+Unit13+We're+trying+to+save+the+earth!++Section+A+1a-2d 人教版九年级英语全册

Unit13We’retryingtosavetheearth!(Period1)SectionA(1a-2d)Weliveinabeautifulandpeacefulplace.

...But...FreetalkHowmanykindsofpollutiondoyouknowinourdailylife?airpollutionwaterpollutionnoisepollutionFreetalkWhatarethereasonsforthem?airpollutionwaterpollutionnoisepollutionlitterbottomfishermancoaluglyadvantagecostwoodenplastictakeawaybin乱扔/垃圾；废弃物底部；最下部渔民；钓鱼的人煤；煤块丑陋的；难看的优点；有利条件

(cost,cost)花费/花费；价钱木制的；木头的塑料的/塑料；塑胶外卖食物垃圾箱v./n.n.n.n.adj.n.v./n.adj.adj./n.n.n.Howmanykindsofpollutiondothesepicturesshow?1aHerearesomewordsrelatedtodifferentkindsofpollution.Writethemintheboxbelow.Thenaddmorewords.loudmusic cars rubbish planeslittering ships factories smokingbuildinghouses mobilephonesnoisepollutionairpollutionwaterpollution1aHerearesomewordsrelatedtodifferentkindsofpollution.Writethemintheboxbelow.Thenaddmorewords.loudmusic cars rubbish planeslittering ships factories smokingbuildinghouses mobilephonesnoisepollutionairpollutionwaterpollutionloudmusic,planes,buildinghouses,mobilephones(machines,crowds,vehicles)cars,factories,smoking,buildinghouses(burning,powerplants,nucleardisposal)rubbish,littering,ships,factories(sewage,industrialwaste,pesticides)1bListenandcompletethesentences.播放教材1b音频Whatwastheproblem?Theriverwas__________.Eventhebottomoftheriverwasfullof_______.Therewerenomore_____forfishermentocatch.Whatcausedtheproblem?Peoplearethrowing_______intotheriver.Factoriesareputting______intotheriver.Howshouldtheproblembesolved?Weshouldwritetothe__________andaskthemto__________thefactories.Everyoneshouldhelpto________theriver.reallydirtyrubbishfishlitterwastegovernmentclosedowncleanupListenandanswer.1．WhatdoesTonywanttodolaterthisafternoon?2．Whydoesn’tMarkwanttogowithTony?3．Howwastheriverinthepast?播放教材1b音频Tonywantstogoswimmingintheriverlaterthisafternoon.Becausetheriverwasreallydirty.Itusedtobesoclean.Mark:Theriverwasdirty.Eventhebottomoftheriverwasfullofrubbish.Tony:Butitusedtobesoclean!Mark:Yes,butpeoplearethrowinglitterintotheriver.Tony:Everyoneinthistownshouldplayapartincleaningitup!1cRole-playtheconversation.Thenmakeyourownconversationsaboutthekindsofpollutionin1a.usedtodosth.“过去常常……”，表示过去习惯性的动作但如今已不存在playapartindoingsth.“参与做某事;在做某事上起作用”dirty;bottom,rubbish;fishRetelltheconversation.WhyHowWhatlittering,puttingwasteintotheriverwriteto,closedown;helptocleanupA．landpollutionB．airpollutionC．noisepollutionD．waterpollutionBrainstorm→rubbish→dirty→throw→dustbin→cleanup...→gas→poisonous→produce→car→prevent...→sounds→unpleasant→make→city→reduce...→wastewater→chemical→pour→factory→cleanup...播放教材2a音频A．landpollutionB．airpollutionC．noisepollutionD．waterpollution2aListentotheinterview.CirclethekindsofpollutionthatJasonandSusantalkabout.2bListenagainandcompletethesentences.播放教材2b音频1．Theairisbadlypollutedbecausethereare________ontheroad

thesedays.2．Factoriesthatburncoalalso_______theairwithalotofblack

smoke.3．Thereisalsotoomuchrubbishandwaste.People_______________thingseveryday.4．Peoplearealsolitteringin____________likeparks.Thisisturning

beautifulplacesintouglyones.morecarspollutearethrowingawaypublicplaces2cUsetheinformationin2aand2btorole-playconversationsbetweenJasonandSusan.Jason:

Theairhasbecomereallypollutedaroundhere.I’mgettingveryworried.Susan:

Yes,Iusedtobeabletoseethestarsinthesky.Jason:

Theproblemisthat…Retellaccordingtothemindmapof2b.environmentalproblemstoomuchrubbishandwastebadlypollutedmorecarsburncoalalotofblacksmokelitterinpublicplacesinthestreetsFreetalkHowshouldtheybesolved?landpollutionairpollutionnoisepollutionwaterpollutionWhataretheytalkingaboutintheconversationin2d?Howtosolveairpollution.wastepollution.Whatareyourideasforsolvingairpollution/wastepollution?PollutionWaystosolvetheproblemAirpollutionWastepollutionRead

andfillinthechart.TakingthebusorsubwayinsteadofdrivingRidingabikeBringingabagtogoshoppingNevertakingwoodenchopsticksorplasticforkswhenwebuytakeawayfoodThrowingrubbishinthebinsandkeepingpublicplacescleanandbeautifulforeveryoneDoyouhaveanyotherwaystosolvetheproblem?Interviewer:JasonandSusan,whatareyourideasforsolvingtheseproblems?Jason:Well,tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdriving.Susan:Yeah,orrideabike.Thereareotheradvantagesofbikeriding.It’s

goodforhealthanditdoesn’tcostanything!Interviewer:Greatideas!Whataboutwastepollution?2dRole-playtheconversation.播放教材2d音频Susan:Mmm,Ithinksimplethingslikebringingabagtogoshoppingcanhelp.Istarteddoingthatayearago.Jason:Me,too.Also,InevertakewoodenchopsticksorplasticforkswhenIbuytakeawayfood.Iusetheonesathome.Susan:Andremembertothrowrubbishinthebinsandkeeppublicplacescleanandbeautifulforeveryone.Interviewer:Sotogether,ouractionscanmakeadifferenceandleadtoabetterfuture!2dRole-playtheconversation.播放教材2d音频1．Eventhebottomoftheriverwasfullof...甚至河底都堆满了……

bottom名词，意为“底部；最下部”，由其构成的常用短语为atthebottomof“在……的底部”。e.g.Hefelltothebottomofthestairs.他摔到了楼梯底下。

Theanswerisatthebottomofthepage.答案就在这一页的下端。atthebottomof1．Eventhebottomoftheriverwasfullof...甚至河底都堆满了……

助记2．Everyoneinthistownshouldplay

apartincleaningitup!

这个镇上的每个人都应该参与清理河流！playapartin意为“参与……；在……方面起作用”，相当于playarolein，后跟名词、代词或动词-ing形式。e.g.Hedidn’tplayapartinthecompetitionatall.他根本就没参加这次比赛。

Didyouplayapartinfighting？你参与打架了吗？拓展短语playapartin中，part前可加important、active等形容词，表达“发挥重要作用”“积极参与”等。e.g.Computersareplayinganimportantpartinourdailylife.电脑正在我们的日常生活中发挥着重要的作用。

Allthestudentsplayanactivepartintheschoolactivities.所有的学生都积极参加学校的活动。2．Everyoneinthistownshouldplayapartincleaningitup!

这个镇上的每个人都应该参与清理河流！3．Well,tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdriving.为了减少空气污染，我们应该乘公共汽车或坐地铁来代替开车。（1）句中动词不定式短语tocutdownairpollution作目的状语，相当于inordertocutdownairpollution。e.g.I’vewrittenitdowninthenotebook(in

order)torememberitwell.为了记得牢固，我已经把它写在笔记本上了。3．Well,tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdriving.为了减少空气污染，我们应该乘公共汽车或坐地铁来代替开车。（2）insteadof短语介词，意为“代替；而不是”，其后常跟名词、代词、动词-ing形式或介词短语等。e.g.Ihavecomeinstead

ofmybrother.Heisill.我替我哥哥来的，他病了。

Hegaveusahandinstead

oflaughingatuslastWednesday.上周三他不仅没嘲笑我们，反而帮了我们一把。3．Well,tocutdownairpollution,weshouldtakethebusorsubwayinstead

ofdriving.为了减少空气污染，我们应该乘公共汽车或坐地铁来代替开车。insteadof短语介词，意为“代替；而不是”，后接名词、代词、动词-ing形式或介词短语等做宾语，常位于句中instead副词，意为“代替；反而”，常位于句首或句末做状语，位于句首时常用逗号与后面的内容隔开辨析insteadof与insteadTheywillgoonvacationbyplaneinstead

ofbytrain.他们要坐飞机去度假，而不是坐火车。

Shedidn’tplaybasketballyesterday.Shewentshoppinginstead.她昨天没打篮球，而是去购物了。4．Thereareotheradvantagesofbikeriding.骑自行车还有其他的优点。advantage名词，意为“优点；有利条件”。其反义词为disadvantage“缺点；不利条件”。e.g.Thismachinehasmanyadvantages.这台机器有许多优点。

Hehastheadvantageofagoodeducation.他具有受过良好教育的优势。

Beforemakingyourdecision,youshouldconsidertheadvantagesanddisadvantages.在做出决定之前，你应该权衡一下利弊。5．It’sgoodforhealthanditdoesn’tcostanything!这对健康有好处，并且还不用花钱!

cost此处用作动词，意为“花费”；还可用作名词，意为“花费；价钱”。e.g.John’snewbicyclecost$160.约翰的新自行车花了160美元。

Thecostoflivinghereistoohigh.在此生活的费用太高。

Thecostofthecoatwas$21.这件大衣的价钱是21美元。5．It’sgoodforhealthanditdoesn’tcostanything!这对健康有好处，并且还不用花钱!单词主语常用搭配cost物sth.cost

(s)(sb.)+金钱spend人①sb.spend(s)+时间/金钱+onsth.②sb.spend(s)+时间/金钱+doingsth.pay人①sb.pay(s)+金钱+forsth.②sb.pay(s)forsth.takeitIttakessb.+时间+todosth.辨析cost、spend、pay与takeThecomputercostme$1,000.=Ispent$1,000onthecomputer.=Ipaid$1,000forthecomputer.我买这台电脑花了1000美元。

Ihavepaidforthehouse.我已经付了房款。

Ittookmeanhourtowritetheletter.我花了一个小时写这封信。6．Also,InevertakewoodenchopsticksorplasticforkswhenIbuytakeawayfood.还有，当我买外卖食物时我从来不拿木筷或塑料叉。（1）wooden(madeofwood)形容词，意为“木制的；木头的”。e.g.Thehousewasveryold,andithadallwoodenfloors.这所房子非常古老，地板都是木制的。①wood名词，意为“木头”。e.g.Canyougetthisnailoutofthewood?你能把这枚钉子从木头里拔出来吗?②woods意为“树林;林地”。e.g.Theywalkedthroughthewoods.他们漫步穿过树林。拓展6．Also,InevertakewoodenchopsticksorplasticforkswhenIbuytakeawayfood.还有，当我买外卖食物时我从来不拿木筷或塑料叉。助记woods树林woodenbridge木桥wood木头Cutdownthetreeinthewoodsandusethewoodtomakeawoodenbridge.6．Also,InevertakewoodenchopsticksorplasticforkswhenIbuytakeawayfood.还有，当我买外卖食物时我从来不拿木筷或塑料叉。（2）takeaway可数名词，意为“外卖食物”，复数形式是takeaways。e.g.Ifyoucan’tcook,takeawaysarefine.如果你不会做饭,（吃）外卖食物就很好。takeaway意为“拿走”，为“动词+副词”型短语，名词作宾语时，放在短语中间或后面均可；代词作宾语时只能放在短语中间。e.g.Thefoodsmellsterrible.Takeitaway.这食物很难闻，把它拿走。拓展7．Sotogether,ouractionscanmakeadif