人教版九年級英語下Unit 13第1課時(A 1a-2d)課件

Unit13We’retryingtosavetheearth!R·九年級下冊SectionA1a-2dNewwords亂扔；垃圾；廢棄物v.&n.底部；最下部n.漁民；釣魚的人n.煤；煤塊n.litterbottomfishermancoal丑陋的；難看的adj.ugly優(yōu)點；有利條件n.

advantagewoodenplasticcost塑料的；

adj.塑料；塑膠n.花費；價錢n.

木制的；木頭的adj.takeawaybin/'te?k?we?//b?n/外賣食物n.垃圾箱n.litterLet’sreadbottomcoalfishermanuglyadvantagecostwoodenplastictakeawaybin×Don’t________!litterThefishliveatthe_______ofthesea.bottom___________fisherman_________chairsandtable_______bagwoodenplastic_________uglyLead-inWatchavideoandsaywhatyoufind.The_______ispolluted.earth_______pollution_______pollutionairwater_______pollutionnoiseDoyouknowanyotherkindsofpollution?Herearesomewordsrelatedtodifferentkindsofpollution.Writethemintheboxbelow.Thenaddmorewords.loudmusiccarsrubbishplaneslitteringshipsfactoriessmokingbuildinghousesmobilephones1anoisepollutionairpollutionwaterpollutionloudmusicplanesbuildinghousesmobilephonesmachinescrowdsvehiclescarsfactoriessmokingbuildinghousesburningpowerplantsrubbishlitteringshipsfactoriessewageLanguagepointsnoisepollution噪音污染

pollution為不可數(shù)名詞，意為“污染；污染物”，其動詞形式為pollute。例句：這條河中有大量的污染物。There’slotsofpollutionintheriver.例句：如果你在晚上發(fā)出吵鬧聲的話，我的狗會叫。Ifyoumakenoisesatnight,mydogwillbark.noise為名詞，意為“噪音”，形容詞形式為noisy【辨析】noise,sound與voicenoisesoundvoice意為“噪音，喧鬧聲”，常指不悅耳、不和諧的嘈雜聲。泛指自然界的各種聲音。一般指人的嗓音，如說話、唱歌、談笑聲等。Don’tmake_______intheclass!Lighttravelsmuchfasterthan________.Thegirlhasasweet_______.用noise,sound與voice填空。noisesoundvoiceListenandcompletethesentences.Whatwastheproblem?Theriverwas___________.Eventhebottomoftheriverwasfullof________.Therewerenomore_____forfishermentocatch.reallydirtyrubbishfish1bWhatcausedtheproblem?Peoplearethrowing_______intotheriver.Factoriesareputting_______intotheriver.Howshouldtheproblembesolved?Weshouldwritetothe____________andaskthemto___________thefactories.Everyoneshouldhelpto_________theriver.litterwastegovernmentclosedowncleanupTony:Hey,Mark,maybewecouldgoswimmingintheriverlaterthisafternoon.Mark:Idon’tthinkIwanttogo,Tony.Tony:Whynot?Mark:Iwastherelastweekendandtheriverwasreallydirty.Eventhebottomoftheriverwasfullofrubbish,andtherewerenomorefishforfishermentocatch.Tapescripts:下午晚些時候河底Tony:Noway!Itusedtobesoclean.Infact,ithasalwaysbeenthenicestriverinthistown.Mark:Notanymore.Ithinkpeoplearethrowinglitterintotheriver.Factoriesarealsoputtingwasteintotheriver.不可能再也不是了Tony:That’sterrible!Weshouldwritetothegovernment.Theyshouldclosedownthefactories.Mark:Goodidea!ButIthinkeveryoneinthistownshouldhelptocleanuptheriver,too.Everyoneshouldplayapart,notjustthegovernment.關(guān)閉參與Role-playtheconversation.Thenmakeyourownconversationsaboutthekindsofpollutionin1a.Theriverwasdirty.Eventhebottomofthe

riverwasfullofrubbish.

1cButitusedtobesoclean!

Everyoneinthistownshouldplayapartincleaningitup!

Yes,butpeoplearethrowinglitterinto

theriver.

Role-playTheairwasdirty.Thesmokefromfactorieswasblack.Butitusedtobesoclean!

Weshouldwritetothegovernmentandaskthemtoclosedownthefactories.Yes,butpeoplearepollutingtheair.

Languagepoints1.Butitusedtobesoclean!

usedto為固定結(jié)構(gòu)，意為“曾經(jīng)；過去常?！保硎具^去存在或經(jīng)常發(fā)生但現(xiàn)在已經(jīng)停止的行為或習(xí)慣，后接動詞原形。例句：我們曾在倫敦居住過。

WeusedtoliveinLondon.

否定結(jié)構(gòu)：

主語+didn’t+useto+動詞原形.

主語+usedn’tto+動詞原形.一般疑問句：

Did+主語+useto+動詞原形+其他?

Used+主語+to+動詞原形+其他?例句：她過去不常來。Shedidn’tusetocome.Sheusedn’ttocome.【拓展】be/getusedto(doing)sth.表示“習(xí)慣于（做）某事”。例句：我習(xí)慣早起。Iamusedtogettingupearly.MakeupsentencesMikeMike

usedtoplaythepiano.肯定句：否定句：Mikedidn’tuse/usedn’ttoplaythepiano.MaryMaryusedtodance.肯定句：否定句：Marydidn’tuse/usedn’ttodance.2.Everyoneinthistownshouldplayapartincleaningitup!

playapartin意為“參與某事；在……方面起作用”，后接名詞、代詞或動詞-ing形式。例句：我想?yún)⒓訉W(xué)校活動。Iwanttoplayapartinschoolactivities.構(gòu)成短語：

playanactivepartin(doing)sth.積極參與（做）某事

playanimportantpartin(doing)sth.在（做）某事中發(fā)揮重要作用Listentotheinterview.CirclethekindsofpollutionthatJasonandSusantalkabout.2aA.landpollution

B.airpollutionC.noisepollutionD.waterpollution2bListenagainandcompletethesentences.1.Theairisbadlypollutedbecausethereare_____

_____ontheroadthese

days.2.Factoriesthatburncoalalso_______theair

with

alotofblacksmoke.carspollutemore3.Thereisalsotoomuchrubbishandwaste.People

_________________thingseveryday.4.Peoplearealsolitteringin____________likeparks.

Thisisturningbeautifulplacesintouglyones.arethrowingawaypublicplacesTapescripts:Interviewer:Todaywe’retalkingtoJasonandSusanaboutenvironmentalproblems.JasonandSusan,canyoutellusaboutsomeoftheproblemsyou’veseen?Jason:Ithinkoneproblemisthattheairisbadlypolluted.Ihardlyeverseeblueskiesanymore.Susan:Yes,andIusedtoseethestarsclearly.Interviewer:Whatdoyouthinkhascausedthisproblem?Susan:Well,therearemorecarsontheroadthesedays.Jason:Andfactoriesthatburncoalalsopollutetheairwithalotofblacksmoke.Interviewer:Whatotherproblemsdoyousee?Susan:Iguessthere’stoomuchrubbishandwasteinthestreets.①②Jason:Yes!Everydaypeoplearethrowingawaythingslikewoodenchopsticks,plasticbowlsandplasticbags.Susan:They’realsolitteringinpublicplaces,forexample,duringpicnicsinparks.Thisisturningbeautifulplacesintouglyones.Interviewer:You’reright.Theseareseriousproblemsforourenvironment.Next,let’stalkaboutthethingswecandotohelp.③④Usetheinformationin2aand2btorole-playconversationsbetweenJasonandSusan.Theairhasbecomereallypollutedaroundhere.I’mgettingveryworried.Yes,Iusedtobeabletoseestarsinthesky.Theproblemisthat…2cThereistoomuchrubbishandwasteinourcityYes,peoplearelitteringinpublicplaces.Thisisturningbeautifulplacesintouglyones.2dRole-playtheconversation.Interviewer:JasonandSusan,whatareyourideas

forsolvingtheseproblems?

Jason:Well,tocutdown

airpollution,weshould

takethebus

orsubwayinsteadofdriving.

Susan:Yeah,orrideabike.Thereareother

advantagesof

bikeriding.It’sgoodfor

healthanditdoesn’tcostanything!代替，而不是優(yōu)勢，優(yōu)點Interviewer:Greatideas!Whataboutwastepollution?Susan:Mmm,Ithinksimplethingslikebringing

abagtogoshopping

canhelp.Istarted

doingthatayearago.

Jason:Me,too.Also,InevertakewoodenchopsticksorplasticforkswhenIbuytakeawayfood.Iusetheonesathome.bring的反義詞是take外賣食物Susan:Andremembertothrowrubbishinthe

binsandkeep

publicplacescleanand

beautifulforeveryone.Interviewer:Sotogether,ouractionscanmakeadifferenceandleadtoabetterfuture!起作用；有影響導(dǎo)致Readandfinishthetask.WaystocutdownairpollutiontakethebustakethesubwayrideabikeWaystocutdownwastepollutionbringabagtogoshoppingneverusewoodenchopsticksorplasticforksthrowrubbishinthebinsLanguagepoints1.Weshouldtakethebusorsubwayinsteadofdriving.

insteadof意為“代替，而不是”，后面常跟名詞、代詞或動詞-ing形式。

insteadofdoingsth.代替做某事例句：她沒有待在家里而是去上學(xué)了。Shewenttoschoolinsteadofstayingathome.【辨析】insteadof與insteadinsteadofinstead介詞短語，其后可跟名詞、代詞或v-ing形式。NowIcandrivetoworkinsteadofwalking.副詞，常位于句末，位于句首時，其后有逗號。Hedidn’treply.Instead,helefttheroom.介詞短語副詞2.Mmm,Ithinksimplethingslikebringingabagtogoshoppingcanhelp.

bring此處作及物動詞，意為“帶來；取來”，反義詞為take，意為“拿走”。bringsth./sb.to+地點把某物/某人帶到某地【辨析】bring與takebringtake帶來；拿來帶走；拿走從別處帶到說話者所在地從說話者所在地帶到別處去Don’tforgetto________yourhomeworkheretomorrow.We’ll_______thestudentstothemuseum.takebring3.Ouractionscanmakeadifferenceandleadtoabetterfuture!makeadifference起作用；有影響makeadifferenceto...對……產(chǎn)生影響注意：difference前面可加修飾語，如big,great等，表示受影響的程度。例句：鍛煉對她產(chǎn)生了重大影響。Exercisemadeabigdifferencetoher.短語：makenodifference

沒有影響；無關(guān)緊要

makeallthedifference

關(guān)系重大；大不相同課堂小結(jié)1.fisherman復(fù)數(shù)fishermen2.advantage反義詞disadvantage3.woodenadj.woodn.4.harmfuladj.harmn.5.scientificadj.scientist/sciencen.6.cause/solvetheproblem引發(fā)/解決問題7.makeadifference影響；有作用8.insteadof代替；而不是9.takeaction采取行動10.takepartin參加11.這個鎮(zhèn)上的每一個人都應(yīng)該參與清理它!

Everyoneinthistownshouldplayapartin

cleaningitup

!12.為了減少空氣污染,我們應(yīng)該乘公共汽車或地鐵,

而不要開車。Tocutdownairpollution,weshouldtakethe

busorsubwayinsteadofdriving.13.它對健康有益并且不用花費任何東西！

It’sgoodforhealthanditdoesn’tcostanything!Exercise一、用動詞的適當(dāng)形式填空。1.We