全国一等奖人教版（2024）英语八年级上册Unit 4SB3a-3c-课件

Unit4

AmazingPlantsandAnimalsSectionB（3a-3c）Learningobjectives能回顾并运用形容词最高级的构成及句型（如“the+最高级+in/of+范围”），结合蓝鲸相关信息完成写作能理解并正确使用形容词和副词的最高级来表达差异

激发对海洋生物的兴趣，树立保护濒危动物的意识，体会用英语介绍自然生物的成就感。Lead-inWhatdoyouknowaboutthebluewhale?Isitbig?Whatmakesitspecial?

While-readingReadthetextandcompletethetable.Pre-writing3aBluewhalefactsWeightWheretheyliveFoodHowlongtheyliveRoleinecosystem

While-readingReadthetextandcompletethetable.Pre-writing3aWhat’sthetextmainlytalkabout?Ittalksaboutthebluewhale.Wecanpredictthemaincontentofthearticlethroughthetitleandpictures.Thebluewhaleisthelargestandheaviestanimalonearth.Itcanweighasmuchas

200tons.Manypeoplelikewatchingbluewhalesswim,andtheythinkitisoneofthemostbeautifulthingstosee.BluewhalesliveinalloceansexcepttheArcticOcean.Theyeatalot,buttheyeatsomeofthetiniestanimalsintheocean.Abluewhalecaneataroundfourtonsoftheseaday.Bluewhalescan

liveupto90years.Whenabluewhalediesatsea,itbecomesfoodformanykindsofanimalslivinginandaroundthesea.Thisfoodlastsforoverayearandithelpstocreatea

lively

andhealthyecosystem.Bluewhalesplayanimportantroleinourworld,sowemustprotectthem./ˈəʊʃn/n.大海；海洋/ɪkˈsept/prep.除……之外；除了tiny/ˈtaɪni/adj.极小的；微小的lively/ˈlaɪvli/adj.精力充沛的；生机勃勃的Pre-writing在地球上多达，达到……之多liveupto达到；符合一个生机勃勃和健康的生态系统扮演一个重要的角色BluewhalefactsWeightWheretheyliveFoodHowlongtheyliveImportanceinnatureasmuchas200tonsalloceansexcepttheArcticOceantiniestoceananimalsupto90yearsfoodforotheranimals,createalivelyandhealthyecosystem2Readthetextandcompletethetable.3a

Imagineyouareabluewhale.Usethefirstpersontorewritethefirst

paragraph.Helloeveryone!MynameisBillytheBlueWhale.Iam

_____________________________________I’mheavy,butIlove___________________________________________

____

___.Ilivein_______________________________________________________.

Myfavouritefoodis____________________________________Icaneat_____________________________________________________________.thelargestandheaviestanimalonearth.swimmingintheocean.Manypeoplelikewatchingmeswim,andtheythinkIamoneofthemostbeautifulthingstoseealloceansexcepttheArcticOcean.someofthetiniestanimalsintheocean.aroundfourtonsofthemaday.3bcool→Completeyourpassageaboutthebluewhalebasedonthetextin3a.Icanliveupto90years.WhenIdie,Ibecomefoodformanykindsofanimalslivinginandaroundthesea,Thisfoodlastsforoverayearandithelpstocreatealivelyandhealthyecosystem.SoIplayanimportantroleintheocean'secosystem.Pleaseprotectme.3cPost-writingPeerReview同伴互评

内容完整性（是否涵盖所有要点，事件描述是否详细）

结构合理性（开头、中间和结尾是否清晰，段落之间过渡是否自然）

语言准确性（语法错误、词汇拼写错误的数量）

语言丰富性（是否使用了多样化的词汇和句型）

情感表达（是否真实、真挚地表达了自己的感受）Post-writingPresentationandSharingIcanliveupto90years.WhenIdie,Ibecomefoodformanykindsofanimalslivinginandaroundthesea...Langagepoints1.Manypeoplelikewatchingbluewhalesswim,andtheythinkitisoneofthemostbeautifulthingstosee.许多人喜欢观赏蓝鲸游泳，他们认为这是最美丽的景象之一。辨析:watchsbdosth与watchsbdoingsthwatchsbdosth观看某人做某事,强调看到动作发生的全过程watchsbdoingsth观看某人正在做某事,强调看到动作正在进行e.g.Iwatchedhimgetintotheroom.我看到他进了那个房间。e.g.Hewatchedthemeating.他看见他们正在吃东西。Langagepoints2.BluewhalesliveinalloceansexcepttheArcticOcean.蓝鲸生活在除北冰洋以外的所有海洋中。辨析:except,exceptfor,but与besidesexcept除……之外(没有…)，着重强调在同类人或物中除去

一个或几个人或物,表示一种排除关系,有“减去”之意。exceptfor除……之外，表示对整体主要部分的肯定和对局部的否定,起部分修正作用but除……之外，和except的用法基本相同,但着重强调整句的内容,习惯上用于no,nothing,anything等词之后besides除……之外(还有…)，指在整体中加入一部分,表示一种累加关系,有“加上”之意LangagepointsexceptWeareallhereexcept/butTom.除汤姆之外,我们都在这里了。(不包括Tom)exceptforHeisagoodmanexceptforhisbadtemper.除了脾气有点儿差之外,他是一个好人。butShecoulddonothingbutcry.她除了哭什么都做不了。besidesBesidesmilk,weneedvegetables.除了牛奶,我们还需要蔬菜。(也需要牛奶)LangagepointsexceptWeareallhereexcept/butTom.除汤姆之外,我们都在这里了。(不包括Tom)exceptforHeisagoodmanexceptforhisbadtemper.除了脾气有点儿差之外,他是一个好人。butShecoulddonothingbutcry.她除了哭什么都做不了。besidesBesidesmilk,weneedvegetables.除了牛奶,我们还需要蔬菜。(也需要牛奶)Langagepoints3.Thisfoodlastsforoverayearandithelpstocreatealivelyandhealthyecosystem.这些食物能维持一年多，有助于创造一个生机勃勃、健康的生态系统。last①【不及物动词】持续,延续，常与时间段连用。Howlongwillthebadweatherlast?这种坏天气会持续多久?Oursummervacationlastslong,fornearlytwomonths.我们的暑假持续时间很长将近两个月。Langagepoints②【形容词】上一个的;刚过去的;最后的lastweek上周thelastbus末班公共汽车③【副词】最后;上一次;最后一次e.g.Whendidyoulastseehim?你上一次见到他是什么时候?④【名词&代词】最后的人或事物e.g.Hewasthefirsttoarriveandthelasttoleave.

他到得最早，离开得最晚。Langagepoints4.Howlongtheylive它们的寿命辨析:howlong,howoften,howsoon与howfarhowlong多长时间;(物体)多长,用来询问时间的长短或物体的长度howoften多久一次,用来提问动作发生的频率，常用表示频率的词或短语作答howsoon多久以后,用来询问将来的时间，指时间还有多久，多提问“in+时间段”howfar多远,用来询问距离，指路程的远近Langagepoints4.Howlongtheylive它们的寿命e.g.Howlongistheruler?这把尺子有多长?e.g.—Howoftendoyouexercise?你多久锻炼一次?—Threetimesaweek.一周三次。e.g.—Howsoonwilltheycomeback?他们多久以后回来?—Intwoweeks.两周后。e.g.—Howfarisitfromheret