英语：module5 reading课件(外研版必修1)

Module5AlessoninalabIntroductionChoosethecorrectanswerstothequizinPart1.Thenlistenandcheckyouranswers.Answers:1.Waterexistsasasolid,aliquidandagas.2.Whenyouheatametal,itexpands.3.Steelisamixtureofironandothersubstances.4.Two-thirdsoftheearth’ssurfaceiswater.5.Thedistanceofthesunfromtheearthis150,500,500kilometres.6.Theearthis4.6billionyearsold.7.Theearthisforty-ninetimeslargerthanthemoon.Putthewordsinpairsorgroups.contractairearthgasliquidoxygenmoonsolidmoonsolidexpandsun1234air–gas-oxygencontract-expandearth–sun-moongas–liquid-solidPutwordsintherightplace.electricityironmetalsteelairglassnaturalman-madebothelectricityironairsomemetalssteelglasssomemetalselectricitysomemetals(alloyforexample)Lookatthepicturescollectedbyourclassmates.Doyouknowthenameoftheseequipment？testtubetongsbalancecruciblebeaker&glassrodBunsenburnerSinceyouareinterestedindoingscientificexperiments,nowlet’sgettoknowsomevocabularyandknowledgerelatedtoscienceandexperiment.Potassium（钾）Sodium(钠)Calcium(钙)Magnesium(镁)Aluminium（铝）Zinc（锌）Iron（铁）Copper（铜）Readthepassageasquicklyasyoucanandchoosethebesttitleforit.TheDifferentUsesofMetalsTheReactionofMetalsTheReactionofMetalswithOxygenReadingPassageAReadthepassageagainandanswerthefollowingquestions:1.Whichofthemetalsinthetablereactsthemostwithoxygenandwater?potassium,calciumandsodium2.Whathappenswhenyouheatcalciuminoxygen?Itbeginstoformanoxide.3.Whichmetalsreactwithsteam?Magnesium,aluminiumandzinc4.Doesironhaveasloworfastreactionwithsteam?Ithasaslowreaction.5.Doescopperreactwithwater?No,itdoesn’t.conclusion,method,result,aim,apparatusAnExperimentReport1.__________:2.__________:3.__________:(1)(2)(3)4.__________:5.__________:AimApparatusMethodResultConclusionPutthesewordsinthecorrectorder.1.Readthepassagecarefullyandfillthechartonpage45.2.Readthepassageagainandcompletethesentencesonpage46.PassageBcottonwoolnailswaterwaterwaterThenailshaven’trustedThenailsdonotrust.Thenailsrust.PassageB:ASimpleScientificExperiment1.Inthefirstpartoftheexperiment,the__isdry,notwet.2.Itshowsthatiron___________whentheairisdry.3.Inthesecondpartoftheexperiment,youmust___thewatertomakesurethereisno__init.airdoesnotrustboilair4.Youadd_______tothewaterbecausethiskeeps__outofit.5.Itshowsthat___doesnotrustinwaterthathasno__init.someoilairnailairCompletethepassagewithproperwordsaccordingtopassageAandBItishardtothinkofaworldwithoutmetals.Differentmetalshavedifferentuses,forexample,ironcanbeusedin________equipment.Butaboveallweshouldknowwhetheritwill____underdifferentconditions.electricalreactOtherwise,itwillkeeptheequipmentfromworkingwell.Asweallknow,ifironisheatedinoxygen,itwillreactslowlybutwillnotforman_____.Ontheotherhand,ifitisputtogetherwithwateror_____,therewilla______reaction.Nextlet’sdoan__________tosupporttheabove.First,getatesttubefilldewithwaterandputitoverthe_____________to___forthreeminutes.oxidesteampartialexperimentbunsenburnerboilThenputthreeorfourcleannailsinthewaterwithsomeoiladdedtoitandleavethetubeforoneweek.Whathappens?Theirondoesnot____inair-freewater.Anotherexperiment,ifyouputthenailsinthetubewiththeairinitforoneweek,thenwhathappens?Ironrustsin_______water.rustordinaryReadaboutanincidentduringachemistrylessonandchoosethebestsummary.ReadingonP931.Astudentdidn’tfollowtheinstructionscarefully.Hetookthewrongliquidfromthecupboardandnearlypoisonedtheclass.2.Thechemistryteacherwasdemonstratinganexperimentwhensheheatedapoisonousliquid.Therewassomuchsmokethatthestudentshadtoleavetheroom.3.Astudentwasdoingachemistryexperimentwhenheaccidentallyheatedthewrongliquidandcausedanincidentinthelaboratory.Readthepassageagainandanswerthequestions:1.Whatsubstancesweretheyusing?Bakingsodaandhydrochloricacid2.Whatsubstanceswerethestudentsmaking?Salt3.Howcantheymakethereactionquicker?Bymakingthemixturehotter.4.WhatmistakesdidPaulmake?Heusedthewrongliquid.5.Whydidhemakethemistake?Becausetherewasnolabelonthebottle.6.WhathappenedwhenPaulheatedtheliquid?Itformedathickcloudofwhitegas.7.Whydidtheteachersendthestudentsoutoftheroom?Becausetheliquidwasacrylamideandthegaswaspoisonous.8.Whatlessondidtheincidentteachthestudentsandtheteacher?Nevertoleaveabottlewithoutalabelinthechemistrylad.Ifyouwanttodoscientificexperimentswell,whatqualities(品质)shouldyouhaveinyouropinion?Possibleanswers:Weshouldbecareful/serious/diligent/patient/thoughtful/etc.Discussion1.Learnthenewwordsbyheart.2.ReadthepassageAandBandtrytoretellit.Assignmentsforyou(languagepoints)镜头再现1.Theearthisforty-ninetimeslargerthanthemoon.2.ThemorebooksIread,themoreinformationIlearn.上面两个句子中重点强调的是比较级。这一语法现象我们在初中已学过,现在我们对这一语法进行总结。三种比较句型的转换：1)A+be+fourtimes+比较级＋than+B2)A+be+fourtimes+as+adj/adv+as+B3)A+be+fourtimes+the+NofBThewellisfourtimesdeeperthanthatone.=Thewellisfourtimesasdeepasthatone.=Thewellisfourtimesthedepthofthatone.哪一些词可以来修饰比较级？1)much/rather/abit/alittle/alot/agreatdeal/any/…2)倍数、分数、百分数、小数3)一些名词TheweatherinwinterinBeijingismuchcolderthanthatinShanghai.Thisbookis50%percentmoreexpensivethanthatone.JohnisaheadtallerthanI.一个固定句型:the+比较级,the+比较级1.Themoreoftenyoustaywithhim,theb