Unit3Section1-Reading课件沪教版英语七年级下册

Unit3Treesandus

ReadingIGuessinggameReadthesentencesbelow.Canyouguesswhattheyaredescribing?Somearebig,somearesmall.Mostofthemchangecoloursindifferentseasons.Theymakeourschoolbeautifulandcomfortable.Theycanmaketheairfresh.Theyhelpusfightpollution.Trees!Doyouliketrees?Canyounamethetreesinourschool?Whatisyourfavouritetree?Doyouthinktreesareamazing?FreetalkBeforeyoureadfruitbranchtrunkrootflowerleaf（leaves）BeforeyoureadPairworkPredictionIt’smainlyabouttheimportanceoftrees.Whatisthearticlemainlyabout?(Payattentiontotheintroduction,title,picturesandthefirstsentenceofeachparagraph.)Pre-readingOursilentfriendsFromthedeepestforeststoourtownsandcities,treesareallaroundus.Weshareourworldwithtrees.Theyareoursilentfriends,butweoftenoverlookthem.Infact,treesareveryimportantforalllivingthingsonEarth.Tobeginwith,forestsareasafeplaceforanimals,insectsandplantstolive.TreesarealsogoodforushumansbecausetheytakeingreenhousegaseslikeCO2andproduceoxygen.Thismeanstheyhelpcreateacleanenvironmentforeveryoneonthisplanet.While-readingTreesmakeourlivesmoreconvenient.Manyofthethingsaroundus,suchaspaperandpencils,comefromtrees.Justlookaroundyourroom—alotofthefurnitureismadeofwood.Treesalsoprovideuswithdeliciousfruitandwonderfuldrinks.Forexample,wecanmaketeafromtheleavesoftheteatree.Treesdosomuchforus.Wecan’timagineaworldwithoutthem.However,humansarenottreatingtreesinakindway.Wearecuttingdownforestsallaroundtheworld.Wearepollutingthewaterandtheair,andthisharmstrees.Allthesethingsareabigproblem.Weneedtodomoretoprotecttreesandsaveourplanet.animals,insectsandplantsgreenhousegaseslikeCO2oxygenmoreconvenientpaperandpencilsismadeofwooddeliciousfruitandwonderfuldrinksReadingfordetailsReadingforstructureUselinkingwords(连接词)tomakeideasmorelogical(有逻辑的).Giveexamplestomakeyourargumentmorepersuasive(有说服力的).ReadingforstructureDoyouknowotherlinkingwords?Findouttheexamplesandthelinkwordsinparagraph3.Lookaroundourclassroom.Whatelsecomesfromtrees?Givemoreexamples.事实(fact)是关于世界的真实信息。观点(opinion)是个人的感受和信念。Manyofthethings

aroundus,

suchaspaperandpencils,come

fromtrees.Forexample,

wecanmaketea

fromtheleavesoftheteatree.

Wearecuttingdownforestsall

aroundtheworld.Wearepollutingthewaterandthe

air,andthisharmstrees.Infact,

treesareveryimportantfor

alllivingthingsonEarth.Forestsareasafeplaceforanimals,

insectsandplantstolive.Treesmakeourlives

more

convenient.Wecan’timagineaworldwithout

them.However,

humansarenottreating

treesinakindway.Weneedtodomoretoprotecttrees

andsaveourplanet.Post-reading

Discussthequestionsbelow.(1)Whatisthepurposeofthearticle?Whatdoestheauthorwanttotellus?(2)Howdoyouunderstandthesentence“Wecan’timagineaworldwithoutthem(line17)”?(3)Whatelsedotreesdoforus?

Treesareveryimportant!Treesareoursilentfriends!Let’sprotecttreestogether!silentoxygenconvenientwoodtreatVocabularypracticesilenttreatoxygenconvenientwood2CompletetheinformationcolumnontheschoolwebsitewiththewordsfromExercise1.Changetheformifnecessary.3Makesentencesaboutwhattreesdoforuswiththewords

andexpressionsbelow.Treesareimportantbecausetheyproduceoxygenforus.可以在某些名词末尾加上-ful和-less来构成形容词。-ful表示“充满的；有……性质的”。-less表示“没有；无”。例如：

use

→

useful

有用的

use

→

useless无用的

harm

→

harmful

有害的

harm

→

harmless

无害的Moreexamples:

careful;hopeful;helpful;powerful;colourful;

careless;hopeless;

helpless;powerless;colourless;homeless;endless牛津广州版七年级下册Whydoweneedtrees?Keyquestion主题范畴：人与自然Unit3TreesandusReadingIITreesareeverywhere,fromforeststoourtowns.Welivewithtrees,butweoftenignorethem.Treesarevery

forlifeonEarth.Theyarehometoanimalsandplants.Treeshelpusby

ingreenhousegaseslikeCO2andgivingus

,makingtheairclean.Treesmakelivesmore

.Manythingslikepaperandpencilscomefromtrees.Lookaround—lotsoffurnitureis

.Treesgiveusfruitanddrinks,liketeafromteatreeleaves.Treesdoalotforus.Wecan’t

lifewithoutthem.Butpeopleare

treesinabadway.Wecut

forestsandpollutewaterandair,whichhurtstrees.Thisisabigproblem.Weneedto

treesandsaveour

.RevisionCompletethepassageaccordingtothetext.importanttakingoxygenplanetimaginewoodtreatingdownprotectconvenient

PhrasesFindoutthephrasesfromP35toP37.1.利用；使用 _________________(P35)2.给某人提供某物 _________________(P36)3.对……有好处 _________________(P36)4.吸收；摄入 _________________(P36)5.帮助做某事 _________________(P36)6.温室气体 _________________(P36)7.跟某人分享某物 _________________(P37)makeuseofprovidesb.withsth.begoodfortakeinhelpdosth.sharesth.withsb.greenhousegas8.确切地说 _________________(P37)9.首先；第一点 _________________(P37)10.来自 _________________(P37)11.环视；环顾；四下察看____________(P37)12.由……制成 _________________(P37)13.例如；譬如 _________________(P37)14.以友善的方式 _________________(P37)15.砍倒 _________________(P37)

tobeginwithcomefromlookaroundinakindwaycutdownbemadeofforexampleinfactLanguagepoints5.Tobeginwith,forestsareasafeplaceforanimals,insects,andplantstolive.句意:首先，森林对于动物、昆虫和植物来说，是个安全的栖息地。tobeginwith“首先；第一点”，常用于句首，引出一系列观点、陈述或事件中的第一个，相当于“firstly”“firstofall”“atfirst”。tolive

修饰前面的“asafeplace”，说明这个安全的地方是供动物、昆虫和植物生存的。

Let’slearnmore即学即练1.首先，我想简要讲讲这项工作的重要性。_______________,I'dliketotellinbrieftheimportanceofthework.2.Theearthisthebestplaceforus____.A.live B.tolive C.livingTobeginwith6.Manyofthethingsaroundus,suchaspaperandpencils,

comefromtrees.句意:我们周围的许多东西，如纸和铅笔，都来自树木。comefrom“来自”，等同于befrom。suchas“例如”，用于列举多个事物，后直接跟名词或动名词

forexample“例如”，用于列举一个例子，用逗号隔开，后面通常接一个完整的句子

Forexample,wecanmaketeafromtheleavesoftheteatree.句意:例如，我们可以从茶树上获得的叶子制茶。即学即练1.I____fromChinaandI'mproudofmycountry.A.comeB.comesC.amD.AandC2.TherearemanykindsofsportsIlike,____swimming,runningandbasketball.A.suchasB.forexampleC.asD.likeas3.Youcanchooseanycoloryoulike.____,youcanchooseredifyoulikewarmcolors.A.SuchasB.ForexampleC.LikeD.Andsoon7.However,humansarenottreatingtreesinakindway.

句意：然而，人类并没有善待树木。however

副词“然而”，起到转折的作用，通常用逗号与句子其他部分隔开。arenottreating是现在进行时的否定形式1.Sheisalwaysbusywithherwork.____,shetriestospendsometimewithherfamilyeveryday.A.Therefore B.However C.Besides D.Moreover即学即练Practicemakesperfect!I.根据汉语意思完成句子，每空一词。1.植物可以吸收像二氧化碳这样的温室气体，并释放氧气。Plantscan___________________________________________likecarbondioxideandreleaseoxygen.2.这张桌子是由木头制成的。Thisdesk______________________________wood.3.警察环顾四周，没有发现任何奇怪的东西。Thepolice__________________anddidn’tfindanythingstrange.takeingreenhousegasesismadeoflookedaround4.我们的英语老师来自澳大利亚。OurEnglishteacher____________________Australia.5.首先，我将在上课前阅读课本。______________________________,Iwillreadthetextbookbeforeclass.6.我们应该停止砍伐树木。Weshouldstop____________________trees.7.例如，我通过做很多练习题来学习数学。________________________,Istudymathbydoinglotsofexercises.comesfromTobeginwith cuttingdownForexampleImagineflying