Unit4SectionB(1a1f)课件-人教版初中英语八年级上册

SectionB(1a~1f)Unit4

AmazingPlantsandAnimals掌握与蜜蜂相关的核心词汇：pollination（传粉）、ecosystem（生态系统）、extinction（灭绝）等；了解蜜蜂的生活习性、生态作用及保护措施等相关知识；理解并运用形容词比较级和最高级描述蜜蜂的重要性及面临的威胁。学习目标010203Whatarethebeesdoinginthevideo?Whatdoyouthinkwouldhappeniftherewerenobees?Lead-inLookatthetitleandthepicturesbelow.Guesswhatthetextisabout.beesinourlifebeeswork：pollinationPre-reading1aReadthetextandunderlinetheadjectivesthewriterusestodescribebees.hard-workingthemostimportantthemostinterestingthemostamazingWhile-reading1bReadthetextquickly,summarizeeachparagraph'smainidea,andunderlinekeysentences.ReadingTips快速扫读文本，寻找段落关键句，尝试总结大意有助于把握文章主旨Bees'connectionBees'pollinationBees'interestingtraits（特点）ProtectbeesQuickScanWhycan'twelivewithoutbees?Para1Bees'connectionPara2

Bees'pollinationPara3

Bees'interestingtraitsPara4Protectbees?????????泛读读大意Let’sanalyzeAnswerthereadingquestions.细节理解题1.Howmanyflowersdobeesoftenvisitononetrip?A.10to20flowers.B.30to40flowers.C.50to100flowers.D.Over100flowers.Beesareveryhard-workinganimals,andtheirgreatestworkispollination.Ononetrip,theyoftenvisit50to100flowers.

Astheyflyfromoneflowertoanother,theytakepollenwiththem.Thisactionhelpsplantsgrow.Infact,withouttheirwork,about80percentoftheplantsintheworldcannotgrow.Forthisreason,manyscientistsbelievethatbeesarethemostimportantanimalsonthisplanet.DetailedReading词义推测题2.Theunderlinedword“honeycomb”inthethirdparagraphprobablymeans“______”.A.aplacewherebeesstorehoneyB.thewaybeescommunicateC.thefoodthatbeesmakeD.thehomeforbeestosleepBeesarealsooneofthemostinterestinganimalsintheworld.Forexample,theyworkhardtogethertomaketheirhomes.Inordertostorehoney,theycreatehoneycombs.Anotherinterestingthingaboutbeesishowtheycommunicate.Whenabeefindsnewfood,itusesadancetotelltheotherswhereandhowfarawaythefoodis.inorderto为了...，表目的DetailedReading推理判断题3.Whatcanweinferfromthelastparagraph?A.Beesonlycommunicatebydancing.B.Withoutbees,peoplecanstilllivewell.C.Thenumberofbeesisincreasingtheseyears.D.Protectingbeesisveryimportantfortheecosystem.Beesplayanimportantpartintheecosystemofourplanet.However,thenumberofbeesisdropping,andscientistsareworried.Beesneedourhelp,andthereisalotwecando.Thinkaboutwhatyoucandotoprotectoneofthemostamazinganimalsonearth.however然而，表转折DetailedReadingWhycan'twelivewithoutbees?Para1Bees'connectionPara2

Bees'pollinationPara3

Bees'interestingtraitsPara4Protectbees人、动植物相互依存蜜蜂特性：勤劳，核心工作是授粉重要性：全球约80%植物生长依赖群体协作

储存方式交流方式生态地位现状问题行动呼吁精读读细节Let’sanalyze

While-reading(Carefulreading)Readagainandcompletethemindmapwiththeinformationfromthetext.Bees●theirgreatestwork:_________●visit:________________________●help:___________●theirnumberis:________●_____________

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_______________importanceprobleminterestingfactspollination50to100flowersononetripplantsgrowdroppingTheyworkhardtogethertomaketheirhomes.Theycreatehoneycombstostorehoney.Theyuseadancetocommunicatewhereandhowfarawaythefoodiswhentheyfindnewfood.Post-reading1cDiscussthequestions.1.Canyougiveanothertitleforthetext?2.Whatotherinterestingfactsdoyouknowaboutbees?3.Whatdoyouknowabouttheconnectionbetweenhumansandotherinsects,suchasantsandbutterflies?/ˈtaɪtl/n.标题；题目；名称

/ˈhjuːmən/n.人adj.人的；人类的/ænt/n.蚂蚁

1dPost-reading1.Canyougiveanothertitleforthetext?TheAmazingWorldofBeesPost-reading2.Whatotherinterestingfactsdoyouknowaboutbees?Beeshaveawell-organisedsociallife.Inabeehive(蜂房),thequeenbeecanliveformanyyearsandlayaboutonethousandeggsdaily.Femaleworkerbeesdodifferentjobsastheygrowolder.Atfirst,youngworkerbeesare"nursebeesTheytakecareoftheyoungbees.Later,theybecome“foragerbees(觅食蜂)”Thentheygoouttocollectnectar(花蜜),pollen,waterandgum(树胶).Beescansmellveryweli.Theycanknowthesmelloftheirownhive.Theycanalsotelldifferentflowersbytheirsmell.Thishelpsthemfindthebestnectarandpollen.Post-reading3.Whatdoyouknowabouttheconnectionbetweenhumansandotherinsects,suchasantsandbutterflies?Antsdigtunnels.Thismakesthesoilgetair.ithelpsplantrootsgetoxygen.ltisgoodforthecropsweeat.Butterfieshelpwithpollination.Whentheydrinknectar,theymovepollenaround.Thishelpsplantsmakenewplants.Somefruit-bearingplantsneedtheirhelptogrowthefruitsweeat.Post-readingImagineyouarethewriter.Writeonemoreparagraphaboutbeesandaddittothetext.Therearemanywayswecando.

First,wecanplantflowerslikesunflowers(向日葵)inyourgarden.Second,don’tusepesticides(杀虫剂)–trynaturalways.Third,putashallowdishwithwaterandpebbles(鹅卵石)forbeestodrink.Fourth,Buyhoneyfromlocalbeekeepers.Lastbutnotleast,tellyourclasswhybeesmatter.Smallthingshelpbeesalot!solution1eHowdoyouunderstandtheconnectionbetweenpeople,plants,andanimals?Thinkofsomeexamplesandthensharethemwithapartner.A:Weallknowpeopleandnatureareconnected.Butcanyougivemeanexampleofhowtheyareconnected?B:Sure.IvisitedasmalltowninGuangdongonce.Therearemanylargetreesinthetown.Theyarehometomanybirds.Alotoftouristscometoseethetreesandthebirds…有……栖息；是……的家乡givesb.anexample给某人举个例子1fHowdoyouunderstandtheconnectionbetweenpeople,plants,andanimals?Thinkofsomeexamplesandthensharethemwithapartner.A:Doyouthinkpeople,plants,andanimalsareconnected?B:Yes,Ido!Theyneedeachotheralot.Forexample,plantsmakefoodwithsunlight.Thenanimalslikecows(牛)eatplantstogrow.A:Ohright!Andpeopleeatcowsorplantsforenergy.That’sagoodchain.B:There’sanotherexample.Bees(蜜蜂)drinknectar(花蜜)fromflowers.Theycarrypollen(花粉)tohelpplantsmakeseeds.A:Soplantscangrowfruitsandvegetablesforus.Andbeesmakehoney(蜂蜜)thatweeattoo!B:Exactly.Ifonepartishurt,othersfeelit.Like,noplantsmeanshungryanimals—andpeoplewon’thaveenoughfood.A:That’strue.Wemustprotectallofthem!1f1.WeCan'tLiveWithoutBees.没有蜜蜂我们无法生存。without【介词】没有;缺乏，其后可跟名词、人称代词宾格或动词-ing形式,用来表示伴随或假设的情况。其反义词为with(具有;带有)。withoutdoingsth没有做某事e.g.Fishcan'tlivewithoutwater.没有水，鱼就活不了。e.g.Helefttheroomwithoutsayingaword.

他一句话也没说就离开了房间。

Languagepoints【拓展】一般情况下,含有without的句子可以和含有if...not...结构的句子进行同义转换。e.g.

Icouldn'tfinishtheworkwithoutyourhelp=Ifyoudidn'thelpme,Icouldn'tfinishthework.

没有你的帮助，我就完不成这项工作。2.Imagineyougotothesupermarketinyourarea,buttherearealmostnofruits,vegetables,honey,milk,eggs,orchocolate.想象一下,你去当地的超市，但是那里几乎没有水果、蔬菜、蜂蜜、牛奶、鸡蛋或巧克力。(1)imagine【及物动词】想象;猜想，其后可接名词、代词、动词-ing形式或从句作宾语。imagine(sb)doingsth想象(某人)做某事e.g.Imaginelifewithouthotwater.想象一下没有热水的生活

。(2)honey①【不可数名词】蜂蜜e.g.Iliketoputsomehoneyinmytea.我喜欢在茶里加些蜂蜜。②【名词】(爱称)亲爱的e.g.Honey,comehereandhelpmewiththehousework.

亲爱的,过来帮我做家务。3.Disappointed?失望?disappointed【形容词】失望的;沮丧的，常用来说明人的一种感受,多在句中作表语。bedisappointedwitb/in..对…感到失望e.g.Don'tbedisappointedwithyourself.别对自己失望。【拓展】①disappointing【形容词】令人失望的，通常用来说明事物所

具有的特征，可在句中作表语或定语。

②disappoint【动词】(使)失望e.g.Theresultdisappointedhim.结果使他失望。4.Atthismomentyourealizepeople,plants,andanimalsareallconnected.这时你就会意识到，人类、植物和动物都是相联系的。connected【形容词】连接的;相关的，beconnectedwith/to.与……相连;与…有关联e.g.Foodiscloselyconnectedwithitslocalculture.

食物和当地的文化密切相关。【拓展】

①connect【及物动词】关联;连接，connect...with/to..把……和…连接/联系起来e.g.ArailwayconnectsBeijingwithShanghai.

一条铁路连接北京和上海。②connection【名词】连接;联系;关系e.g.There'saconnectionbetweenpollutionandthedeathoftrees.

污染和树木的死亡之间有关系。5.Infact,withouttheirwork,about80percentoftheplantsintheworldcannotgrow.事实上，如果没有它们的工作,世界上大约百分之八十的植物都无法生长。(1)infact确切地说;实际上,

其中fact是名词,意为“现实;事实”。e.g.Infact,sheistalentedinmusic.事实上,她有音乐夭赋。e.g.Fewpeopleknowthefact.知道这个事实的人不多。(2)percent(=percent)①【名词】百分之……，常用于“基数词+percent+of”结构。“基数词+percent+of+名词/代词”在句中作主语时,谓语动词的单复数形式要根据of后的名词或代词的情况而定。

若名词或代词为复数意义,谓语动词用复数形式;若名词为不可数名词、单数名词或代词表示单数意义,谓语动词则用第三人称单数形式。e.g.Seventypercentoftheapples

arered.

百分之七十的苹果是红的。e.g.Twentypercentofthewater

iscoveredwithice.

百分之二十的水被冰覆盖。

②【形容词&副词】每一百中

a15percentdiscount15%的折扣

e.g.Salesareup5pe