+Unit13+We're+trying+to+save+the+earth!++Section+A+1a-2d 人教版九年級英語全冊

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

...But...FreetalkHowmanykindsofpollutiondoyouknowinourdailylife?airpollutionwaterpollutionnoisepollutionFreetalkWhatarethereasonsforthem?airpollutionwaterpollutionnoisepollutionlitterbottomfishermancoaluglyadvantagecostwoodenplastictakeawaybin亂扔/垃圾；廢棄物底部；最下部漁民；釣魚的人煤；煤塊丑陋的；難看的優(yōu)點；有利條件

(cost,cost)花費/花費；價錢木制的；木頭的塑料的/塑料；塑膠外賣食物垃圾箱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音頻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音頻Tonywantstogoswimmingintheriverlaterthisafternoon.Becausetheriverwasreallydirty.Itusedtobesoclean.Mark:Theriverwasdirty.Eventhebottomoftheriverwasfullofrubbish.Tony:Butitusedtobesoclean!Mark:Yes,butpeoplearethrowinglitterintotheriver.Tony:Everyoneinthistownshouldplayapartincleaningitup!1cRole-playtheconversation.Thenmakeyourownconversationsaboutthekindsofpollutionin1a.usedtodosth.“過去常?！?，表示過去習(xí)慣性的動作但如今已不存在playapartindoingsth.“參與做某事;在做某事上起作用”dirty;bottom,rubbish;fishRetelltheconversation.WhyHowWhatlittering,puttingwasteintotheriverwriteto,closedown;helptocleanupA．landpollutionB．a(chǎn)irpollutionC．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音頻A．landpollutionB．a(chǎn)irpollutionC．noisepollutionD．waterpollution2aListentotheinterview.CirclethekindsofpollutionthatJasonandSusantalkabout.2bListenagainandcompletethesentences.播放教材2b音頻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音頻Susan:Mmm,Ithinksimplethingslikebringingabagtogoshoppingcanhelp.Istarteddoingthatayearago.Jason:Me,too.Also,InevertakewoodenchopsticksorplasticforkswhenIbuytakeawayfood.Iusetheonesathome.Susan:Andremembertothrowrubbishinthebinsandkeeppublicplacescleanandbeautifulforeveryone.Interviewer:Sotogether,ouractionscanmakeadifferenceandleadtoabetterfuture!2dRole-playtheconversation.播放教材2d音頻1．Eventhebottomoftheriverwasfullof...甚至河底都堆滿了……

bottom名詞，意為“底部；最下部”，由其構(gòu)成的常用短語為atthebottomof“在……的底部”。e.g.Hefelltothebottomofthestairs.他摔到了樓梯底下。

Theanswerisatthebottomofthepage.答案就在這一頁的下端。atthebottomof1．Eventhebottomoftheriverwasfullof...甚至河底都堆滿了……

助記2．Everyoneinthistownshouldplay

apartincleaningitup!

這個鎮(zhèn)上的每個人都應(yīng)該參與清理河流！playapartin意為“參與……；在……方面起作用”，相當(dāng)于playarolein，后跟名詞、代詞或動詞-ing形式。e.g.Hedidn’tplayapartinthecompetitionatall.他根本就沒參加這次比賽。

Didyouplayapartinfighting？你參與打架了嗎？拓展短語playapartin中，part前可加important、active等形容詞，表達“發(fā)揮重要作用”“積極參與”等。e.g.Computersareplayinganimportantpartinourdailylife.電腦正在我們的日常生活中發(fā)揮著重要的作用。

Allthestudentsplayanactivepartintheschoolactivities.所有的學(xué)生都積極參加學(xué)校的活動。2．Everyoneinthistownshouldplayapartincleaningitup!

這個鎮(zhèn)上的每個人都應(yīng)該參與清理河流！3．Well,tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdriving.為了減少空氣污染，我們應(yīng)該乘公共汽車或坐地鐵來代替開車。（1）句中動詞不定式短語tocutdownairpollution作目的狀語，相當(dāng)于inordertocutdownairpollution。e.g.I’vewrittenitdowninthenotebook(in

order)torememberitwell.為了記得牢固，我已經(jīng)把它寫在筆記本上了。3．Well,tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdriving.為了減少空氣污染，我們應(yīng)該乘公共汽車或坐地鐵來代替開車。（2）insteadof短語介詞，意為“代替；而不是”，其后常跟名詞、代詞、動詞-ing形式或介詞短語等。e.g.Ihavecomeinstead

ofmybrother.Heisill.我替我哥哥來的，他病了。

Hegaveusahandinstead

oflaughingatuslastWednesday.上周三他不僅沒嘲笑我們，反而幫了我們一把。3．Well,tocutdownairpollution,weshouldtakethebusorsubwayinstead

ofdriving.為了減少空氣污染，我們應(yīng)該乘公共汽車或坐地鐵來代替開車。insteadof短語介詞，意為“代替；而不是”，后接名詞、代詞、動詞-ing形式或介詞短語等做賓語，常位于句中instead副詞，意為“代替；反而”，常位于句首或句末做狀語，位于句首時常用逗號與后面的內(nèi)容隔開辨析insteadof與insteadTheywillgoonvacationbyplaneinstead

ofbytrain.他們要坐飛機去度假，而不是坐火車。

Shedidn’tplaybasketballyesterday.Shewentshoppinginstead.她昨天沒打籃球，而是去購物了。4．Thereareotheradvantagesofbikeriding.騎自行車還有其他的優(yōu)點。advantage名詞，意為“優(yōu)點；有利條件”。其反義詞為disadvantage“缺點；不利條件”。e.g.Thismachinehasmanyadvantages.這臺機器有許多優(yōu)點。

Hehastheadvantageofagoodeducation.他具有受過良好教育的優(yōu)勢。

Beforemakingyourdecision,youshouldconsidertheadvantagesanddisadvantages.在做出決定之前，你應(yīng)該權(quán)衡一下利弊。5．It’sgoodforhealthanditdoesn’tcostanything!這對健康有好處，并且還不用花錢!

cost此處用作動詞，意為“花費”；還可用作名詞，意為“花費；價錢”。e.g.John’snewbicyclecost$160.約翰的新自行車花了160美元。

Thecostoflivinghereistoohigh.在此生活的費用太高。

Thecostofthecoatwas$21.這件大衣的價錢是21美元。5．It’sgoodforhealthanditdoesn’tcostanything!這對健康有好處，并且還不用花錢!單詞主語常用搭配cost物sth.cost

(s)(sb.)+金錢spend人①sb.spend(s)+時間/金錢+onsth.②sb.spend(s)+時間/金錢+doingsth.pay人①sb.pay(s)+金錢+forsth.②sb.pay(s)forsth.takeitIttakessb.+時間+todosth.辨析cost、spend、pay與takeThecomputercostme$1,000.=Ispent$1,000onthecomputer.=Ipaid$1,000forthecomputer.我買這臺電腦花了1000美元。

Ihavepaidforthehouse.我已經(jīng)付了房款。

Ittookmeanhourtowritetheletter.我花了一個小時寫這封信。6．Also,InevertakewoodenchopsticksorplasticforkswhenIbuytakeawayfood.還有，當(dāng)我買外賣食物時我從來不拿木筷或塑料叉。（1）wooden(madeofwood)形容詞，意為“木制的；木頭的”。e.g.Thehousewasveryold,andithadallwoodenfloors.這所房子非常古老，地板都是木制的。①wood名詞，意為“木頭”。e.g.Canyougetthisnailoutofthewood?你能把這枚釘子從木頭里拔出來嗎?②woods意為“樹林;林地”。e.g.Theywalkedthroughthewoods.他們漫步穿過樹林。拓展6．Also,InevertakewoodenchopsticksorplasticforkswhenIbuytakeawayfood.還有，當(dāng)我買外賣食物時我從來不拿木筷或塑料叉。助記woods樹林woodenbridge木橋wood木頭Cutdownthetreeinthewoodsandusethewoodtomakeawoodenbridge.6．Also,InevertakewoodenchopsticksorplasticforkswhenIbuytakeawayfood.還有，當(dāng)我買外賣食物時我從來不拿木筷或塑料叉。（2）takeaway可數(shù)名詞，意為“外賣食物”，復(fù)數(shù)形式是takeaways。e.g.Ifyoucan’tcook,takeawaysarefine.如果你不會做飯,（吃）外賣食物就很好。takeaway意為“拿走”，為“動詞+副詞”型短語，名詞作賓語時，放在短語中間或后面均可；代詞作賓語時只能放在短語中間。e.g.Thefoodsmellsterrible.Takeitaway.這食物很難聞，把它拿走。拓展7．Sotogether,ouractionscanmakeadif