Unit 4 课时6 Section B 3a-3c（教学课件）英语新教材人教版八年级上册

Unit4Amazingplantsandanimals第6课时

SectionB3a-3c课型：写作课LearningObjectivesInthislesson,youwill:【学习理解】Extractkeyscientificfactsaboutbluewhalesandorganizethemsystematicallyinatable.【应用实践】Rewritetheexpositorytextintoafirst-personself-introduction,accuratelyconvertingscientificfacts.【迁移创新】Learnaboutmarineecosystemsandbluewhales'role;enhanceawarenessofoceanprotection.Watchthevideo

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IntroductionWhatdoyouknowaboutthebluewhale?marinemammalbiggestanimalendangeredspeciesPlace:deepoceanFood:krill（磷虾）...Pre-readingReadthetextandcompletethetable.3aThebluewhaleisthelargestandheaviestanimalonearth.Itcanweighasmuchas200tons.Manypeoplelikewatchingbluewhalesswim,andtheythinkitisoneofthemostbeautifulthingstosee.BluewhalesliveinalloceansexcepttheArcticOcean.Theyeatalot,buttheyeatsomeofthetiniestanimalsintheocean.Abluewhalecaneataroundfourtonsoftheseaday.在地球上多达，达到……之多n.大海；海洋prep.除……之外；除了adj.极小的；微小的3aReadthetextandcompletethetable.Bluewhalescanliveupto90years.Whenabluewhalediesatsea,itbecomesfoodformanykindsofanimalslivinginandaroundthesea.Thisfoodlastsforoverayearandithelpstocreatealivelyandhealthyecosystem.Bluewhalesplayanimportantroleinourworld,sowemustprotectthem.liveupto活到……岁；达到……的寿命adj.精力充沛的；生机勃勃的扮演一个重要的角色BluewhalefactsWeightWheretheyliveFoodHowlongtheyliveImportanceinnatureasmuchas200tonsinalloceansexcepttheArcticOceansomeofthetiniestanimalsintheoceanupto90yearsWhenabluewhaledies,itbecomesfoodformanyanimalsandithelpstocreatealivelyandhealthyecosystem.Whenawhalediesandsinks,itbecomesawhalefall

–likeanunderwaterbuffet(自助餐)fordeep-seacreatures!ThinkandShareHowdoyoufeelaboutthewhalefall?Whatcanyoulearnfromthewhalefall?Amazing,magic,unbelievable,sadbuthopeful...Whaleseattonsoffoodwhenalive,buttheirbodiesfeedthedeepseaafterdeath.That’snature’sperfectbalance!Imagineyouareabluewhale.Usethefirstpersontorewritethefirstparagraph.Helloeveryone!MynameisBillytheBlueWhale.Iam__________________________________________________________________I'mheavy,butI________________________________________________________________________________________________Ilivein_____________________________Icaneat___________________________________________.thelargestandheaviestanimalonearth.Icanweighupto200tons.loveswimmingintheoceanfreely.alloceansexcepttheArcticOcean.aroundfourtonsoffoodaday.Humansoftensaywatchingmeswimisoneofthemostbeautifulsightsintheocean.3bCompleteyourpassageaboutthebluewhalebasedonthetextin3a.写作指导

文本体裁话题分析要求完成段落的改写，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。3cWhatshouldwemainlypayattentiontowhenrewritinganarticle?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weightlivingareafoodpreference（喜好）

ObserveandthinkHowtousethefirstpersontorewritethesecondparagraph?pointslifespanrole/functionimportanceWriteyourarticleaccordingtotheinformationmentionedabove.Payattentiontoyourspellingandstructure.Becareful!ChecklistSelf-evaluationPeer-evaluationTeacher-evaluationClearstructureTopicsentenceMorerelativeinformationRightlinkingwordsRightgrammarRightspellingGreatGoodTryharderNow,youcanexchangeyourwritingswithyourpartnertocheckeachother’swriting.Icanliveupto90years.WhenIdieatsea,Ibecomefoodformanykindsofanimalslivinginandaroundthesea.Thisfoodlastsforoverayearandithelpstocreatealivelyandhealthyecosystem.Iplayanimportantroleinourworld,soyoumustprotectme.ExampleLanguagePoints1.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

。LanguagePoints2.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.一、完成句子1.他一直努力达到父母的期望。Heisalwaystryinghisbestto

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_____hisparents'expectations(期盼).2.

二十四节气在中国文化中起重要作用。

The24solarterms_____

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_____Chineseculture.3.假如鸟吃了有病的或死的鱼，它们可能会相继死去。

Ifthebirdseatthesickordead

fish,theymay________

________.liveuptoplayanimportantpart/roleindieoffExercise4.这个有趣的部分才持续了半个小时。时间真短啊!

Thisinterestingpartonly________

________halfanhour.________

________itwas!5.有了灯泡，人们可以在夜里做和白天一样多的事情。

Withlightbulbs,peoplecando_____

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______intheevenings________theycaninthedaytime.lastedforHowshortasmanythingsasExerciseIamabluewhale.Iamthelargestand1._______(heavy)animalonearth.Icanweighas2._______(much)as200tons.