沪教版九年级（初三）英语下册Unit 3 The environment（Reading）_课件1.ppt

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1、（Reading）Unit3TheenvironmentWarmingupWhatdothepicturestellus?Haveadiscussion:Whatwillhappentotheearthifwekeeppollutingit?Howcanwereducepollution?Ourearthisindanger!What isthegreenhouseeffect?A1Whatdoyouknowaboutthegreenhouseeffect?Matchthefirsthalfof

2、thesentencesincolumnAwiththesecondhalfincolumnB.Writethecorrectlettersintheblanks.Thereisanatmosphere.ItcontrolsHowever,wearepollutingThegasescausetheatmosphereTheEarthisgettingWecallthisAthegreenhouseeffectBtheEarthwithharmfulgasesCwarmerandwarmerDt

3、okeepintoomuchheatfromtheSunEaroundtheEarthFtheEarth'stemperatureABThegreenhouseeffect温室效应Whatcanwedo?FinishatestHowgreenareyou?1.DoyourecycleA:newspapers?1'B:tins?1'C:plasticbags?2'2.Whenyoumakeashortjourney,doyouA:walkorcycle?3'B:gobycar?0'C:gobypu

4、blictransport?1'3.Whattypeofbagsdoyouuseforshopping?A:reusable(e.g.,basket)3'B:reusedplastic1'C:newplastic0'4.Howmanypiecesofelectricalequipmentareusedinyourkitchen?A:10ormore0'B:5to91'C:below52'5.Doyoumakesurethatlightsandotherelectricalequipmentare

5、switchedoffwhennotneeded?A:nearlyalways2'B:seldom1'C:never0'6.Doyouusedisposablechopsticks?A:often0'B:seldom1'C:never2'7.Doyouusepapertissues?A:often0'B:seldom1'C:never2'8.Doyouusuallytake?A:abath0'B:ashower1'Whoisthegreenestinyourclass?Lookatthepict

6、ures,thetitle,theintroductionandthesub-headingsofthearticleonpage35.Thenanswerthequstionsbelow.BeforeyoureadTheworldisindangerThemainproblemsweface.Thegreenhouseeffect,cuttingdownforestsandbadhabits.Agreenconsumerissomeonewhoonlybuysproductsfriendlyt

7、otheenvironment.1.Whatisthearticlemainlyabout?2.Whatproblemsdoesthearticlediscuss?3.Aconsumerissomeonewhobuysandusesthings.Canyouguesswhatagreenconsumeris?ReadingReadingTips在阅读每个段落时，要注意综合运用略读(skimming)与扫读(scanning)这两种方法。略读(skimming)只看文章标题、下标题以及每个部分或者

8、段落第一行，关注文章中反复出现的关键词。略读时，要用充足的时间读懂段落的第一句和第二句，因为第一句往往是该段的主题句(topicsentence)，而第二句往往是对前句的延伸(extension)或进一步的解释(explanation)。通过略读把握文章大意Now,skimmingtogetmainideas.Readthefirstparagraphandfindoutthemainidea.Ourworldisindanger.Readthesecondparagraphandfindout