资料简介
TheSixthPeriod●从容说课Inthisperiod，Teacherwillhelptotrainthestudents’reading，listeningandspeakingskills.IntheReadingpart，thestudentsshouldnotonlyunderstandingthewholepassage，butalsotrytocompareitwiththereadingpassageonPage26.Comparethewaysthatthewritersusedtodescribethefactsandfeelings.AftercomparisonthestudentswillknowthatthewriteroftheSanFranciscoquakedescribedmorefeelings.Sothenthestudentsareaskedtoreadthethirdparagraphwithfeeling.Readingwithemotionsisoftenignoredbyteachersandstudents.Butitcanreallyimprovethestudents’understandingofthepassage.InListeningpart，thestudentswillfirstusewhattheyhavelearntinthefirstperiodtofillintheform.Thentheywilllistentothetapeseveraltimestofinishthetask.Thisstepdoesn’tonlyprovidethestudentsachancetotraintheirlisteningabilitybutalsoprovidethemknowledgeabouthowtoproduceanearthquakeplan，whichisveryusefulandpractical.Thenthestudentswillchooseitemsforthepersonalearthquakebag.Theyshouldmakegoodchoicesaswellasexplainthereasonswhytheychoosetheseitemsinsteadofthose.Likethepreviousstep，thisstepalsotrainsthestudents’speakingandprovidesthemwithsomeusefulknowledge.●三维目标1.Knowledge：（1）LearnapassageabouttheSanFranciscoEarthquake.（2）Learnhowtomakeanearthquakeplan.（3）Learnwhattocontaininapersonalearthquakebag.2.Ability：（1）Learntocomparetwosimilarpassages.（2）Trainthestudents’listeningability.（3）Trainthestudents’speakingability.（4）Learntofindreasonsfortheirchoices.3.Emotion：（1）Learntocooperatewithothers.（2）LearnfromthebraveryofpeopleofSanFranciscotofacethereality.●教学重点（1）Trainthestudents’listeningability.（2）Trainthestudents’speakingability.（3）LearnapassageabouttheSanFranciscoEarthquake.●教学难点（1）Learntocomparetwosimilarpassages.（2）Learntofindreasonsfortheirchoices.●教具准备（1）ataperecorder（2）aprojector（3）theblackboard●教学过程Step1GreetingsGreetthewholeclassasusual.4,Step2RevisionT：Inthesecondperiod，youlearntsomedetailedinformationabouttheTangshanEarthquake.Canyouusefewerthanfivesentencestosummarizethepassage？S：Letmehaveatry.TheterribleearthquakestruckthecityofTangshanwhilepeopleweresleeping.Morethan400000peoplewerekilledorinjuredinthequake.Afterthequake，peoplefoundnearlyeverythingwasdestroyed.ButpeopleinTangshandidn’tloseheart.Theyrebuiltthecitywiththehelpofsoldiers.T：Quitegood.Step3ReadingandComparingT：Inthefirstperiod，wealsotalkedabouttheearthquakesthathappenedinSanFrancisco.Today，wewilllearnapassagetitled“TheStoryofanEyewitness”，whichisabouttheSanFranciscoEarthquakein1906.ItwaswrittenbyJackLondon，whowasafamousAmericanwriter.T：Firstreadthepassagecarefully.Whilereading，pleasethinkaboutthefollowingquestions：（1）Howdidtheauthorfeelabouttheearthquake？（2）HowdidtheauthorfeelaboutthepeopleofSanFrancisco？（Ssreadthepassage.）T：Now，let’scheckyouranswers.S1：Theauthorfoundtheearthquakeshockingandhorrible，becausetheauthorwrote，“Neverbeforeinhistoryhasacitybeensocompletelydestroyed.”“Nothingisleftofitbutmemoriesandsomehousesfarfromthecentreofthecity.”S2：TheauthorfoundthepeopleofSanFranciscodifferentfromeverbefore，becausetheauthorwrote，“NeverinallSanFrancisco’shistorywereherpeoplesokindasonthatterriblenight.”Peoplebecamemorepatientandunderstandingtoeachother.T：Quitegood.ButIdon’tthinktheyaretheonlyanswerstothequestions.Youcankeepyourownanswersaslongasyouthinktheyarereasonableandyoucanfindproofsfromthepassage.Readthefirstparagraphinthispassage.ThengobackandreadagainthefirstparagraphofthepassageonPage26.Comparethewaysbothwritersgiveyoudetailsabouttheearthquakes.Trytofinishthe4exercisesonPage66.Youmaydiscussinpairs.（Ssreadthetwopassagesandfinishtheexercises.）（Afterseveralminutes.）T：Nowlet’scheckyouranswers.S3：IthinkthewriteroftheSanFranciscoin1906showsmorefeelingsabouttheearthquake.Forexample，hewrote，“Neverbeforeinhistoryhasacitybeensocompletelydestroyed.”“Nothingisleftofitbutmemoriesand....”T：Iagreewithyou.YoucanseethattheauthoroftheTangshanquakein1976describedmanyphenomenathathappenedbeforethequakewascoming.Therewerenowordsthatexpressedtheauthor’sfeelingsinthefirstparagraph.S4：Bothwritersgivesimilardetailsaboutthedamagecausedbythequakesandpeople’sbraverytofacetherealities.（Teachergoesoncheckingtheanswerswiththewholeclassandasksthestudentstogivetheirreasons.）T：NextIwillplaythetapeofthispassageforyoutolisten.Pleasepayspecialattentiontotheintonation.（Afterlistening.）T：NowIwillgiveyouseveralminutestoreadthethirdparagraphwithfeeling.Step4Listening4,T：Uptillnow，earthquakesarestilldifficulttopredict.Wecanhardlyavoidanearthquake.Butactuallywecandothingstoreducethelossesofanearthquake，andwehavediscussedthatinthefirstperiod.Let’slookattheformonPage66andhaveadiscussionabouttheearthquakeplanwithyourpartner.（Afterseveralminutes.）S1：ThefirstthingImustdoistopick“safeplaces”ineachroominmyhouse.S2：ThesecondthingImustdoistostayindoorsuntiltheshakinghasstoppedandstayawayfromwindows.S3：ThethirdthingImustdoistoexpectaftershocksanduseextremecautionwhenenteringbuildings.T：Whatshouldyoudoifyouareoutside？S4：IfI’moutsideinanearthquake，Ishouldstayoutsideandmoveawayfrombuildings，trees，streetlightsandpowerlines.Ishouldstaythereuntiltheshakingstops.T：Whatshouldyoudoifyouareinthelivingroom？S5：Ishouldstayawayfromwindow.CrouchdownunderasturdytableandstayindoorsuntiltheshakingstopsandI’msureit’ssafetoexit.T：Whatshouldyoudoifyouareinthehousealone？S6：Imustkeepcalm.Steptowardsthenearestsafeplaceinthehouseandstaythereuntiltheshakingstops.T：Nextwearegoingtolistentothetapeandwritedownthethree“things”thatarementioned.（Teachercheckstheanswerswiththeclass.）T：Thenlet’slistenagain.Thistimeyoushouldwritedownmoredetailsabouteachofthe“things”.（Afterlistening，Teachercheckstheanswerswiththeclass.Playthetapeagainifnecessary.）Step5SpeakingT：Youknoweveryfamilyshouldhaveanearthquakebag，inwhichthereareenoughthingsthatyoucanuseincaseofanearthquake.Herewehavealistofpossibleitemsforthepersonalearthquakebag.Chooseonlyeightthings，whichyouthinkarethemostessential，fromthelist.Theymustlastyoufivedays.Discusswithyourpartner.（Afterseveralminutes.）T：Nowjoinanotherpairanddiscussyourchoices.Putallthethingsyouagreeonintoafinallist.Discusstheotheritemsexplainingyourreasonsandtryingtoagreewhichonesarethemostsuitable.（Afterseveralminutes.）T：Eachgroupshouldchooseonerepresentative.Nowbepreparedtopresentyourlisttotheclassandgiveyourreasonsforeachchoice.●板书设计Unit4EarthquakeTheSixthPeriodQuestions：（1）Howdidtheauthorfeelabouttheearthquake？（2）HowdidtheauthorfeelaboutthepeopleofSanFrancisco？MyEarthquakePlan1stthingImustdo....2ndthingImustdo....4,3rdthingImustdo....Ifyouareoutside，you....Ifyouareinthelivingroom，you....Ifyouareinthehousealone，you....●活动与探究Poster-makingPrepareapostertobeputuparoundschoolsorhospitalstoexplaintopeoplewhattheyshouldcollectinapersonalearthquakebagandwhy.Givealistoftheitemschosenandgivereasonsforthechoice.Thestudentsmustalsoexplainwhysomeotherthingsshouldnotbechosen.Thestudents’postersshouldbedividedintothreeparts.Part1：Whattheposterisaboutandwhy.Part2：Theitemsandwhytheyarechosen.Part3：Whatshouldbeavoidedandwhy.●备课资料QuestionsandAnswersaboutEarthquakes1.Whatisthebiggestearthquakeeverrecorded？Thelargestearthquakerecordedintheworldinthelast200yearswasthe1960magnitude9.5earthquakeinChile.Itcaused5700deathsandcreatedalargetsunami.Itisthelargestearthquaketoberecordedbymoderninstrumentsandrupturedover700kmoffaultlinewithslipofabout20m.Itwasthefirstrealconfirmationthatthewholeearthringslikeabellafterabigearthquake.2.Whatareforeshocks？Foreshocksareearthquakesthatoccuruptodaysorweekspriortoalargerearthquake.Scientistsarecurrentlyunabletotellthedifferencebetweenforeshocksandnormalbackgroundseismicityuntilthelargeearthquakehashappened.However，thefactthatmanylargeearthquakesdohaveforeshocks，indicatesthatsomethingunusualishappeningbeforethelargeeventsandgivesushopethatonedaywewillbeabletodetectwhatthisunusualactivityis.3.Howlongdoesanearthquakelast？Peoplewhohavejustfeltanearthquakeoftenaskhowlongitlasted.Whattheyreallywanttoknowishowlongtheyfelttheshaking.Thisdependsonthesizeoftheearthquakeandtheirdistancefromit，becauseearthquakewavesspreadoutastheytravel，butalsobecomeweaker.Amagnitude6earthquakeseveralhundredkilometresawaycanbeoftenbefeltfor30-40seconds.Theactualdurationofslipontheearthquakefaultisusuallyquitebrief—justafewsecondsforamagnitude6forexample.Thisisbecausethefaultrupturespreadsveryquickly（atabouttheSwavespeed），sothewholeprocessoffaultingisoververyquickly.Duringtheverylargestearthquakes，faultrupturecancontinueforupto5minutesastherupturespreadsoveralengthofsay1000km.Fortheseearthquakesveryhighlevelsofaftershocksmeanthatthegroundcanbefeltshakingcontinuouslyforsomehours.4
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