人教版高一英语必修1Unit4全套课件ppt.ppt

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1、Howmanynaturaldisastersdoyouknow?typhoon typhoonLead-inLead-inPacifictyphoonreferstotropicalcyclonesforminginthenorthwesternPacificOcean.OthertropicalcyclonesincludehurricanesthatformovertheAtlanticOcean,CaribbeanSea,theGulfofMexico,orthePacificOceannorthoftheequatorandeastoftheDateLine.Thebasinisde

2、marcatedwithinthePacificOceanfromAsia,northoftheequator,andwestoftheinternationaldateline.StormsfromtheEasternandCentralPacificcrossingthedatelinearere-designatedastyphoons.Typhoonpathsfollowthreegeneraldirections:-Straight:AgeneralwestwardpathaffectsthePhilippines,southernChina,andVietnam.-Recurvin

3、g:StormsrecurvingaffecteasternChina,Korea,andJapan.-Northward:Frompointoforigin,thestormfollowsanortherlydirection,onlyaffectingsmallislands.IntroductionofTyphoonHowmanynaturaldisastersdoyouknow?thunderstormthunderstormHowmanynaturaldisastersdoyouknow?floodfloodfloodfloodFloodhappenswhenanareaofland

4、,usuallylow-lying,iscoveredwithwater.Theworstfloodsusuallyoccurwhenariveroverflowsitsbanks.Floodshappenwhensoilandvegetationcannotabsorballthewater;waterthenrunsoffthelandinquantitiesthatcannotbecarriedinstreamchannelsorkeptinnaturalpondsorman-madereservoirs.Periodicfloodsoccurnaturallyonmanyrivers,

5、forminganareaknownasthefloodplain.Theseriverfloodsusuallyresultfromheavyrain,sometimescombinedwithmeltingsnow,whichcausestheriverstooverflowtheirbanks.Coastalareasareoccasionallyfloodedbyhightidescausedbyseverewindsonoceansurfaces,orbytidalwavescausedbyunderseaearthquakes.Thereareoftenmanycausesfora

6、flood.IntroductionofFloodHowmanynaturaldisastersdoyouknow?volcanovolcanoHowmanynaturaldisastersdoyouknow?firefireHowmanynaturaldisastersdoyouknow?tsunamitsunamiAtsunamiisaseriesofwavesgeneratedwhenwaterinalakeortheseaisrapidlydisplacedonamassivescale.Earthquakes,landslides,volcaniceruptionsandlargem

7、eteoriteimpactsallhavethepotentialtogenerateatsunami.Theeffectsofatsunamicanrangefromunnoticeabletodevastating.ThetermtsunamicomesfromtheJapaneselanguagemeaningharborandwave.AlthoughinJapanesetsunamiisusedforboththesingularandplural,inEnglishtsunamisiswell-establishedastheplural.Thetermwascreatedbyf

8、ishermenwhoreturnedtoporttofindtheareasurroundingtheharbordevastated,althoughtheyhadnotbeenawareofanywaveintheopenwater.Atsunamiisnotasub-surfaceeventinthedeepocean;itsimplyhasamuchsmalleramplitude(waveheights)offshore,andaverylongwavelength(oftenhundredsofkilometerslong),whichiswhytheygenerallypass

9、unnoticedatsea,formingonlyapassinghumpintheocean.IntroductionofTsunamiHowmanynaturaldisastersdoyouknow?sand stormssand stormsBasicknowledgeaboutearthquakeBasicknowledgeaboutearthquakeHowtoprotectoneselfandhelpothersinHowtoprotectoneselfandhelpothersindisastersdisastersKnowledgeGoalsTopicWordsandExpr

10、essionsLearning GoalsLearning Goalsimagineimagine shakeshake riserise earthquakeearthquake wellwell pipepipe nationnation canalcanal streamstream dirtdirt ruinruin sufferingsuffering extremeextreme injureinjure destroydestroy brickbrick damdam frightenfrighten freightingfreighting congratulationcong

11、ratulation judgejudge expressexpress cyclistcyclist UselessshockrescueUselessshockrescueWords:1.havetimetodo1.havetimetodo有时间做某事有时间做某事有时间做某事有时间做某事2.happentodo2.happentodo碰巧做某事碰巧做某事碰巧做某事碰巧做某事3.shakehandswithsb3.shakehandswithsb握手握手握手握手4.burstintotears/laughter4.burstintotears/laughter突然哭突然哭突然哭突然哭/笑起来

12、笑起来笑起来笑起来5.inruins5.inruins成为废墟成为废墟成为废墟成为废墟6.cutacross6.cutacross穿过、横穿穿过、横穿穿过、横穿穿过、横穿7.blowaway7.blowaway吹走、刮走吹走、刮走吹走、刮走吹走、刮走8.falldown8.falldown倒塌倒塌倒塌倒塌9.rescueworkers9.rescueworkers救援人员救援人员救援人员救援人员 10.bepleasedtodo10.bepleasedtodo乐意做某事乐意做某事乐意做某事乐意做某事11.judging.from11.judging.from根据根据根据根据来判断来判断来判断来

13、判断Expressions:TalkingaboutpastexperiencesTalkingaboutpastexperiencesExpressingthanksExpressingthanksFunctionalItems GrammarLearntouseattributiveclause:Learntouseattributiveclause:(以以以以that,which,whothat,which,who和和和和whosewhose为引导）为引导）为引导）为引导）EnabletowriteasmallarticletodescribeanEnabletowriteasmalla

14、rticletodescribeanevent.event.DeveloptheabilitytogetthemessagefromDeveloptheabilitytogetthemessagefromdifferentways,justlikethevideo.Thentrydifferentways,justlikethevideo.Thentryyourbesttousethemessageinyourarticle.yourbesttousethemessageinyourarticle.HaveascientificattitudetowardsHaveascientificatt

15、itudetowardsdisaster,andgraspmoreknowledgeaboutdisaster,andgraspmoreknowledgeabouthowtodealwithit.howtodealwithit.AbilityGoalsEmotionGoals1.Thedisasterandhowtodealwithit.Thedisasterandhowtodealwithit.2.TheusageofattributiveclauseTheusageofattributiveclause3.TrytoimprovetheabilityoftalkingaboutTrytoi

16、mprovetheabilityoftalkingaboutpastexperiencesbydescribingthebigeventpastexperiencesbydescribingthebigeventduringadisaster.duringadisaster.ImportantandDifficultPointsImportantPoints1.TrytoknowthewaystorescueinaTrytoknowthewaystorescueinadisaster.disaster.2.Trytodeveloptheabilityofspeaking.2.Trytodeve

17、loptheabilityofspeaking.DifficultPointsCompare Compare the the two two pictures,pictures,then then have have a a discussion discussion about about the the earthquakes earthquakes harm harm to to the people with your partner.the people with your partner.Todays Tang Shan Todays Tang ShanAfter the eart

18、hquakeAfter the earthquake Warming Up Warming UpToday s Tang ShanToday s Tang ShanAfter the earthquakeAfter the earthquakeToday s Tang ShanToday s Tang ShanAfter the earthquakeAfter the earthquakeToday s Tang ShanToday s Tang ShanAfter the earthquakeAfter the earthquakeCompare Compare the the two tw

19、o pictures,pictures,then then have have a a discussion discussion about about the the earthquakes earthquakes harm harm to to the people with your partner.the people with your partner.CaliforniaCalifornia经营者提供商品或者服务有欺诈行为的，应当按照消费者的要求增加赔偿其受到的损失，增加赔偿的金额为消费者购买商品的价款或接受服务的费用Major earthquake of the worldEa

20、rthquakeshaveoccurredonearthssurfacesincetimesimmemorial.Thousandsandthousandsofearthquakeshappeneveryyearhowever,mostofwhichgounnoticedastheyareeithertoweakontheRichterscaleorhappeninremotestoftheareas.Earthquakescausedisastersandcausebothlossoflivesandproperty.May22,1960witnessedtheworldsstrongest

21、earthquakeinValdicvia,Chile.Theearthquakewithamagnitudeof9.5onRichterscalecaused20,000fatalities.经营者提供商品或者服务有欺诈行为的，应当按照消费者的要求增加赔偿其受到的损失，增加赔偿的金额为消费者购买商品的价款或接受服务的费用ThesecondstrongestearthquakeoccurredonDecember26,2004withamagnitudeof9.3onRichterscale.OceanfloorofwestSumatraandIndonesiaweretheepicenter

22、ofthisearthquakethatcausedover300,000causalities.ThisearthquakecausedthedisastroustsunamiintheIndianOcean.OnMarch27,1964PrinceWilliamSound,Alaskafacedtheworldsthirdstrongestearthquake.Theearthquakemeasured9.2onRichterscalecausedagreatdealofdamageinAnchorage.Kamchatka,1952having9.0magnitudeandOfftheC

23、oastofEcuador,1906having8.8magnitude,arethefourthandthefifthstrongestearthquakesontheworldtilldate.经营者提供商品或者服务有欺诈行为的，应当按照消费者的要求增加赔偿其受到的损失，增加赔偿的金额为消费者购买商品的价款或接受服务的费用Talk about the latest earthquake in last year.As we know,Wenchuan earthquake as huge as Tangshan earthquake in 1976.What did you do when

24、 it happened?When you know so many people had died in the earthquake how did you feel?What should we change after the earthquake?Discuss with your classmates.1.Image your home begins to shake and 1.Image your home begins to shake and you must leave it immediately.You have you must leave it immediate

25、ly.You have time to take only one thing.What will you time to take only one thing.What will you take?Why?take?Why?2.What do you think will happen before 2.What do you think will happen before an earthquake?an earthquake?Pre-reading Pre-reading 1.Fast read the passage,then try to answer the following

26、 questions:(1)When did the earthquake begin?(1)When did the earthquake begin?(2)How many people were killed or injured(2)How many people were killed or injured in the quake?in the quake?(3)Who helped to rescue the people?(3)Who helped to rescue the people?2.Listen to the text:ReadingReading(1)Thechi

27、ckensdidnteatbecausetheywerefull.(2)Onethirdofthepeoplediedorwereinjuredduringtheearthquake.(3)Suchagreatnumberofpeoplediedbecausethequakehappenedwhiletheywereworking.(4)Allthehospitalshadbeendestroyed.(5)Waterwasneededbecausedamsandwellswereuseless.FFFFFFTTTT3.Read for the first time,then do the fo

28、llowing detail questions.Readforthethirdtime,thentrytodividethewholepassageforseveralparts,andthemainideaofthem.4.Main idea of each paragraph and timeline(1)BeforetheearthquakeParagraph（1）Strangethingsbegantohappen,butnoonetookanynoticeofthem.(2)DuringtheearthquakeParagraph(s)（2&3）Itdestroyedthecity

29、ofTangshanandshockedthepeople.(3)AftertheearthquakeParagraph（4）Armycametohelpthesurvivors,bringinghopeforanewlife.FromthethreedaysFromthethreedaysbeforetheearthquakebeforetheearthquakethestrangeevent.thestrangeevent.ThewaterinThevillagewells_and_;ThewaterinThevillagewells_and_;thewellwallshaddeep_;t

30、hewellwallshaddeep_;A_gascameoutofthem.A_gascameoutofthem.roserosefellfellcrackscrackssmellysmellyMiceMice_thefieldslookingforplaces_thefieldslookingforplacestohide.tohide.ranoutofranoutofFishFish_theirbowlsandponds._theirbowlsandponds.jumpedoutofjumpedoutofAtabout3:00amonJuly28,19761.1.Bright light

31、sBright lights _in the sky _in the skyappearedappeared2.2.The sound of planesThe sound of planes could be could be _although there were no planes _although there were no planes heardheard3.3.Some waterSome water _burst._burst.pipespipesDuringtheearthquake,Duringtheearthquake,at3:42amonJulyat3:42amon

32、July28,197628,19761.1.EverythingEverythingbeganto_.beganto_.shakeshake2.2.HugecracksHugecracks_intheroads._intheroads.appearedappeared3.3.StemStem_fromholesintheground._fromholesintheground.burstburst4.4.RockRock_riversofdirt_riversofdirtturnedintoturnedinto5.5.75%75%buildingsandbuildingsand 9090%of

33、homes%ofhomeswere_.were_.gonegone6.Morethan400,0006.Morethan400,000peoplepeople_ _or_._or_.killedkilledinjuredinjuredAftertheearthquake(July28,1976)1.1.A second quackA second quack almost as _as almost as _as the first one.the first one.strongstrong2.More _to 2.More _to buildings and rescuersbuildin

34、gs and rescuersdamagedamageSoonafterthequack.1.The The army_army_.2.2.Shelter _Shelter _survivors.survivors.3.3.Water suppliesWater supplies _in._in.arrivedarrivedbuiltforbuiltforbroughtbroughtEarthquakeSurvivalTips Would Would Would Would you you you you know know know know what what what what to t

35、o to to do do do do during during during during a a a a really really really really big big big big earthquake?earthquake?earthquake?earthquake?Experts Experts Experts Experts have have have have looked looked looked looked into into into into matter matter matter matter carefully.carefully.carefull

36、y.carefully.It It It It may may may may be be be be worth worth worth worth you you you you while while while while to to to to look over the following tips they have for us.look over the following tips they have for us.look over the following tips they have for us.look over the following tips they

37、have for us.If If If If the the the the ground ground ground ground begins begins begins begins shaking shaking shaking shaking while while while while you you you you are are are are driving,driving,driving,driving,pull pull pull pull over over over over and and and and stay stay stay stay in in in

38、 in your your your your car.car.car.car.If If If If you you you you are are are are in in in in a a a a building,building,building,building,try try try try to to to to get get get get near near near near a a a a strong strong strong strong wall.wall.wall.wall.The The The The corner corner corner cor

39、ner of of of of the the the the room room room room or or or or the the the the space space space space under under under under a a a a bigbigbigbigBackgroundBackgrounddoorway doorway doorway doorway is is is is the the the the safest.safest.safest.safest.As As As As soon soon soon soon as as as as

40、the the the the quake quake quake quake is is is is over,over,over,over,check check check check the the the the gas gas gas gas pipe pipe pipe pipe in in in in the the the the building.building.building.building.Gas Gas Gas Gas fires often result from earthquakes.fires often result from earthquakes.

41、fires often result from earthquakes.fires often result from earthquakes.These These These These tips tips tips tips may may may may prove prove prove prove to to to to be be be be lifesavers.lifesavers.lifesavers.lifesavers.We We We We should,should,should,should,therefore,therefore,therefore,theref

42、ore,keep keep keep keep them them them them in in in in mind.mind.mind.mind.Remember Remember Remember Remember to to to to always always always always hope hope hope hope for for for for the the the the best best best best but but but but prepare for the worst.prepare for the worst.prepare for the

43、worst.prepare for the worst.BackgroundBackground1.1.If it has an earthquake when having classes,If it has an earthquake when having classes,If it has an earthquake when having classes,If it has an earthquake when having classes,the students should listen to the teachers the students should listen to

44、 the teachers the students should listen to the teachers the students should listen to the teachers instruction,protect their heads and hide under instruction,protect their heads and hide under instruction,protect their heads and hide under instruction,protect their heads and hide under the desks.th

45、e desks.the desks.the desks.2.2.If it has an earthquake when the students are in If it has an earthquake when the students are in If it has an earthquake when the students are in If it has an earthquake when the students are in the sports ground,they can crouch on the spot the sports ground,they can

46、 crouch on the spot the sports ground,they can crouch on the spot the sports ground,they can crouch on the spot and protect their heads with hands.Be sure to and protect their heads with hands.Be sure to and protect their heads with hands.Be sure to and protect their heads with hands.Be sure to keep

47、 away with high building and dangerous keep away with high building and dangerous keep away with high building and dangerous keep away with high building and dangerous objects.objects.objects.objects.3.3.Dont go back to the classroom.Dont go back to the classroom.Dont go back to the classroom.Dont g

48、o back to the classroom.4.4.Retreat in order after the earthquake.Retreat in order after the earthquake.Retreat in order after the earthquake.Retreat in order after the earthquake.BackgroundBackgroundEscape in Public PlacesEscape in Public PlacesEscape in Public PlacesEscape in Public PlacesListen t

49、o the command of the site workers.Listen to the command of the site workers.Listen to the command of the site workers.Listen to the command of the site workers.Dont be scared and dont rush towards the Dont be scared and dont rush towards the Dont be scared and dont rush towards the Dont be scared an

50、d dont rush towards the exits.Try to avoid crowds.Avoid to be exits.Try to avoid crowds.Avoid to be exits.Try to avoid crowds.Avoid to be exits.Try to avoid crowds.Avoid to be squeezed to the wall or barriers.squeezed to the wall or barriers.squeezed to the wall or barriers.squeezed to the wall or b