人教八上英语Unit+4+Section+B(2a-3b)课件

Unit4AmazingPlantsandAnimalsSectionB

2a-3bWhatcanyourememberaboutthemeasurementsinthevideo?1.habitheightsizeweight2.joyhappinessfunenjoy3.angrydisappointedsmartsad4.appearlookseemwatch5.honeymilkjuicebread2a.Circletheoddones.Thengiveyourreasons.Tips:从语义范畴、词性、表达的情感或特质类型等方面，对词汇进行区分以找出异类。Therulesforformingnounswiththesuffixes-ance,-(t)ion,-ness,-ity1.-ance规则：通常加在动词后面

，构成抽象名词表示行为、状态、性质等

。

perform（v.表演；执行

）→performance（n.表演；表现

）assist（v.帮助

）→assistance（n.帮助；援助

）2.-(t)ion规则：一般加在动词后，构成名词表示动作、过程或结果。educate（v.教育

）→education（n.教育

）decide（v.决定

）→decision（n.决定

）admit（v.承认；准许进入

）→admission（n.承认；准许进入

）3.-ness规则：加在形容词后面

，构成抽象名词用来表示形容词所描述的性质、状态。happy（adj.幸福的；快乐的

）→happiness（n.幸福；快乐

）

kind（adj.善良的

）→kindness（n.善良

）4.-ity规则：常加在形容词后（部分词需对词尾做适当变化

，如去掉不发音

-e等），构成名词表达与原形容词相关的性质、状态或情况。active（adj.积极的

）→activity（n.活动；活跃

）

possible（adj.可能的

）→possibility（n.可能性

）1.act_____________2.good_____________3.kind_____________4.appear_____________5.real_____________6.imagine_____________7.connect_____________8.popular_____________9.communicate_____________10.importance_____________actiongoodnesskindness

appearancerealityimaginationconnectionpopularitycommunicationimportance2b.Addtheendings-ance,-(t)ion,-ness,and-itytoformnouns.Useyourdictionary.2c.Completethesentenceswiththecorrectformsofthewordsinthebox.appeardisappointimaginestoreweigh1.Ifelt

whenmyfavouriteflowersdied.2.Aftertherain,somemushrooms

inthegarden.3.Inmyhometown,peopleoftenusebamboobasketsto

food.4.Whatdidyouputinyourluggage?It

aton.5.Ican't

mylifewithoutmypets.Theymeanalottome.disappointedappearedstoreweighsimagine2d.Completethepassagewiththecorrectformsofthewordsinthebox.Youmaynotrealizeit,butfrogsplayanimportantroleinour______

ecosystem.Thesmallestfrogsareaboutthesizeofapea,whilelargeronescangrowasbigasahumanhand.Manypeopleknowthatfrogshelpto________farmsbyeatinginsects.___________,noteveryoneunderstandstheir__________innature.Frogscanliveon______andinwater.Becauseofthis,theyarepopularsubjectsinstudiesonclimatechangeandtheecosystem.howeverimportantlandplanetprotectplanetprotectHoweverimportancelandWhat’sthetextmainlyabout?BluewhalefactsWeightWheretheyliveFoodHowlongtheyliveImportanceinnatureasmuchas200tonsalloceansexcepttheArcticOceantiniestoceananimalsupto90yearsfoodforotheranimals,createalivelyandhealthyecosystem23a.Readthetextandcompletethetable.1.Whyarebluewhalesendangered?2.Howtoprotectbluewhales?1.)Thetemperatureinoceanisbecominghigherandhigher.2.)Thereismorepollutioninocean.3.)Humanskillbluewhalestogetthefatundertheirskin.1.)Askthegovernmenttomakelawstostopkilling.2.)Studentscanmakesomeposterstotellthepublictheimportanceofbluewhales.LanguagePoints!Bluewhales

live

inalloceansexcepttheArcticOcean.除北冰洋外，蓝鲸生活在所有大洋之中。【辨析“除了”except,besides,but】①except除…之外；除了，

不包括在整体之内，常与all,everything,everybody,always等词连用。eg：Theywereallthereexceptme.除了我以外他们都在那里。②besides意为“除……之外，还有……”，包括在整体之内，besides后的词是增加的部分。eg：Besides,Ihavesomethingimportanttotellyou.此外，我有重要的事情要告诉你。③but意为“除了……之外，什么也没有”，but后的词是仅有或存在的内容，通常与nothing,nobody,no等表示否定含义的词连用。eg：Noonebutmepassedtheexamyesterday.昨天除了我以外没别人考及格。【对点训练】1.(2023·常州)MyfathergoesbacktoNanjingfortheSpringFestivaleveryyear________

lastyearbecausehewasbusywithhisworkinChangzhou.A．includingB．sinceC．exceptD．till2．(2023·黑龙江)EveryoneexceptMike____(be)goingtoplaybasketballbecausehedoesn'tlikeit.3.（2024·眉山）Everyoneisheree

Alan,becauseheisstillillinhospital.Cisxcept2.Thisfood

lastsforoverayearandithelpstocreatealivelyandhealthyecosystem.这些食物可持续供应一年多，有助于构建一个生机勃勃且健康的生态系统。livelyadj.精力充沛的；生机勃勃的

【辨析alive,living,lively与live】考点词性及意义修饰对象成分alivelivinglivelyliveadj.活着；有生命的既可指人，也可指物作表语或后置定语adj.活着的；有生命的；健在的指人或物作定语adj.活泼的；充满生气的；生动的既可指人，也可指物作定语、表语或宾补adj.&adv.

现场的；现场地多指物作定语或状语eg：Hewastheonlymanaliveintheaccident.他是那场事故中唯一活着的人。eg：Alllivingthingsneedwaterandair.所有生物都需要水和空气。eg：Sheisalivelygirlandeveryonelikesher.她是个活泼的女孩，每个人都喜欢她。eg：Theywatchedalivefootballmatch.他们观看了一场现场直播的足球比赛。【对点训练】用alive,living,lively和live填空。(1)Hetolda_________storyabouthislifeinAfrica.(2)Thewildernessisa__________museumofnaturalhistory.(3)Heistheonlyman_________intheaccident.(4)(2024·无锡)

The2024WuxiMarathonwascovered

onTV.(5)Thoughsheisdisabled,the

girlteacheschildrendrawingfora(n)

.Shealwaysbringsanimals

onthepaper.livelylivingalivelivelivelylivingaliveLanguagePoints!1.Bluewhalesplayanimportantrole

inourworld,sowemustprotectthem.蓝鲸在我们的世界中发挥着重要作用，所以我们必须保护它们。

role

n.角色；作用；职责；任务【常用短语】playarole(in)在...中发挥作用；扮演角色，相当于____________eg：Treesplayanimportantroleinmaintainingecologicalbalance.树木在维护生态平衡方面起着重要的作用。playapart(in)【对点训练】1.Eachofusshouldplayarole________makingourschoolbeautiful.A．on B．in C．at D．of2.（2023·宜昌）对于许多人来说，博物馆在我们生活中一直发挥着重要的作用。

Formanyofus,museums__________________________inourlivesallthetime.Bplayanimportantrole/partwriting3b.Imagineyouareabluewhale.Usethefirstpersontorewritethefirstparagraph.Helloeveryone!MynameisBillytheBlueWhale.Iam________________________________________________________________I'mheavy,butI________________________________________________________________________________________Ilivein___________________________________________Icaneat___________________________________________thelargestandheaviestanimalonearthandcanweighasmuchas200tons.loveswimming,andmanypeoplelikewatchingmeswim.Theythinkit'soneofthemostbeautifulthingstosee.alloceansexcepttheArcticOcean.aroundfourtonsofthemaday.Exercise一、完成句子1.他一直努力达到父母的期望。Heisalwaystryinghisbestto

_____

____

_____hisparents'expectations(期盼).2.

二十四节气在中国文化中起重要作用。

The24solarterms_____

____

_________

_________

_____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_____

______

______intheevenings________theycaninthedaytime.lastedforHowshortasmanythingsasIamabluewhale.Iamthelargestand1._______(heavy)animalonearth.Icanweighas2._______(much)as200tons.Manypeoplelikewatchingme3._______(swim),andtheythinkIamoneofthe4._____________(beautiful)thingstosee.IliveinalloceansexcepttheArcticOcean.Ieatalot,butIeatsomeofthe5._______(tiny)