communicate/kə'mjuːnɪkeɪt/v.交流；沟通（教材P36）(观察)·Wecommunicatewithourfriendsbytalkingandsharingstories.我们通过聊天和分享故事来与朋友交流。·WhenIhavequestions,Icommunicatethemtomyteacher.当我有问题时，我会向老师表达出来。·Maryoftenhascommunicationwithherclassmatesafterclasstodiscussvarioustopics.玛丽经常在课后和同学们交流，讨论各种话题。·Bodylanguageisanimportantpartofwhatweconveyincommunication.肢体语言是我们在交流中所传达内容的重要组成部分。归纳拓展（1）communicatevi.交流；沟通communicatewithsb与某人交流/沟通（2）communicatevt.

传达；传递（3）communicationn.交流；沟通havecommunicationwithsb与某人交流incommunication在交流中，在交际中9protect/prə'tekt/v.保护；防护（教材P36）(观察)·Wewearmaskstoprotectourselvesagainstthecoldwindinwinter.冬天我们戴口罩保护自己免受寒风侵袭。·Theumbrellacanprotectusfromgettingwetintherain.雨伞能保护我们在雨中不被淋湿。·Environmentalprotectioniseveryone’sresponsibility.环境保护是每个人的责任。·Thisprotectivecovercankeepyourphonefrombeingscratched.这个保护壳能防止你的手机被刮花。归纳拓展（1）protectv.保护；防护protect(sb/sth)againststh保护（某人/某事）免受某事protectsb/sthfrom(doing)sth保护（某人/某物）免于（做）某事（2）protection[U]n.保护；防护（3）protectiveadj.保护的；防护的10importance/ɪm'pɔːtns/n.重要性（教材P37）(观察)·LearningEnglishisofgreatimportancetomyfuture.学习英语对我的未来非常重要。·Weshouldrealizetheimportanceoftime.我们应该意识到时间的重要性。·It’simportanttobekindtoothers.对别人友好很重要。归纳拓展（1）importancen.重要性of...importance=important重要的theimportanceof...……的重要性（2）importance是由“important（adj.重要的）+-ce（名词后缀，表“性质、状态、品质”）”构成。类似的词还有：confident（adj.自信的）→confidence（n.自信；信任）convenient（adj.方便的）→convenience（n.方便；便利）11human/'hjuːmən/n.人adj.人的；人类的（教材P37）(观察)·Everyhumanneedswatertosurvive.每个人都需要水来生存。·Humanshavebigbrainsthathelpthemthinkandlearn.人类有大脑，可以帮助他们思考和学习。·Humaneyescanseealotofdifferentcolours

andshapes.人的眼睛可以看到很多不同的颜色和形状。·Humanbeingscommunicatethroughlanguageandgestures.人类通过语言和手势进行交流。·Mancannotlivewithoutwater.人类没有水不能生存。·Thetallmanoverthereismymathteacher.那边那个高个子男人是我的数学老师。辨析：human,humanbeing与manhuman①可数名词，泛指“人类”，复数形式为humans，口语、书面语通用；②形容词，“人的；人类的”，只能用于名词前作定语。human

being可数名词，强调与动物、机器的区别，概念严谨，单数形式ahumanbeing，复数为human

beings，适用于正式书面语。man可数名词①表“人类”，正式表达，多用于文学/谚语，无复数形式；②表“成年男性”，常用表达，复数形式men。12ton/tʌn/n.吨（教材P38）(观察)·Anelephantweighsaboutseveraltons.一头大象重达约几吨。·Thistruckcancarryupto10tonsofcoal.这辆卡车最多能装10吨煤。·Farmersharvesttonsofcropseveryyear.农民们每年收获大量的农作物。归纳拓展tonn.吨tonsof“大量，许多”，后接不可数名词或可数名词复数，相当于alotof或lotsof。13except/ɪk'sept/prep.除……之外；除了（教材P39）(观察)·EveryoneinourclasswenttothecinemayesterdayexceptTom.昨天，除了汤姆以外，我们班的每个人都去看了电影。·Exceptforoneoldlady,thebuswasempty.公共汽车上要不是坐了一位老太太就是空的。·Ihavesomeotherfriendsbesidesyouandyourfamily.除了你和你的家人之外，我还有其他一些朋友。·Noonebutmepassedtheexamyesterday.昨天除了我以外没人通过考试。归纳拓展（1）exceptprep.除……之外；除了其后可接名词、代词等，表示某人或某物不包括在某一范围之内，常与always，never，everyone，everything等词连用。（2）exceptconj.除了；只是辨析:except,exceptfor,besides与butexcept表示“除了……之外”，将其后的内容排除在外，表达一种排除关系，后面可以接that，what，when等引导的从句。exceptfor表示“除……之外”，它引出一个与前面或后面的词相对立的原因或者事例。besides表示“除了……之外（还）”，将其后的内容包含在内，表达一种累加关系。butbut的意思与except接近，它主要与某些不定代词，如nothing，all，anything，no

one，anyone等连用。14tiny/'taɪni/adj.极小的;微小的（教材P39）(观察)·Ifoundatinystoneinthegarden.我在花园里找到了一块小石头。·Smallvillagesdotthecountryside.小村庄星罗棋布于乡间。·Thelittlegirllovestodance.这个小女孩喜欢跳舞。辨析:tiny,small与littletiny都可作形容词，表示“小”用于描述物体的尺寸非常小，给人一种小巧、精致甚至可爱的感觉。它侧重于强调物体在尺寸上的微小性。small用于描述物体的尺寸、数量或程度上的小。是一个相对中性的词，没有tiny那么强烈的微小感，适用范围更广。little用于某些抽象概念上的“小”，如“little

progress”（进步很小）。它侧重于强调数量或程度上的不足。15lively/'laɪvli/adj.精力充沛的；生机勃勃的（教材P39）(观察)·Sheissuchalivelygirlthatwealllikeher.她是个如此活泼的女孩，以至于我们都喜欢她。·Ourteachergaveusalivelydescriptionoftheevent.对于这个事件，我们的老师给我们做了生动的描述。·Thecolouroftheworksislively.这些作品的色彩很鲜艳。·Areyourgrandparentsstillalive?你的祖父母还健在吗？·Bothplantsandanimalsarelivingthings.动植物都是生物。·Heboughtsomelivefish.他买了几条活鱼。辨析:lively,alive,living与livelively“精力充沛的；生机勃勃的；（色彩）鲜艳的”，修饰人或物，常作定语或表语。alive“活着的”，反义词dead。修饰人或动植物，常作表语或补语。living“活着的”，修饰人或物，常作定语，作表语时相当于alive。live“活的；现场直播的（读作/laɪv/）”，修饰人或动植物，一般作前置定语。一语辨异Atthelivepetshow,thelivelyguideshowedusalllivingpets,butwewonderediftheweakrabbitwasstillalive.在这场现场直播的宠物展上，活泼热情的讲解员带我们看了所有活的宠物，但我们都想知道那只虚弱的兔子是否还活着。1infact确切地说；实际上（教材P36）(观察)·Thebookisnotboringatall.Infact,it’squiteinteresting.这本书一点也不无聊，事实上，它相当有趣。·Thefactisthatheisnotcomingtothepartytonight.事实是他今晚不会来参加聚会。探究二核心短语归纳拓展infact确切地说，实际上用于修正、引出相反的意见或进行对比等。其中fact作名词，意为“现实；事实”。2forthisreason出于这个原因（教材P36）(观察)·It’srainingoutside.Forthisreason,youhavetostayathome.外面在下雨，由于这个原因，你得待在家里。·Forsomereason,thecardidn’tstartthismorning.出于某种原因，今天早上汽车发动