高中英语Unit 22 Lesson 3 Natural Disasters 课件2北师大版选修8 课件VIP免费

Lesson3Lesson3UnnaturalUnnaturalDisastersDisasterswhichofthedisastersinthekeywordsdoyouthinkare:(a)causedbypeople?(b)madeworsebypeople?(c)natural?Keywords:disastersdroughts,earthquakes,floods,Forestfires,hurricanes.Landslides,tsunami,typhoon,Volcaniceruptions,windstormsReadthearticleandcheckyouranswerstoexercise1.readingstrategies:completingTextswithsentencegaps(a)readthetexttogetthegeneralidea.(b)readaparagraphwithasentencegapandidentifythetopic,e.g.disasters.(c)readthesentencesbeforeandafterthegapandlookforcluesaboutthemissingsetence,e.g.isitanexampleofwhatismentionedbefore?(d)certainwordsmayhelpyou:timereferences(then).pronounreferences(it,that),linkingwords(however),(e)decidewhichsentencegoesinthegap.checkthatitfitsthesentencesbeforeandafterit.ANSWERS:Causedbypeople:forestfiresMadeworsebypeople:hurricanesNatural:floods,droughts,windstorms,earthquakes,volcaniceruptions,forestfires,hurricanesUsethestrategiestocompletethegapsinthetext(1-5)withtheseSentences(a-g).Therearetwoextrasentencesyoudonotneed.(a)Butgeologicalevidenceshowsthat73.000yearsagotherewasamuchgreatereruption.(b)Evenprosperouseuropehassufferedandlargeareasoffrance,britainandgermanyhaveallbeenunderwaer.(c)Thatisprobablynotthemostimportantfactoreither.(d)third,theotherbitsoflandyoumighthavebeenabletofarmarenowuseless.(e)Ontopofallthat,addclimatechangeandthespectreofglobalwarming.(f)Forexample,theyellowriver,oncenotoriousfortloodingthechineselandscape,failedtoreachtheseaatallon226daysin1997(g)Oneanswerisover-population.(1)(2)(3)(4)(5)Readthetextagainandanswerthesequestions.1Whatistheattitudeofthejournalisttowardsthefuture?2Whoaremostlikelytobethevictimsofnaturaldisasters?3Whyaretherenowmorehurricanes,floodsanddroughts?4Whyarevolcanoesandearthquakesmoredangerousnow?5Whatcouldbethebiggestthreattotheplanetinthefuture?6Whateffectsmightthisthreathave?Answers1.Pessimistic2.Poorpeople3.Overpopulationandmismanagermentoftheworld’sresources4.Becausehalftheworld’spopulationlivesincitieswithinrangeofvolcaniceruptionsandearthquakes5.Avolcaniceruption6.Itmightplungetheplanetintowinterforyears.Lookatthewordsformthetext(1-10)andtheotherexamplesInbrackets,matchtheprefixeswiththemeanings(a-j).(1)overpopulation(overgrown,oversleep)(2)Substandard(subway,submarine)(3)deforestation(defuse,dehydration)(4)downhill(downstream,downgrade)(5)undernourished(underpaid,undercooked)(6)rebuild(replace,rewind)(7)Unstable(unusual,uncommon)(8)Semi-active(semi-circle,semi-final)(9)Multinational(multi-purpose,multi-racial)(10)Mismanagement(misunderstand,misplace)(a)Again(f)oppositeofanaction(b)Wrongs(g)notenough(c)Below(g)downwards(d)Toomuch(i)oppositeofanadjective(e)Many(j)partly/halfAnswers:1.d)2.c)3.f)4.h)5.g)6.a)7.i)8.j)9.e)10.b)Completethesentenceswithwordsformexercise5inasuitableform.(1)Afterthestormtheyhadtohundredsofhouseswhichhadbeendamaged.(2)Manypeopleinthedevelopingworldsufferfromdiseasesbecausetheyareofthecompetition.(3)Ourteamwasknockedoutintheofthecompetition.(4)Thebombwasabouttogooffbuttheexpertsmanagedtoit.(5)Ithequestionandfailedtheexam.(6)Iyesterdayandarrivedanhourlateforclass.(7)Alotofhousescollapsedintheerathquakebecauseofconstruction.(8)Floodsarenotthesedays;theyhappenmoreandmoreoften.Answers:1.Rebuild2.undernourished3.semi-final4.Defuse5.misunderstood6.overslept7.sub-standard8.unusualWorkinpairs.Discussthesequestions.(1)Whatnaturaldisastershavehappenedinthelastfewmonths?(2)Whatdoyouthinkgovernmentscandotohelppreventnaturaldisasters?(3)Whatorganisationsdoyouknowthatprovideenvironment?(4)Whatcanwedoasindividualstoimprovetheenvironmentandhelpvictimsofnaturaldisasters?NaturaldisastersExercise2inpage56