(新人教版)英语九年级全册：Unit 13 全单元ppt课件(223页).ppt

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1、我们正试图拯救地球我们正试图拯救地球SectionA1a-1cThe earth is polluted.air pollutionThefactoriesthatburncoalpollutetheairwithalotofblacksmoke.n.煤炭煤炭Factoriesputwasteintotheriver.water pollutionmobile phone pollutionlitterv.乱扔乱扔n.垃圾垃圾rubbishwaste垃圾，废弃物垃圾，废弃物Peopleshouldthrowawaylitterinthebin.n.垃圾箱垃圾箱noise pollutionTh

2、erearemorecarsontheroad.1aHere are some words related to different kinds of pollution.Write them in the box below.Then add more words.不同种类的污染不同种类的污染noisepollution_airpollution_waterpollution_loudmusicplanesmobilephonesfactoriescarssmokingshipsfactorieslitteringrubbishbuildinghousesbuildinghousesloud

3、musiccarsrubbishplaneslitteringshipsfactoriessmokingbuildinghousesmobilephones垃圾；乱扔垃圾；乱扔轮船轮船工厂工厂移动电话移动电话1bListen and complete the sentences.What was the problem?Theriverwas_.Eventhebottom(底部底部)oftheriverwasfullof_.Therewerenomore_forfishermen(渔民渔民)tocatch.reallydirtyrubbishfish问题是什么？问题是什么？充满充满不再不再Wh

4、at caused the problem?Peoplearethrowing_intotheriver.Factoriesareputting_intotheriver.How should the problem be solved?Weshouldwritetothe_andaskthemto_thefactories.Everyoneshouldhelpto_theriver.litterwastegovernmentclosedowncleanupListen again and check()the sentences you hear.1.Wecouldgofishinginth

5、eriver.2.Theriverwasreallydirty.3.Theriverhasalwaysbeenthenicestriverinthistown.4.Weshouldasktheteachersforhelp.1cTheriverwasdirty.Eventhebottomoftheriverwasfullofrubbish.Butitusedtobesoclean!Yes,butpeoplearethrowinglitterintotheriver.Everyoneinthistownshouldplayapartincleaningitup!Make conversation

6、s using the pollution in 1a.Theriverhasalwaysbeenthenicestriverinthistown.Yes,itusedtobesoclean.Whatcausedtheproblem?ButIwastherelastweekendandtheriverwasreallydirty.Factoriesarealsoputtingwasteintotheriver.Peoplearethrowinglitterintotheriver.Whatshouldwedo?Yes,everyoneinthistownshouldplayapart.Wesh

7、ouldwritetothegovernmentandaskthemtoclosedownthefactories.Whatelsecanwedo?Everyoneshouldhelptocleanuptheriver.1.Weretryingtosavetheearth!我们正在竭尽全力拯救地球我们正在竭尽全力拯救地球!trytodo=tryonesbesttodo努力去做某事。努力去做某事。e.g.Everystudentshouldtrytostudyhardinordertostudyinauniversity.为了进入大学学习，每个学生都应该为了进入大学学习，每个学生都应该努力学习。

8、努力学习。2.Herearesomewordsrelatedtodifferentkindsofpollution.berelatedto与与有关有关e.g.Iamnotrelatedtohiminanyway.我和他无任何关系。我和他无任何关系。3.Everyoneinthistownshouldplayapartincleaningitup!playapartin在在方面起作用方面起作用e.g.Agooddietplaysalargepartinhelpingpeoplelivelonger.健康的饮食在帮助人们长寿方面起着健康的饮食在帮助人们长寿方面起着非常大的作用。非常大的作用。pla

9、yapart在在中扮演角色中扮演角色e.g.HewasinvitedtoplayapartinthisTVplay.他被邀请参加这个电视剧的演出。他被邀请参加这个电视剧的演出。4.Eventhebottomoftheriverwasfullofrubbish.Yes,butpeoplearethrowinglitterintotheriver.litter和和rubbish都可指都可指“垃圾垃圾”，用作，用作不可数名词不可数名词。rubbish指指“没用的东西没用的东西(被扔或将要丢被扔或将要丢弃的无用的东西弃的无用的东西)”不可回收不可回收。litter指指“(室内或公共场所室内或公共场所)

10、乱扔的废物乱扔的废物(纸屑、不要的包装纸、废瓶等纸屑、不要的包装纸、废瓶等)”还可还可回收。回收。e.g.Throwtherubbishout.把垃圾扔出去。把垃圾扔出去。Theroomisfullofrubbish.房间里堆满了垃圾。房间里堆满了垃圾。Pickupyourlitterafterapicnic.野餐后将废弃物收拾好。野餐后将废弃物收拾好。翻译翻译水污染水污染 空气污染空气污染噪音污染噪音污染努力去做某事努力去做某事充满充满、的底部、的底部把、扔进、把、扔进、参与；在、方面起作用参与；在、方面起作用过去常常过去常常打扫干净打扫干净2aListen to the interview

11、.Circle the kinds of pollution that Jason and Susan talk about.A.landpollutionB.airpollutionC.noisepollutionD.waterpollution2bListen again and complete the sentences.1.Theairisbadlypollutedbecausethereare_ontheroadthesedays.2.Factoriesthatburncoalalso_theairwithalotofblacksmoke.morecarspollute3.Ther

12、eisalsotoomuchrubbishandwaste.People_thingseveryday.4.Peoplearealsolitteringin_likeparks.Thisisturningbeautifulplacesintougly(丑陋的丑陋的)ones.arethrowingawaypublicplacesRole-play conversations between Jason and Susan.2cTheairhasbecomereallypollutedaroundhere.Imgettingveryworried.Yes,Iusedtobeabletoseest

13、arsinthesky.Theproblemisthat现在完成时现在完成时能能What should we do to save the earth?Turn off the lights when you leave a room.关掉关掉stop riding in carsstop using paper towels or napkins（餐巾，餐巾纸）（餐巾，餐巾纸）recycle books and paper回收利用回收利用2dRead 2d and complete the chart.ProblemsSolvingproblemsairpollutionwastepollu

14、tionwooden(木头木头的的)chopsticksorplasticforksrubbishtakethebus,subwayorrideabikeinsteadofdriving.bringabagtogoshopping.usechopsticksorforksathome.throwrubbishinthebins.解决问题解决问题Jason and Susan,what are your ideas for solving these problems?主意，观点主意，观点Yeah,orrideabike.Thereareotheradvantages(优点优点)ofbikeri

15、ding.Itsgoodforhealthanditdoesntcost(花费花费)anything!Well,tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdriving.Great ideas!What about waste pollution?Me,too.Also,Inevertakewoodenchopsticksorplastic(塑料塑料)forkswhenIbuytakeaway(外卖食品外卖食品)food.Iusetheonesathome.Mmm,Ithinksimplethingslikebringin

16、gabagtogoshoppingcanhelp.Istarteddoingthatayearago.Andremembertothrowrubbishinthebinsandkeeppublicplacescleanandbeautifulforeveryone.So together,our actions can make a difference and lead to a better future!1.Thisisturningbeautifulplacesintouglyones.2.turninto把把变成变成e.g.Theicyrainseemedliketoturninto

17、snow.渐渐地冻雨又变成雪花的模样。渐渐地冻雨又变成雪花的模样。2.Itsgoodforhealthanditdoesntcostanything!costv.花费；使付出花费；使付出指花费金钱，主语通常是物。指花费金钱，主语通常是物。cost的过的过去式和过去分词均为去式和过去分词均为cost。e.g.ThenewshirtcostMrWang200yuan.王先生花了王先生花了200元买了新衬衫。元买了新衬衫。Howmuchdoesthenewcomputercost?新电脑花了多少钱？新电脑花了多少钱？take,spend,pay&costtake，spend，pay和和cost都可以

18、表示都可以表示“花花费费”，但它们的用法各有不同。，但它们的用法各有不同。1)take多表示花费时间多表示花费时间，常用于，常用于Ittakessb.sometimetodosth.这一句型中，其这一句型中，其中中it作形式主语作形式主语。e.g.Itusuallytakesme40minutestocookthedinner.2)spend多表示花费时间和金钱，主语通多表示花费时间和金钱，主语通常是人常是人，常用于，常用于sb.spend(s)sometime/moneyonsth.和和sb.spend(s)sometime/money(in)doingsth.两种句型。两种句型。e.g.D

19、avidspent2,000yuan onthenewmachine.Myfatherspendsanhour(in)watchingthenewsonTVeveryday.3)pay多表示花费金钱，主语通常是人多表示花费金钱，主语通常是人，常用于常用于sb.pay(s)somemoneyforsth.句句型。型。e.g.Tommypaid20yuanforhisbreakfastyesterday.4)cost多表示花费金钱，主语通常是物多表示花费金钱，主语通常是物，常用于常用于sth.cost(s)(sb.)somemoney.句句型。型。e.g.ThenewdresscostLinda8

20、8yuan.根据句意用根据句意用take,spend,pay或或cost的适当的适当形式填空。形式填空。1.Thatnewcar_themlotsofmoney.2.Mona_50yuanonthebooksjustnow.3.Itusually_meanhourtodomyhomework.costspenttakes4.Youshould_sometimepractisingyourpronunciation.5.Mybrother_6,000yuanforthenewcomputeryesterday.spendpaid3.Sotogether,ouractionscanmakeadif

21、ferenceandleadtoabetterfuture!makeadifference(to)表示表示(对对)产生影响或作用产生影响或作用e.g.Doyouthinkhiswordswouldmakeanydifferencetothefinaldecision?你认为他的话会对最后的决定产生影你认为他的话会对最后的决定产生影响吗？响吗？ThenewteacheralwaysencourageslittleTom.Thishasmadeabigdifferencetohim.新来的老师总是鼓励小汤姆，这对他影新来的老师总是鼓励小汤姆，这对他影响很大。响很大。用动词的适当形式填空。用动词的适

22、当形式填空。1.Weretrying_(save)theearth.2.Thereusedto_(be)cleanandbeautiful.3.Therearetoomany_for_tocatch(fish).4.Itsbadforenvironmenttouse_(wood)chopsticks.The earth is badly polluted.Please make a poster and think of what we can do.1.Copy the new words and remember them.2.Read the listening materials of

23、 1b,2a.Section A 23a-3bTranslate these sentences into English.Translate these sentences into English.1.甚甚至河至河底都满是垃圾。底都满是垃圾。2.这个镇上的每个人都应该参与清扫。这个镇上的每个人都应该参与清扫。Eventhebottomoftheriverwasfullofrubbish.Everyoneinthistownshouldplayapartincleaningitup.3.骑自行车有其它的优点。骑自行车有其它的优点。4.我买外卖食我买外卖食品时从品时从来不拿木筷子和塑料叉来不拿

24、木筷子和塑料叉子。子。Thereareotheradvantagesofbikeriding.InevertakewoodenchopsticksorplasticforkswhenIbuytakeawayfood.Theearthisbadlypolluted.Whatshouldwedotosavetheearth?Letstakeaction(采取行动采取行动)Turnoffthelightswhenyouleavearoom.Recyclebooksandpaper.Takebusesinsteadofdrivingcars.Therearesomeanimalsareendanger

25、ed.Weshoulddosomethingtoprotecttheanimalsandtheenvironment!濒临灭绝的濒临灭绝的Thezoosprovidehomesformanyendangeredanimals.1.Haveyoueverseenashark（鲨鱼）（鲨鱼）?2.Whatdoyouknowaboutsharks?WheresharkfinsoupispopularNumberofsharkscaughtandtradedeveryyearHowmuchthenumbersofsomekindsofsharkshavefalleninthelast20to30yea

26、rsTwoenvironmentalgroupswhichareagainst“finning”southernChina70millionover90percentWildAidandtheWWF3aRead the passage about sharks and complete the fact sheet below.鱼翅汤鱼翅汤交易交易下降下降反对反对猎翅猎翅1.Asharkcannolongerswimandslowlydies.鲨鱼不能再游泳然后慢慢死掉。鲨鱼不能再游泳然后慢慢死掉。nolonger意思是意思是“不再不再”e.g.Imnolongerastudent.有两个短语

27、和有两个短语和nolonger同义，即同义，即notanylonger和和notanymore，但他，但他们侧重的方面不同。们侧重的方面不同。我不再是个学生了。我不再是个学生了。nolonger和和notanylonger侧重时间。侧重时间。e.g.Henolongerliveshere.=Hedoesntlivehereanylonger.他不在这儿居住了。他不在这儿居住了。(一个时间以前他住一个时间以前他住在这儿，过了这个时间，他就离开了。在这儿，过了这个时间，他就离开了。)notanymore侧重程度和数量侧重程度和数量e.g.Youcandrinknomore.=Youcantdrin

28、kanymore.你不能再喝了。你不能再喝了。(喝酒的量到了一定程喝酒的量到了一定程度，不能再继续下去了。度，不能再继续下去了。)2.Thismethodisnotonlycruel,butalsoharmfultotheenvironment.这种方法不但残忍而且对环境有害。这种方法不但残忍而且对环境有害。notonlybutalso用于连接两个表示并列关系的成分，着用于连接两个表示并列关系的成分，着重强调后者，其意为重强调后者，其意为“不仅不仅而且而且”;其中的其中的also有时可以省略。有时可以省略。e.g.Shenotonlyplayswell,butalsowritesmusic.她

29、不但很会演奏，而且还会作曲。她不但很会演奏，而且还会作曲。Notonlymenbutalsowomenwerechosen.不仅仅是男的，女的也有被选中的。不仅仅是男的，女的也有被选中的。若连接两个成分作主语，其谓语通常与靠近若连接两个成分作主语，其谓语通常与靠近的主语保持一致。的主语保持一致。e.g.Notonlyyoubutalsohehastoleave.不只是你，他也得离开。不只是你，他也得离开。notonly放在句首，后接句子时要用倒装结放在句首，后接句子时要用倒装结构。构。e.g.Notonlyhadthepoormanbeenfined,butalsohehadbeensentt

30、oprison.这个可怜的人不仅被罚款，而且还被这个可怜的人不仅被罚款，而且还被送进了监狱。送进了监狱。beharmfulto对对有害有害e.g.Smokingisharmfultothehealth.吸烟有害健康。吸烟有害健康。Playingcomputergamesmuchisharmfultostudents.电脑游戏玩太多对学生有害。电脑游戏玩太多对学生有害。3.Sharksareatthetopofthefoodchainintheoceansecosystem.鲨鱼位于海洋生物系统食物链的顶部。鲨鱼位于海洋生物系统食物链的顶部。atthetopof在在最高地位最高地位;用最高用最高

31、最大最大的的(速度速度,声音等声音等)Heshoutedatthetopofhisvoiceinorderthathemightbeheard.他尽力大声叫喊他尽力大声叫喊,以便别人能听见。以便别人能听见。4.Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.如果它们的数目降至过低，会给所有如果它们的数目降至过低，会给所有海洋生物带来危险。海洋生物带来危险。此句复数形式的此句复数形式的numbers表达全海洋中鲨表达全海洋中鲨鱼的总量。当表示数值的高或低时，鱼的总量。当表示数值的高或低时，number要用要用high或或low修饰

32、。修饰。3bRead the passage again and fill in the blanks with the words in the box.so although if but when1.Manypeopledonotrealizetheyare2.killingawholeshark_they3.enjoyabowlofsharkfinsoup.4.2.Sharksareatthetopofthefoodchain,5._iftheirnumbersdrop,theoceans6.ecosystemwillbeindanger.whenso3.Manythinkthatsh

33、arksaretoostrongtobeendangered,_theyarewrong.4._therearenoscientificstudiestosupportthis,alotofpeoplebelievethatsharkfinsaregoodforhealth.5.Sharksmaydisappearoneday_wedonotdosomethingtostopthesaleofsharkfins.butAlthoughifadj.科学上的，科学的科学上的，科学的Retellthepassageaccordingtothewordsbelow.shark fin soup in

34、southern China each time cut off no longer not onlybut also at the top drop be endangered the strongest around 70 million fallen by over 90 percent WildAid and the WWF develop laws scientific studies Write5measurestoprotecttheenvironment.1.不同种类的污染不同种类的污染2.河底河底3.把垃圾扔到河里把垃圾扔到河里4.在在中起作用中起作用differentkin

35、dsofpollutionthebottleoftheriverthrowrubbishintotheriverplayapartinI.Check if you know these phrases.5.在中国南部在中国南部6.对对有害有害7.在在顶部顶部8.海洋生态系统海洋生态系统insouthernChinabeharmfulto atthetopoftheoceansecosystemII.Translate the sentences.II.Translate the sentences.1.甚至是河底都满是垃圾。甚至是河底都满是垃圾。2.这个方法不仅残酷还对环境有害。这个方法不仅残

36、酷还对环境有害。Eventhebottomoftheriverwasfullofrubbish.Thismethodisnotonlycruel,butalsoharmfultotheenvironment.3.鲨鱼处于海洋食物链的顶部。鲨鱼处于海洋食物链的顶部。4.许多人相信鱼翅对健康有好处。许多人相信鱼翅对健康有好处。Sharksareatthetopofthefoodchainintheoceansecosystem.Alotofpeoplebelievethatsharksfinsaregoodforhealth.Pay attention to the sentences.1.Wer

37、e trying to save the earth.2.The river used to be so clean.3.The air is badly polluted.4.No scientific studies have shown that shark fins are good for health.5.We should help save the sharks.Present progressiveused toPassive voicePresent perfectModal verbs现在进行时现在进行时:PresentProgressive结构结构:be(am/is/a

38、re)+v.-ing标志词：标志词：Look,Listen,now,rightnowe.g.Look!Theboyiscrying.定义：定义：表示说话时表示说话时(瞬间瞬间)正在进行正在进行的动作的动作,也表示目前或现阶也表示目前或现阶段正在进行的动作。段正在进行的动作。What a fine day today!Look!What are they doing?used to do sth.表示过去常常做某事表示过去常常做某事,而而现现 在往往不做了在往往不做了,后接动词原后接动词原 形。形。be used to doing sth.表示习惯于做某事表示习惯于做某事e.g.I used t

39、o get up at six oclock.Joe is used to drinking a cup of coffee every morning.usedtodo与与beusedtodoingTranslation.1.她过去常常周末和朋友闲逛。她过去常常周末和朋友闲逛。She used to hang out with friends on weekends.2.他习惯于每天晚上睡得很晚。他习惯于每天晚上睡得很晚。He is used to staying up.被动语态：被动语态：Passivevoice定义：定义：表示主语是动作的承受者，即行表示主语是动作的承受者，即行为动作的对

40、象的一种语态。为动作的对象的一种语态。结构：结构：be+过去分词过去分词e.g.Anewschoolwasbuiltlastyear.Ourclassroomiscleanedeveryday.去年，一所新学校修建了。去年，一所新学校修建了。我们的教室每天都打扫。我们的教室每天都打扫。Translate the sentences by using Passive voice.1.刚才一些老年人参观了博物馆。刚才一些老年人参观了博物馆。2.工人们使用不同种类的机器工作。工人们使用不同种类的机器工作。Themuseumwasvisitedbysomeoldpeoplejustnow.Differ

41、entkindsofmachinesareusedtoworkbytheworkers.结构结构:has/have+过去分词过去分词标志词：标志词：already,yet,ever,never,since,fore.g.Ihaventfinishedmyhomeworkyet.定义：定义：表示动作已经完成表示动作已经完成,但对现在造成影但对现在造成影响响;或者表示从过去某一时间开始一或者表示从过去某一时间开始一直延续到现在并还可能持续下去的直延续到现在并还可能持续下去的动作。动作。现在完成时现在完成时:PresentPerfectComplete the following sentences

42、.1.I_(be)inBeijingfortwoyears.2.I_never_(hear)ofthatmanbefore.3.Tom_(work)theresincetwoyearsago.havebeenhaveheardhasworked4.Thetwins_(wash)theclothesforanhour.5.He_(play)basketballsincethreeyearsago.6.Howlong_Sally_(sing)yet?havewashedhasplayedhassung1.情态动词本身有一定的词义情态动词本身有一定的词义,表示说表示说话人的情绪、态度或语气话人的情绪

43、、态度或语气,但不能单但不能单独作谓语独作谓语,只能与其他动词构成谓语。只能与其他动词构成谓语。常见的有常见的有:can(could),may(might),must,need,shall(should),will(would)等。等。情态动词情态动词2.情态动词无人称和数的变化情态动词无人称和数的变化,后接动词后接动词原形。否定式是在情态动词后面加原形。否定式是在情态动词后面加not。个别情态动词有过去式形式个别情态动词有过去式形式,可用来表可用来表达更加客气、委婉的语气。达更加客气、委婉的语气。e.g.Ken can climb up the tress like a koala.Trac

44、y could ride a bicycle when she was five years old.You mustnt play with fire.It is dangerous.Translation.1.我们不能在教室里吃东西。我们不能在教室里吃东西。2.首先你必须完成作业。首先你必须完成作业。3.他现在不可能在家。他现在不可能在家。4.她一定知道这个问题的答案。她一定知道这个问题的答案。Wecanteatintheclassroom.Youmustfinishyourhomeworkfirst.Hecantbeathomenow.Shemustknowtheanswertothis

45、question.4aFill in the blanks with the correct forms of the verbs in brackets.Joe:_youever_(take)partinanenvironmentalproject?Eric:Yes,Ihave.I_(help)withaClean-UpDaylastyear.Itwas_(consider)thebiggestclean-upprojectthiscity_ever_(have).Havetakenhelpedconsideredhadhad参加参加Joe:Howmanypeople_(take)part?

46、Eric:I_(think)morethan1,000people_(come)tohelpout.Joe:Thatsfantastic!Iguesseveryoneinthiscityis_(try)toimprovetheenvironment.Eric:Yes,wecantaffordto_(wait)anylongertotakeaction!tookthinkcametryingwaitv.承担得起承担得起(后果后果);买得起买得起4bFill in the blanks with the appropriatemodal verbs from the box.People_thin

47、kthatbigthings_bedonetosavetheearth.Manyforgetthatsavingtheearthbeginswithsmallthings.Forexample,you_savemay/mightmustcancanwouldcouldhavetoshouldmustmay/mightelectricitybyturningoffthelightswhenyouleavearoom.You_alsousereusablebagsinsteadofplasticbags.Ithinkitsagreatideathatyounow_payforplasticbags

48、insomestores.Andinsteadofdrivingtoschoolorwork,you_rideyourbikeorwalk.Ifitsfar,you_takethebus.Allthese couldhavetocan/shouldcan/could关掉关掉adj.可重复使用的可重复使用的付费付费;付出代价付出代价small things _ add up and become big things that _ improve the environment.Lets take action now!couldwould/can采取行动采取行动4cMake a list of

49、 things that people can do to help the environment and discuss your list with your partner.use public transportation(n.交通运输交通运输);turnoffthelightswhenyouleavearoom;usereusablebagsinsteadofplasticbags;rideyourbikeorwalktoschoolorwork;stopusingpapernapkins(餐巾纸餐巾纸);recyclebooksandpaperIthinkthateveryone

50、shouldusepublictransportation.Idisagree.Itsdifficultforparentswithyoungchildrentousepublictransportation1.Wecantaffordtowaitanylongertotakeaction!affordv.承担得起承担得起;提供提供,给予给予affordtodosth.(常与常与can,beableto连用连用)买得起买得起;有足够的有足够的e.g.Wecantaffordtopaysuchaprice.我们付不起这个价钱。我们付不起这个价钱。Dancingaffordsuspleasure.