新人教八年级上英语课件Unit 4 Amazing Plants and Animals Section B (3a-Reflecting)

Unit4AmazingPlantsandAnimalsSectionBHowareplantsandanimalsconnectedwithus?Reading&Writing3a-3c+Project4a-4d+Reflecting01020304教学目标能够了解蓝鲸的一些内容；通过分析第一段的由第一人称改为第三人称的内容，了解到改写的注意点。能够客观冷静地表达个人观点；通过观察，分析，总结等多种手段，深化发散性与总结性思维。引导学生了解生物蓝鲸对于生态系统的重要性，从而进一步了解动植物对于生态系统的重要性。能够通过各种写作活动，锻炼自己的写作能力；同时归纳总结各种议论文的写作要点。教学重难点0102能通过阅读和写作环节，巩固有关动物方面的相关知识；能够通过阅读及写作的练习，锻炼和提高阅读和写作能力。如何培养学生的想象力、创造力及发散性思维；如何引导学生意识到动植物在生态系统中的重要性。Reading&Writing

1a-1dSectionB01Watchthevideo

1Lead-inThinkandsayWhatdoesthisvideotalkabout?Watchthevideo

2Pre-readingIntroductionWhatdoyouknowaboutthebluewhale?marinemammalbiggestanimalendangeredspeciesPlace:deepoceanFood:krill（磷虾）...

3While-readingPart1.

Readthetextandcompletethetable.3aHowmanyparagraphsarethereinthisarticle?TwoBluewhalefactsWeightWheretheyliveFoodHowlongtheyliveRoleinecosystemItcanweighasmuchas200tons.InalloceansexcepttheArcticOcean.Someofthetiniestanimalsintheocean,aroundfourtonsofthemaday.Upto90years.Whenabluewhalediesatsea,itbecomesfoodformanykindsofanimalslivinginandaroundthesea,lastingforoverayearandhelpingtocreatealivelyandhealthyecosystem.Part2.ReadandlearnThebluewhaleisthelargestandheaviestanimalonearth.Itcanweighasmuchas200tons.Manypeoplelikewatchingbluewhalesswim,andtheythinkitisoneofthemostbeautifulthingstosee.BluewhalesliveinalloceansexcepttheArcticOcean.Theyeatalot,buttheyeatsomeofthetiniestanimalsintheocean.Abluewhalecaneataroundfourtonsoftheseaday.Bluewhalescanliveupto90years.Whenabluewhalediesatsea,itbecomesfoodformanykindsofanimalslivinginandaroundthesea.Thisfoodlastsforoverayearandithelpstocreatealivelyandhealthyecosystem.Bluewhalesplayanimportantroleinourworld,sowemustprotectthem.在地球上多达，达到……之多/ˈəʊʃn/n.大海；海洋/ɪkˈsept/prep.除……之外；除了tiny/ˈtaɪni/adj.极小的；微小的liveupto达到；符合lively/ˈlaɪvli/adj.精力充沛的；生机勃勃的扮演一个重要的角色Part3.

Imagineyouareabluewhale.Usethefirstpersontorewritethefirstparagraph.3bHelloeveryone!MynameisBillytheBlueWhale.Iam_____________________________________________________________________________________________________

I’mheavy,butIlove________________________________________________________

_________________________________________________________________________.Ilivein__________________________________________________________________.

Myfavouritefoodis_________________________________________________________Icaneat__________________________________________________________________.thelargestandheaviestanimalonearth.Myweightisasmuchas200tons.swimmingintheocean.Manypeoplelikewatchingmeswim,andtheythinkIamoneofthemostbeautifulthingstoseealloceansexcepttheArcticOcean.someofthetiniestanimalsintheocean.aroundfourtonsofthemaday.

4Post-reading(Writing)Part1.Completeyourpassageaboutthebluewhalebasedonthetextin3a.3c写作指导

文本体裁话题分析要求写完成段落的改写，主要改写内容为3a第二段的内容，涉及到蓝鲸的寿命和对生态环境的重要性等内容。本文将第三人称的段落内容，改写为第一人称的段落内容。分析原文章属于介绍类文章，改写后，还是自身特性介绍，因此是说明文。人称时态以第一人称为主；以一般现在时为主。ObserveandthinkWhatshouldwemainlypayattentiontowhenrewritinganarticle?人称:由第三人称变成第一人称内容要点:要点不能省略或者遗漏。语言:个别句子需要变化结构weightlivingareafoodamountoffoodeatenpreferenceHowtousethefirstpersontorewritethesecondparagraph?pointslifespanrole/functionimportanceWriteyourarticleaccordingtotheinformationmentionedabove.Payattentiontoyourspellingandstructure.Becareful!Now,youcanexchangeyourwritingswithyourpartnerstocheckeachother’swriting.ChecklistSelf-evaluationPeer-evaluationTeacher-evaluationClearstructureTopicsentenceMorerelativeinformationRightlinkingwordsRightgrammarRightspellingGoodhandwritingGreatGoodTryharderWhowantstoshareyourwriting?Don'tbeshy!Justhaveatry!Comeon!Icanliveupto90years.WhenIdieatsea,Ibecomefoodformanykindsofanimalslivinginandaroundthesea.Thisfoodlastsforoverayearandhelpstocreatealivelyandhealthyecosystem.Iplayanimportantroleinourworld,soyoumustprotectme.ForexamplesecondparagraphLanguagePoints!1.Bluewhalescanliveupto90years.蓝鲸的寿命可达90年

。liveupto达到；符合（期望等）；活到（某一年龄、岁数等）例如：Healwayslivesuptohisparents'expectations.他总是不辜负父母的期望。【拓展】同义词reach达到（某一数量、程度、年龄等

）；在表示活到某一年龄时，可与“liveupto”替换。Sometreescanreachaheightof30meters.有些树能长到30米高

。Somepeoplecanreach90yearsold.有些人能活到90岁

。LanguagePoints!2.Whenabluewhalediesatsea,itbecomesfoodformanykindsofanimalslivinginandaroundthesea.当一头蓝鲸在海洋中死去时，它会成为生活在海洋里及海洋周边的多种动物的食物。livinginandaroundthesea整体是现在分词短语作后置定语，修饰前面的animals。相当于一个定语从句which/thatliveinandaroundthesea。例如：Theboystandingthereismybrother.站在那儿的男孩是我弟弟

standingthere修饰theboy，可转换为

Theboywho/thatisstandingthereismybrother.Whyshouldweprotectanimalsandplants?Becausetheyareourfriendsandtheyhelpkeepthebalanceofnature.Project

4a-4dSectionB02

Workingroups.Chooseorcreatethetitleofyourposter.4a

Collectpicturesandfindoutinformationabouttheplantoranimalthatyouchose.4b1.Whatisitsname?Itsnameissunflower.2.Wheredoesitlive/grow?Itmainlygrowsinsunnyfields,meadowsandfarmlandsintemperateandtropicalregions.Itneedsplentyofsunlighttothrive.3.Whydidyouchooseit?Ichoseitbecauseitsbrightyellowpetalsalwaysfacethesun,whichgivespeopleafeelingofwarmthandvitality.Italsosymbolizesoptimismandpositive-ness.4.Whataresomeinterestingfactsaboutit?Someinterestingfactsaboutsunflowers:First,theheadofasunflowerisactuallymadeupofthousandsoftinyflowers.Second,sunflowerscantrackthemovementofthesunacrosstheskyduringtheday,aphenomenoncalledheliotropism.Third,sunflowerseedsarenotonlyapopularsnackbutalsoanimportantsourceofoil.

Makeyourposter.4c

Presentyourposterinclass.Thenvoteforthebestone.4dTheBestGroupTheBestGroupWhatcanmagicalanimalsbringtous?Theycansparkourimaginationandmakeusrealizethewondersofnature.Refl