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

lesson3 unnaturaldisasters exercise1 whichofthedisastersinthekeywordsdoyouthinkare a causedbypeople b madeworsebypeople c natural keywords disastersdroughts earthquakes floods forestfires hurricanes landslides tsunami typhoon volcaniceruptions windstorms exercise2 readthearticleandcheckyouranswerstoexercise1 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 hurricanes exercise3 usethestrategiestocompletethegapsinthetext 1 5 withthesesentences a g therearetwoextrasentencesyoudonotneed 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 exercise4 readthetextagainandanswerthesequestions whatistheattitudeofthejournalisttowardsthefuture whoaremostlikelytobethevictimsofnaturaldisasters whyaretherenowmorehurricanes floodsanddroughts whyarevolcanoesandearthquakesmoredangerousnow whatcouldbethebiggestthreattotheplanetinthefuture whateffectsmightthisthreathave answers 1 pessimistic2 poorpeople3 overpopulationandmismanagermentoftheworld sresources4 becausehalftheworld spopulationlivesincitieswithinrangeofvolcaniceruptionsandearthquakes5 avolcaniceruption6 itmightplungetheplanetintowinterforyears exercise5 lookatthewordsformthetext 1 10 andtheotherexamplesinbrackets matchtheprefixeswiththemeanings a j overpopulation overgrown oversleep substandard subway submarine deforestation defuse dehydration downhill downstream downgrade undernourished underpaid undercooked rebuild replace rewind unstable unusual uncommon semi active semi circle semi final multinational multi purpose multi racial mismanagement misunderstand misplace again f oppositeofanactionwrongs g notenoughbelow g downwardstoomuch i oppositeofanadjectivemany j partly half answers 1 d 2 c 3 f 4 h 5 g 6 a 7 i 8 j 9 e 10 b exercise6 completethesentenceswithwordsformexercise5inasuitableform afterthestormtheyhadtohundredsofhouseswhichhadbeendamaged 2 manypeopleinthedevelopingworldsufferfromdiseasesbecausetheyareofthecompetition 3 ourteamwasknockedoutintheofthecompetition 4 thebombwasabouttogooffbuttheexpertsmanagedtoit 5 ithequestionandfailedtheexam 6 iyesterdayandarrivedanhourlateforclass 7 alotofhousescollapsedintheerathquakebecauseofconstruction 8 floodsarenotthesedays theyhappenmoreandmoreoften answers rebuild2 undernourished3 semi final4 defuse5 misunderstood6 overslept7 sub standard8 unusual exercise7 workinpairs discussthesequestions whatnaturaldisastershavehappenedinthelastfewmonths whatdoyouthinkgovernmentscandotohelppreventnaturaldisasters 3 what