Unit+2+Topic+3+Section+D 仁爱版九年级英语上册.pptx

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1、Unit 2 Saving the EarthTopic 3 Section D 学习目标学习目标预习检测预习检测知识梳理知识梳理课堂总结课堂总结学习导航重点探究重点探究当堂当堂检测检测新课导入新课导入Do you know how important the forest is?Lets talk!学习目标学习目标能熟悉并正确运用本课时的重点单词和短语能熟悉并正确运用本课时的重点单词和短语12能能进进一步一步巩固巩固复合从句复合从句3能能够谈论森林的重要性森林的重要性1.Dad,whymustIstop_computergames?Foryourhealth,myboy.A.playB.to

2、playC.toplayingD.playing2.Seeingtheirteacher_intotheclassroom,theystopped_atonce.A.walk;tellingB.entering;tospeakC.enter;totellD.walking;talking预习检测预习检测DD3.Remember_offthelightswhenyouleavetheroom,please.A.toturnB.turningC.turn D.turns4.Englishisveryimportant.Youaresupposed_itwell.A.learnsB.tolearn

3、C.learningD.learned5.Treesare_toprovidewoodtobuildhouses.A.cutupB.cutoffC.cutdownD.cutawayABC知识梳理知识梳理Key points 1.They plant different types of trees so that birds and animals can live in the forests。他们种植了不同种类的树，因此小鸟和动物们能够居住在森林里。sothat此处引导目的状语从句，意为“目的是，为的是”，可换成inorderthat。eg:Theyclimbedhighersothatt

4、heymightseefarther.他们爬得更高，以便看得更远。Key points2.You have not started turning green yet!你还没有开始成为绿色使者。green 不单纯指不单纯指“绿色绿色”，也可借这种颜色用来指代保护环境的人。eg:Youarepalegreen.你刚刚成为绿色卫士。Youaremediumgreen.你是中级绿色卫士。Youarebrightgreen.你优秀的绿色卫士。Key points3.Your are bright green,but do not stop trying.你是个优秀的绿色使者，但是不要停止努力。stop

5、doingsth.停止正在做的事；eg:Whentheteachercamein,thestudentsstoppedtalkingandlaughing.当老师走进来，学生们停止了说笑。stoptodosth.停下来（正在做的事）做另一件事；eg:Hestoppedtotalkwithher.他停下来和她讲话。探究一复合句的归纳总结Recyclingcanprotecttheenvironment,_itcansavemoney,too.Somethingswehavedonearegoodfortheearth_somearebad.Weshoulddoeverythingtoprotec

6、tit,_wellbepunishedandloseourhome.peopleproducepowerfromcoal,_itisverydirtyandcausesacidrain.Compound SentenceGrammarandwhilebutorCompound Sentencebutso orwhile for andas well asneithernornot onlybut alsobothandeitheror复合句是由并列连词把两个或两个以上的简单句连在一起构成的复合句是由并列连词把两个或两个以上的简单句连在一起构成的句子。连词前可用逗号，也可不用逗号。句子。连词前可

7、用逗号，也可不用逗号。1 1.表示顺承、并列、递进关系的并列连词表示顺承、并列、递进关系的并列连词and和，both.and.和都，aswellas也，notonly.butalso.不但而且，neither.nor.既不也不等。eg:Myfatherboughtmeapresent,andIlikeitverymuch.HecanspeaknotonlyEnglishbutalsoFrench.特别提醒：and连接的两个并列成分的肯定句变为否定句时，and要变成or。Icantsingordance.复合句复合句 (Compound Sentence)2.表示转折和对比关系的并列连词but但

8、是，yet然而，while而eg:LucylikesredwhileLilylikeswhite.Thedoctorstriedtosavethepatient,buttheyfailed.=Althoughthedoctorstriedtosavethepatient,theyfailed.尽管医生们尽力抢救那个病人，但是失败了。3.表示选择关系的并列连词either.or.要么要么，or或者、否则eg:Studyhard,oryoullfailtheexam.Eitheryouorhehasmadethemistake.4.表示因果关系的并列连词 so所以、因此，for因为eg:Katew

9、asill,soshedidntgotoschool.Itmusthavebeenwetlastnight,forthegroundiswet.Wouldyouliketobea_person?First,yououghtto_theelectricitywhenyouleavearoom._saidthandone.Actionsspeak_thanwords.Thetraincan_atopspeedof431kmperhour.greenershutoffEasierlouderreach FunctionsShow time阅读课本阅读课本Functions的句子的句子,补全句补全句子

10、子,翻译成汉语翻译成汉语,最后最后小组内派代表小组内派代表说出更多英语谚语。说出更多英语谚语。例如例如:Love me love my dog.爱屋爱屋及乌。及乌。No pains no gains.不劳则不劳则无获。无获。通过以上活动，我们可以知道：复合句是由_把两个或两个以上的_连在一起构成的句子。连词前可用逗号，也可不用逗号。常用的并列连词有：and和，both.and.和都，aswellas也，notonly.butalso.不但而且，but但是，yet然而，while而，either.or.要么要么，or或者、否则等。当堂当堂检测见检测见DCFDCF课课件件活动小结活动小结并列连词简

11、单句探究二森林的重要性Forests are the lungs of the earth.Remove carbon dioxide from the airMake oxygenCut down Build housesRead the passage and answer the questions on Page 50.Forests are the lungs of the earth.Without them,it cannotbreathe.Itneedsitsforeststoremovecarbondioxidefromtheairand to make oxygen.In

12、many countries,such as New Zealand,Canada,andBrazil,forestswerecutdowntoprovidewoodtobuildhouses.Many young volunteers around the world are working intheirholidaystoplantnewtreestoreplacethem.Theseyoungmenandwomenfacemanydifficultieswhentheyplantnewtrees.Theweathermaybeveryhotanddryoritmaybeverycold

13、andwet.Thereareoftenmanyinsectsthatbitetheseplantersontheirlegs,arms,andfaceswhiletheywork.Theycarryheavybagsofsmalltrees,andworkinginthemountainscanbedangerous.Treeplantersarechangingtheworld.Theyplantdifferenttypesoftreessothatbirdsandanimalscanliveintheforests.Eventhoughtreeplantingisverydifficul

14、t,theylovetheirwork.Theybelievethatin50yearstheirlittletreeswillbecomebeautifulforests.SkimmingParagraph1:_Paragraph2:_Paragraph3:_Forestsarethelungsoftheearth.Theseyoungmenandwomenfacemanydifficultieswhentheyplantnewtrees.Treeplantersarechangingtheworld.Read the passage quickly and find out the top

15、ic sentence of each paragraph.ScanningClose your textbooks and decide which of the following sentences is true“T”or false“F”.1.Forestsaretheheartsoftheearth.()2.Inmanycountries,forestswerecutdowntomakemoney.()3.Theseyoungmenandwomenfacemanydifficultieswhentheyplantnewtrees.()4.Eventhoughtreeplanting

16、isverydifficult,theylovetheirwork.()TFTFDetail reading1.Howdoyouunderstand“Forestsarethelungsoftheearth”?2.Whatdifficultiesdotreeplantersfacewhentheyplanttrees?3.Whydotheyplantdifferentkindsoftrees?1.How do you understand“Forests are the lungs of the earth”?Forestscanremovecarbondioxidefromtheairand

17、makeoxygen.2.What difficulties do tree planters face when they plant trees?(1)Theweathermaybeveryhotanddryoritmaybeverycoldandwet.(2)Thereareoftenmanyinsectsthatbitetheseplantersontheirlegs,arms,andfaceswhiletheywork.(3)Theycarryheavybagsofsmalltrees,andworkinginthemountainscanbedangerous.3.Why do t

18、hey plant different kinds of trees?Theyplantdifferenttypesoftreessothatbirdsandanimalscanliveintheforests.Have a try4.Whatwillhappenifwedonotplantnewforests?5.Wouldyouliketobeatreeplanterwhenyouareolder?Whyorwhynot?Ifwedontplantnewtrees,theforestswillbecomesmallerandsmaller.Withouttrees,thewindandth

19、ewaterwilltaketheearthaway,andtheoxygenintheairwillbecomelessandless.ProjectFinding a Greenest Person1.Answer the following questions to see how green you are.1)Doyourecyclenewpapersorcans?A.Often.(2)B.Seldom(1)C.Never.(0)2)Whatdoyouusuallytake?A.Abath.(0)B.Ashower.(2)3)Whenyouhaveashortjourney,howd

20、oyouusuallygothere?A.Walkorrideabike.(3)B.Gobycar.(0)C.Gobybus.(2)4)Whatdoyouusuallydowhenyouseeotherslittering?A.Stopthem.(2)B.Pickthelitterup.(1)C.Donothing.(0)5)Howoftendoyouusepapertowels?A.Ofen.(0)B.Seldom(1)C.Never.(2)6)Howoftendoyoueatfastfood?A.Ofen.(0)B.Seldom(1)C.Never.(2)7)Whattypeofbagsd

21、oyouuseforshopping?A.Basketsorclothbags.(3)B.Reusedplasticsbags.(1)C.Newplasticsbags.(0)8)Howoftendoyouturnoffthelightswhenyouleavearoom?A.Nearlyalways.(2)B.Seldom.(1)C.Never.(0)Scores:04Youhavenotstartedturninggreenyet!59Youarepalegreen.1013Youaremediumgreen.Tryharder.1415Youarebrightgreen,butdonot

22、stoptrying.2.Give your points for your answers.What is your total?Compare your result with your group members and tell the class who is the greenest in your group and give reasons.通过以上活动，我们可以知道：森林是地球的肺。没有它们，它就不能呼吸。地球需要森林来清除空气中的_并制造出_。当堂当堂检测见检测见DCFDCF课课件件活动小结活动小结二氧化碳氧气 完成句子。完成句子。1.汤姆非常富有,然而他的哥哥很穷。Tomwasrichhisbrother.2.洗完手后别忘记关掉水龙头。Dontforgettothetapyouwashyourhands.3.他不得不赶快离开。Hehadtoleave.4.我们经常用电脑来玩游戏。Weoftencomputersgames.5.你应该戒烟。Yousmoking.当堂检测当堂检测whilewaspoorturnoffafterinahurryusetoplayoughttogiveupSummaryUnit 2Topic 3 Section D进一步掌握复合从句谈论森林的重要性