Unit

2

SavingtheEarth

Topic2Alltheseproblemsareveryserious.

SectionC學(xué)習(xí)目標(biāo)學(xué)習(xí)環(huán)境問(wèn)題相關(guān)的單詞和短語(yǔ)。了解環(huán)境問(wèn)題形成原因和影響。提高閱讀和分析文章的能力知識(shí)梳理Keypoints1.Somethingswehavedoneareverygoodfortheearthwhileothersarebad.

我們所做的一些事情對(duì)地球有益，然而其他一些對(duì)地球卻有負(fù)面影響。

※

Wehavedone…前省略了that,作定語(yǔ)從句，修飾前面的somethings.

※begoodfor對(duì)……有益；

begoodat=dowellin

擅長(zhǎng)……;

eg:Doingmorningexercisesisgoodforourhealth.

做早操對(duì)我們的健康有益。

Heisgoodatswimming.他擅長(zhǎng)游泳。ReviewHowcanweprotecttheenvironment?shoulddoplant____________________wildanimalsdo___________wecancareformoretreeseverything1.Theteacherssaidthatthesun______intheeast.A.roseB.riseC.risesD.risen2.Theywent_______tothehospitaltoseetheman.A.directB.directlyC.hardlyD.slow3.Ihavenotimetoeathere,soIwantto______thefood.A.takeoff B.takeupC.takedown D.takeawayCBDReviewHowcanweprotecttheenvironment?shouldn’tdo_______rubbishhereandthere_______anywhereinpublic________ongrassorpick_________leavespitwalkflowersKeypoints※①

while

conj.而，然而，相當(dāng)于but.表示對(duì)比；eg:Heisaworker,whileIamateacher.他是工人而我是教師。

②whileconj.

引導(dǎo)時(shí)間狀語(yǔ)；eg:Whileshewaslisteningtotheradio,shefellasleep.她聽(tīng)著收音機(jī)睡著了。③whileconj.

引導(dǎo)讓步狀語(yǔ)從句，意思是“雖然……但是……”、“盡管……但是……”(多放于句首)；eg:Whileheloveshisstudents,heisverystrictwiththem.雖然他愛(ài)他的學(xué)生，可是他對(duì)他們很?chē)?yán)格。④whileconj.

引導(dǎo)條件狀語(yǔ)，意思是“只要”；eg:Whilethereislifethereishope.只要生命存在，就有希望。⑤while作名詞用，表示“一會(huì)兒”“一段時(shí)間”；eg:Shelikestoliedownforawhileafterlunch.她喜歡午飯后躺一會(huì)兒。takeawayDoyouwantthattoeatinor

take

away?oxygenholeozonelayerKeypoints1.Asaresult,manyriversandlakesarenowdead.結(jié)果，許多河流和湖泊都死了。※asaresult

因此，結(jié)果Eg:因此，他們會(huì)非常具有說(shuō)服力。

Asaresult,theycanbeverypersuasive.※bedead死氣沉沉Keypoints2.Theearthistakenaway.泥土被帶走。

takeaway拿走、帶走Eg:難道你要拿走他們的鉛筆嗎？Areyougoingtto

theirpencils?takeawayradiationdirectlyKeypointsItcausestheleveloftheoceanstoriseandtheclimateoftheearthtochange.它導(dǎo)致了海平面的上升以及地球氣溫的變化。theleveloftheoceans

海平面cause

造成、使(發(fā)生)※cause…todo…Eg:這個(gè)壞消息使她傷心。

Thebadnewscausedherto

besad.※causesth.Eg:吸煙可導(dǎo)致肺癌。Smokingmaycauselung

cancer.KeyPoints溫室效應(yīng)海平面causesb./sth.todosth.導(dǎo)致某人/某物做某事

Carbondioxide(CO2)intheairhasincreasedalot.Itmainlycomesfromburningoil,coalandwood.Thishasformedablanketaroundtheearth.Theheatfromthesuncan’tescapesothetemperatureisrising.Thisiscalled“thegreenhouseeffect”.Itcausestheleveloftheoceanstoriseandtheclimateoftheearthtochange.Alltheseproblemsareveryserious,sowemustdosomethingnow.上升Task1Readthepassageandfindoutthephrases1.在地球上_______________________________

2.在這期間_______________________________

3.在很多方面_______________________________

4.全世界_______________________________

5.數(shù)以百萬(wàn)計(jì)的_______________________________

6.帶走_(dá)___________________________________________

7.有健康問(wèn)題_______________________________

9.穿過(guò)_______________________________

10.提及（1b）_______________________________

11.環(huán)境問(wèn)題（1b）_______________________________

ontheearth=on

Earthduringthisperiodinmanywaysallovertheworld=aroundtheworld=acrosstheworldmillionsoftakeawayhavehealthproblems

passthroughrefertoenvironmentalproblems12.臭氧層

ozone

layer

13.二氧化碳

carbon

dioxide

14.溫室效應(yīng)

the

greenhouse

effect

ozone

layercarbon

dioxidethe

greenhouse

effect15.究竟，到底__________onearth

Carbondioxide(CO2)intheairhasincreasedalot.Itmainlycomesfromburningoil,coalandwood.Thishasformedablanketaroundtheearth.Theheatfromthesuncan’tescapesothetemperatureisrising.Thisiscalled“thegreenhouseeffect”.Itcausestheleveloftheoceanstorise

andtheclimateoftheearthtochange.Alltheseproblemsareveryserious,sowemustdosomethingnow.KeyPoints溫室效應(yīng)導(dǎo)致海平面causesb./sth.todosth.導(dǎo)致某人/某物做某事上升Whatshouldwedotoprotectourenvironment?PlantmoretreesThrowgarbageintothetrashcanUseclothbagsforshoppingPost-readingTurnoffthelightLowcarbontravel,usingpublictransportationsuchasbusesPost-reading重點(diǎn)句子1.Somethingswehavedoneareverygoodfortheearthwhileothersarebad.我們做的一些事情對(duì)地球非常有益，而另一些是有害的。

2.Allovertheworld，peoplehavecutdownmillionsoftrees.在全世界，人們已經(jīng)砍伐了數(shù)百萬(wàn)棵樹(shù)。

我們做的一些事情對(duì)地球非常有益，而另一些是有害的。

在全世界，人們已經(jīng)砍伐了數(shù)百萬(wàn)棵樹(shù)。

3.Whenitrainsorwhenthewindblows，theearthistakenaway.當(dāng)刮風(fēng)下雨的時(shí)候，土就被刮走或沖走。

當(dāng)刮風(fēng)下雨的時(shí)候，土就被刮走或沖走。

While-readingTask4Completethenotesaccordingto1a(Para2-6)ProblemEffect（影響、結(jié)果)ontheenvironment

harmfulradiationreachestheearth,causecancerfactorypollutiontheozoneholemoreCO2greenhouseeffect(溫室效應(yīng)）,levelofoceansrising,climatechangefewertreestrafficpollutioncarsandbusespolluteair,healthproblemsforestsbecomedeserts,animalsandplantsdisappearpollutelandandwater,riversandlakesdeadProtectingtheenvironmentiseveryone'sresponsibility.Post-readingCombinethekeypointsin1cand2toformashortpassageandpayattentiontotheproperlinkingwords.Asweallknow,waterpollutionisbecomingmoreandmoreserious.Somefactoriespourwastewaterintotherivers.Asaresult,itmakesthewaterdirtyandsmellterrible.Mostoffishinthewaterhavediedandwecan’tswiminthewater.Waterisveryimportanttohumanbeings,soweshoulddoourbesttoprotectandsaveit.Luckily,ourgovernmentistakingmeasurestoprotectthewaterfrompollution.Youcanwriteitlikethis:TryhardOKGoodExcellentReadandwritenewwords.Learnsomeexpressionstodescribepollutionandenviron