高中英语 Module 5 A Lesson in a Lab Section Ⅰ Introduction,Reading & Vocabulary课件 外研必修1.ppt
Module 5A Lesson in a Lab2021/8/11 星期三1词海拾贝 难句剖析理解诱思 Lifeisfullofsurprisingchanges.Herearetwochangesforyoutoexplore.ChemicalChangeandPhysicalChangeTherearetwokindsofchangesinourdailylifethechemicalchangeandthephysicalchange.Inachemicalchange,thereisalwaysanewsubstanceformed.Breakingupwaterintohydrogen1andoxygenisachemicalchange.Ineachofthechemicalchangeatleastonenewsubstanceisformed.Achangeisnotachemicalchangeifitdoesntformanewsubstance.2021/8/11 星期三2词海拾贝 难句剖析理解诱思 Physicalchangesareverycommon,too.Therearemanyexamples.Youcanmakeaphysicalchangebytearing2apieceofpaperintotwo,orbycuttingapieceofironwithalathe3.Herethepaperisstillpaper,andtheironisstilliron.Anotherwayofmakingaphysicalchangeisdissolvingsomethinginwater.Whenyoudissolvesaltinwater,thesaltdisappears.Youmaythinkthatanewsubstancehasbeenformed.Butinfactthereisnonewsubstance.Thesaltisstillsalt.Youcanstilltasteit.Sothedissolvingofsomethingisusuallyaphysicalchange.2021/8/11 星期三3词海拾贝 难句剖析理解诱思 Whenwaterfreezes,thechangeisalsoaphysicalone.Thewaterchangesfromliquidtosolid.Butitisstillthesamesubstance.Thatiswhythefreezingofanythingisaphysicalchange.Andpeopleoftentellthedifferencesbetweenachemicalchangeandaphysicalchangethroughsomeexperiments.Inthismodule,letsexplore4themagicalscienceworldbydoingexperimentsbyourselves.2021/8/11 星期三4词海拾贝 难句剖析理解诱思 译文:化学变化和物理变化日常生活中存在两种变化,它们是化学变化和物理变化。2021/8/11 星期三5词海拾贝 难句剖析理解诱思 在化学变化中总是有新的物质生成。把水分解成氢气和氧气是一种化学变化。在每一次的化学变化中至少有一种新的物质生成。没有新的物质生成的变化不是化学变化。物理变化也很常见。有很多例子(可以说明这个问题)。你可以通过把一张纸撕成两部分或用机床切割铁块来产生物理变化。在这个变化中纸仍然是纸,铁块仍然是铁块。另一种产生物理变化的方法是在水中溶解某种物质。当你把盐溶解在水中时,盐不见了。你或许会认为有一种新的物质生成了。但事实上并没有新物质生成。盐还是盐。你仍然能够尝到它。所以溶解通常属于物理变化。2021/8/11 星期三6词海拾贝 难句剖析理解诱思 当水结冰时,这种变化也是物理变化。只不过水从液态变成了固态,但它仍然是同一种物质。那就是为什么所有的凝固都是物理变化。人们常常通过实验来区分化学变化和物理变化。在本模块中,让我们通过自己做实验来探索神奇的科学世界吧。2021/8/11 星期三7词海拾贝 难句剖析理解诱思 1.substancesbstsn.物质,东西2.hydrogenhaIdrdnn.氢气3.latheleIn.车床4.exploreIksplv.探测,探索2021/8/11 星期三8词海拾贝 难句剖析理解诱思 Youcanmakeaphysicalchangebytearingapieceofpaperintotwo,orbycuttingapieceofironwithalather.译文:你可以通过把一张纸撕成两部分或用机床切割铁块来产生物理变化。剖析:本句是简单句,其中bydoing是固定搭配,“通过的方式”。2021/8/11 星期三9词海拾贝 难句剖析理解诱思 1.Whichofthestatementsistrue?A.Inaphysicalchange,thereisoftenanewthingformed.B.Onlyonenewsubstanceisformedinachemicalchange.C.Thepassageisdevelopedbygivingexamples.D.Onlybydoingexperimentscanwetellaphysicalchangefromachemicalchange.2.Canyougiveanexampletoshowthedifferencesbetweenaphysicalchangeandachemicalchange?答案:C答案:Theanswervaries.2021/8/11 星期三10Section Introduction,Reading and Vocabulary2021/8/11 星期三11一二三四Pre-reading一、写作词汇语境考查,预习Introduction,ReadingandVocabulary部分的词汇,完成下列对话或语段。1.Whatsyour(目标)oflife?Tochangetheworldbyinventingthings.2.Howdidthey(反应)tothenewrule?Theywerestronglyagainstit.3.What(结论)canwereachfromtheexperiment?Itdoesntmeltwithoutwater.aimreactconclusion2021/8/11 星期三12一二三四4.Youlooktired.Youdbetter(均衡)yourtimebetweenworkandrelaxation.5.Whatdoesyourheadteacherlike?Hesan(普通)manwithapairofglasses.6.Weshould(形成)agoodhabitofstudying.balanceordinaryform2021/8/11 星期三13一二三四二、阅读词汇预习Introduction,ReadingandVocabulary部分的词汇,阅读下列句子,写出画线部分的汉语意思。1.Whatdoeswaterchangeintoifheated?Itchangesfromliquidtosteam.,2.Whatissoilmadeupof?Variouschemicalsubstances.3.Withoutelectricity,whatwouldourlifebelike?Itwouldbeharder.液体水汽物质电2021/8/11 星期三14一二三四4.Objectsexpandwhenheated,butwhatwillhappenifcooled?Theywillcontract.,5.Todotheexperiment,first,boilsomewater.Thendissolveatabletinit.Afterawhileyoullseesomethingfloatingonthewater.,膨胀收缩煮溶解漂浮2021/8/11 星期三15一二三四While-reading三、阅读Reading and Vocabulary中的Passage A,选出正确答案1.reactsthemostwithoxygenandwater.A.PotassiumB.CalciumC.AluminiumD.Iron2.Whichofthemetalsreactstheleastwithoxygenandwater?A.Sodium.B.Magnesium.C.Potassium.D.Copper.答案:A答案:D2021/8/11 星期三16一二三四3.Whenheatedinoxygen,magnesium.A.burnstoformhydrogenB.burnstoformanoxideC.reactsslowly D.doesntreactatall4.Whichmetaldoesntreactwithwater?A.Iron.B.Aluminium.C.Copper.D.Sodium.5.Whichmetalreactsslowlywhenitisheatedinoxygen?A.Iron.B.Copper.C.Zinc.D.Calcium.答案:B答案:C答案:A2021/8/11 星期三17一二三四Post-reading四、下面一段文章是课文原文的浓缩,仔细阅读并根据课文内容将其补充完整FromPassageAweknowthe1.ofmetalswithsome2.suchaswaterandoxygencanbe3.Itcanbeseenthemetalsreactmost4.andthemetalsreactleast5.Whenyouheatcalciuminoxygen,youllfinditburnstoformanoxide.Anditcaneasilybeseencopperdoesnt6.water.reactionsubstancesputinorderatthetopatthebottomreactwith2021/8/11 星期三18一二三四InthefirstpartoftheexperimentinPassageB,theairisdry,notwet.Itshowsthatirondoesnt7.whentheairisdry.Inthesecondpartoftheexperiment,youmust8.thewatertomakesurethereisnoairinit.You9.someoiltothewaterbecausethis10.airoutofit.Itshowsthatirondoesntrustinwaterthathasnoairinit.rustboiladdkeeps2021/8/11 星期三1912345671.When you heat a metal,it expands.(P41)当你加热金属时,它会膨胀。考点:expand vi.膨胀Atyreexpandswhenyoupumpairintoit.轮胎一打气就鼓起来。考点延伸1)阅读下列句子,体会黑体词的意义Ourforeigntradehasexpandedgreatlyinrecentyears.我们的对外贸易近年来已有极大的发展。意义:发展Thepetalsoftheflowersexpandedinthesunshine.花瓣在阳光下张开了。意义:伸展,张开2021/8/11 星期三2012345672)阅读下列句子,体会黑体词的意义Thewaistexpandstofitallsizes.腰围可拉松适合任何尺码。意义:变大,扩大Canyouextendyourvisitforafewdayslonger?你能多停留几天吗?意义:伸长,延长Thesweaterhasstretched.这件毛衣给撑得变形了。意义:拉长;撑大;撑松Thediseaseisspreadingfast.这种病正在迅速蔓延。意义:(使)蔓延,扩散,散开2021/8/11 星期三211234567辨析:(1)expand展开、扩大,不仅指尺寸的增加,还可指范围和体积的扩大。(2)extend伸出,延伸,指空间范围的扩大,以及长度、宽度的朝外延伸,也可指时间的延长。(3)stretch伸展,拉长,一般指由曲变直,由短变长的伸展,不是加长。(4)spread伸开,传播,一般指向四面八方扩大传播的范围,如传播(疾病)、散布(信息)等。2021/8/11 星期三221234567Asthefluisspreadingthroughthewholeschool,theheadmasterhasdecidedtoextendtheholidaybyanothertwodays.Moststudentscanlieinbed,stretchingthemselvestohavearest.因为流感正在整个校区蔓延开来,校长已决定假期再延长两天。多数学生可以躺在床上,舒展身体休息一下了。2021/8/11 星期三231234567答案:1)expand2)expanded2021/8/11 星期三241234567答案:3)expand4)extends5)spread(s)6)stretched2021/8/11 星期三2512345672.It is hard to think of a world without metals.(P44)很难想象一个没有金属的世界。剖析:本句句型:Its+形容词+动词不定式短语,句型中it为形式主语,动词不定式短语为真正的主语。考点:think of想象,设想Ineverybeginningthinkoftheend.凡事开头时就要想想后果。2021/8/11 星期三261234567考点延伸1)阅读下列句子,体会黑体词组的意义Therearesomanythingstothinkofbeforewedecide.我们要考虑到许多方面然后才能做决定。意义:考虑Sorry,Icantthinkofyourname.对不起,我想不起你的名字了。意义:想起,记起Theyallthoughtofherasanicegirl.他们都认为她是一个好女孩。意义:认为,有的看法Cananybodythinkofawaytoraisemoneytohelpthepoor?有人能想出筹款的办法来帮助那些贫穷的人吗?意义:想出2021/8/11 星期三2712345672)阅读下列句子,指出黑体词的搭配及意义Wethinkhighlyofournewteacher,assheispatient.我们高度评价我们的新老师,因为她很有耐心。搭配:thinkhighlyof意义:高度评价Shesthinkingaboutchangingherjob.她正考虑要换个工作。搭配:thinkabout意义:考虑PleasethinkoverwhatIvesaid.请仔细考虑我说的话。搭配:thinkover意义:仔细考虑2021/8/11 星期三281234567Haveyouthoughtofawaytodealwiththeproblem?Ihavebeenthinkingaboutit.Pleasethinkitoverandfindaway.你想出解决这个问题的办法了吗?我一直在考虑这个问题。请你仔细考虑一下,找找办法。thinkof考虑,想出thinkhighlyof高度评价thinkabout考虑thinkover仔细考虑2021/8/11 星期三2912345672021/8/11 星期三3012345672021/8/11 星期三3112345673.Different metals have different uses,for example,steel is used in cars,and iron is used in electrical equipment.(P44)不同的金属有着不同的用途。譬如,钢用于车辆,铁用于电子设备。考点:equipment n.设备;装备Alltheequipmentintheirfactoryisoutofdate.他们厂的设备都过时了。2021/8/11 星期三321234567考点延伸阅读下列句子,指出黑体词的词性、搭配、意义或用法Sheborrowedmoneytorentandequipasmallworkshop.她借钱来租用和装备一个小车间。词性:动词意义:装备,配备Youdbetterequipyourbicyclewithaheadlight.你最好在你的自行车上装个前灯。搭配:equipsb/sthwithsth意义:用某物来装备某人或某物2021/8/11 星期三331234567Yourtrainingwillequipyouforyourfuturejob.你的训练使得你能够胜任将来的工作。搭配:equipsbforsth意义:使某人为某事做好准备,使某人有能力做某事Heboughtanewpieceofequipment.他购买了一件新设备。用法:apieceofequipment表示一件设备,不可数名词2021/8/11 星期三341234567Heboughtmanynewpiecesofequipmenttoequiphimselfforthejourneythroughthedesert.他买了许多新设备来为穿越沙漠做准备。equipmentn.设备;装备(不可数名词)equipv.装备,配备equipsb/sthwithsth用某物来装备某人或某物equipsbforsth使某人为某事做好准备,使某人有能力做某事2021/8/11 星期三3512345672021/8/11 星期三3612345672021/8/11 星期三3712345674.When we use metals,it is important to know how they react with different substances,for example,water and oxygen.(P44)使用金属时,要了解金属和不同的物质(例如水和氧)如何发生反应,这一点很重要。考点:react vi.(化学)反应Sodiumandwaterreact(together).钠和水(在一起)能起反应。2021/8/11 星期三381234567考点延伸1)阅读下列句子,指出黑体词的搭配及意义Ironreactswithwaterandairtoproducerust.铁与水和空气起反应而生锈。搭配:reactwith意义:与起反应Howdidtheyreacttooursuggestion?他们对我们的建议反应如何?搭配:reactto意义:作出反应,回应Mostpeoplereactedagainstthepassingofthelaw.多数人反对通过这项法律。搭配:reactagainst意义:反对,反抗2021/8/11 星期三3912345672)阅读下列句子,体会黑体词的词性及意义Reactionstotheplanhavebeenmixedsofar.到目前为止,人们对该计划的反应不一。词性:名词意义:反应,回应Thechemistryteacherexplainedthereactionofironwithoxygentous.化学老师给我们解释了铁与氧气的反应。词性:名词意义:化学反应2021/8/11 星期三401234567Thiskindofmetaldoesntreactwithwaterandair,whichamazedus.Howdoyoureacttotheresult?这种金属不与空气和水反应,这让我们很惊讶。你对这个结果有何反应?reactwith与起反应reactto作出反应,回应reactagainst反对,反抗reactionn.反应,回应;化学反应2021/8/11 星期三4112345672021/8/11 星期三4212345675.Aim:To find out if iron rusts(a)in dry air;(b)in water that has no air in it(air-free water);(c)in ordinary water.(P45)目标:研究铁是否在下列状态下生锈:(a)在干燥的空气中;(b)在不含空气的水中(没有空气的水);(c)在普通的水中。剖析:if引导宾语从句,意为“是否”,可用whether代替。考点一:aim n.目标;目的Helovedexperimentingandhisaimwastobecomeascientistlikehisfather.他喜欢做实验,而且他的目标就是成为一名像他父亲一样的科学家。归纳:当aim作主语时,常用动词不定式作表语。2021/8/11 星期三431234567考点延伸1)阅读下列句子,指出黑体词的词性及意义Heaimed(hisgun)atthetarget.他(用枪)瞄准目标。词性:动词意义:瞄准2)阅读下列句子,指出黑体词的搭配及意义Heraisedhisbowandbegantotakeaimatthebird.他举起弓,开始瞄准那只鸟。搭配:takeaimat意义:瞄准2021/8/11 星期三441234567Weshouldaimatdoingsomethingusefultothesociety.我们应当旨在做一些对社会有益的事情。搭配:aimatsth/doingsth意义:目标是;旨在做某事IaimtobeapolicemanwhenIleaveschool.我打算毕业以后当名警察。搭配:aimtodosth意义:打算做某事Thesemeasuresareaimedatpreventingairpollution.这些措施旨在防止空气污染。搭配:beaimedat意义:旨在,目的在于2021/8/11 星期三451234567Ialwaysaimtobecomeasuccessfulman.Withthisaim,IcametoShanghailastyear.Iaimedatfindingabetterlife.我一直想成为一名成功人士。带着这个目标,去年,我来到了上海,旨在寻求一种更好的生活。2021/8/11 星期三461234567aimn.目标,目的v.瞄准takeaimat瞄准aimat(doing)sth目标是;旨在做某事aimtodosth打算做某事beaimedat目的在于2021/8/11 星期三471234567考点二:ordinary adj.普通的;平常的Thefilmrepresentedthelifeofordinarypeople.这部影片展现了普通人的生活。考点延伸阅读下列句子,体会黑体词的意义TheTVseriesRedSorghumisverypopularamongordinarypeopleinChina.电视剧红高粱在中国普通老百姓中深受欢迎。意义:平常的,普通的,平凡的,平淡无奇的2021/8/11 星期三481234567Pinetreesarecommonthroughouttheworld.松树在世界各处都很常见。意义:常见的,普通的注意:common还表示“公共的,共有的”。Itisusualforhimtostayuplateatnight.他对熬夜已习以为常。意义:通常的,惯常的Thedoctorsaidhistemperaturewasnormal.医生说他的体温很正常。意义:正常的,常态的2021/8/11 星期三4912345672021/8/11 星期三501234567SuchweatherinBeijingiscommontoordinarypeople.Theyhopeitcanreturntonormalafterdaysofheavyfog.这样的天气对北京普通百姓来说很常见,他们希望几天的大雾之后,天气能恢复正常。2021/8/11 星期三5112345672021/8/11 星期三5212345672021/8/11 星期三5356123476.ConclusionIron does not rust in dry air.(P45)结论铁在干燥的空气中不生锈。考点:conclusion n.结论Whatconclusionsdoyoudrawfromthesurvey?你从调查中得出什么结论?考点延伸1)阅读下列句子,指出黑体词的搭配及意义Icameto/reachedtheconclusionthatleadistwiceasheavyasiron.我得出了铅是铁的两倍重的结论。搭配:cometo/reachtheconclusionthat.意义:断定/得出的结论是注意:本句中that从句为同位语从句。2021/8/11 星期三545612347Itisimportanttodrawaconclusionfromthefacts.从事实中得出结论很重要。搭配:drawaconclusionfrom.意义:从中得出结论Inconclusion,workinghardistheonlywaytosucceed.总而言之,努力工作是成功的唯一方式。搭配:inconclusion意义:总之,最后2021/8/11 星期三5556123472)阅读下列句子,指出黑体词的词性及意义Thescientistconcludedfromtheexperimentthatthesubstancedoesntreactwithwater.那个科学家从试验中得出结论,这种物质不与水反应。词性:动词意义:断定,推论出Themeetingconcludedat8oclock.会议于8点结束。词性:动词意义:结束2021/8/11 星期三565612347concludev.断定,推论出;结束cometo/reachtheconclusionthat.得出结论是drawaconclusionfrom.从中得出结论inconclusion总之,最后2021/8/11 星期三5756123472021/8/11 星期三5856123472021/8/11 星期三5967512347.Add some oil to the water.在水中加些油。(P45)考点:add.to.把加入Youcanaddthefluidtothepowder.你可以把液体加入粉末中。考点延伸1)阅读下列句子,指出黑体词的搭配及意义Everyfailureonemeetswithaddstoonesexperience.吃一堑,长一智。搭配:addto意义:增加(困难等)Addupthenumbersinthiscolumn.把这一栏的数字合计一下。搭配:addup意义:把加起来2021/8/11 星期三606751234Allhisschooleducationaddeduptonomorethanoneyear.他所有的学校教育加起来不过一年。搭配:addupto意义:加起来是,总计,共达2)阅读下列句子,指出黑体词的词性、搭配及意义ThePresidentagreed,addingthathehopedforapeacefulsolution.总统表示赞同,并补充说他希望和平解决。词性:动词意义:补充说,又说Inaddition(tothenamesonthelist)therearesixothertourists.除此(名单上的名字)之外,还有六个游客。词性:名词搭配:inaddition(to.)意义:加之,除了()之外2021/8/11 星期三616751234形象记忆add短语PleaseaddupthesenumbersandImsuretheywilladduptomorethan1,000.请把这些数字加起来,我确信它们加起来有1000多。2021/8/11 星期三626751234add.to.把加入中addto增加(困难等)addup把加起来addupto总计,共达inaddition(to)除此之外2021/8/11 星期三6367512342021/8/11 星期三6467512342021/8/11 星期三652021/8/11 星期三66
