九年级英语上册 Unit 5 Look into Science Lesson 26 Keep the Candle Burning 冀教版

Lesson26Unit5LookintoScience5Lesson26KeeptheCandleBurning学习目标objectivesMasterthenewwordsandphrases:holder,shallow,lighter,match,examine,oxygen；useupLearntodotheexperimentwithcandle.Knowmoreaboutscience.holdern.支托物candleholdern.蜡烛座shallowadj.浅的lightv.点燃lightern.打火机；点火器matchn.火柴burnv.燃烧examinev.检查oxygenn.氧气useup用完WordsLeadinmatchburncandleholdern.ThinkaboutitDoyouthinkscienceisinteresting①?Whyorwhynot?NameoneortwofamousChinesescientist.Whatdoyouknowaboutthem?Scienceissointeresting!I’msureyou’lllikethisexperiment!Whatdoyouneed?AcandleAcandleholderAbigglassjarAshallowdishwithwater②matchesWhile-readingWhatdoyoudo?1.Putthecandleinthecandleholder.2.Putthecandleholderinhedish.3.Fillthedishhalffullofwater.4.Lightthecandle③.5.Letthecandleburnfortwoorthreeminutes.6.Carefullyputthejaroverthecandleuntilthetopofthejarrestsonthedish④.7.Lookatthewaterinthejar.Whatobservationcanyoumake?Whatishappening?Asthecandleburns⑤,itusesupoxygenintheair.Whenthecandlestopsburning,ithasusedupalltheoxygeninthejar.Thewaterinsidethejarthenrises⑥.Howfardidthewaterrise?Thereisaboutone-fifthoxygenintheair,sothewaterrisesandfillsaboutone-fifthofthejar⑦.Keepthecandleburning!让蜡烛燃烧！keepsth.(sb.)doing,使某物（某人）保持做某一动作。e.g.Don’tkeepthewaterfalling.不要再让水继续流了。Shekeptmeholdingthefarwithmyhand.她让我一直用手握住瓶子。1.Doyouthinkscienceisinteresting?你认为自然有趣吗？science科学；scientist自然科学，科学家e.g.WangPenglovesscienceverymuch.Hewantstobeascientist.王鹏非常喜欢科学。他想成为一名科学家。2.ashallowdishwithwater一个装水的浅盘shallowadj.浅的反义词：deep深的e.g.Pleasepassmeashallowdish(plate).请递给我一个浅盘子。Theideaofthepassageisveryshallow.Icanunderstandit.这篇短文的意思很浅显，我能读懂它。①lightv.点燃，照亮It’stimetolightup.该点灯了。It’scoldintheroom.Let’slightafire.房间里太冷了。咱们把火生起来吧。3.lightthecandle点亮蜡烛=makethecandleburn使蜡烛燃烧②lightn.光，光线（不可数）；电灯（可数）Themoonlightesintotheroomthroughthewindow.月光透过窗子照进了房间。Don’tforgettoturnoffthelightswhenyouleave.当你离开的时候不要忘了关灯。③lightadj.颜色浅的（反义词dark）；（分量）轻的（反义词heavy）Roselikesthelightgreenskirt.罗斯喜欢那件淡绿色的裙子。Thebagisverylight.Marycancarryiteasily.那个包很轻。玛丽能轻易地把它搬起来。4.Carefullyputthejaroverthecandle.小心地把瓶子倒扣在蜡烛上。carefullyadv.仔细地，小心地carefuladj.细心的，认真的carev.关心；在意care(v.)+ful=careful(adj.)careful(adj.)+ly=carefully(adv.)Jennyisacarefulgirl.Shedoeseverythingcarefully.Sheoftencaresforothers.詹妮是一个认真的女孩。她做任何事情都非常仔细。她经常关心他人。5.Asthecandleburns,itusesupoxygenintheair.当蜡烛燃烧的时候，需要消耗空气中的氧气。①as在此为“当……的时候”。它有着多重意义。PleasedoitagainasIdid.请像我做的那样再做一遍。（像……一样）Asitislate,Ihavetoleavenow.由于天太晚了，我得走了。（由于，因为）Youwillfindthebuildingasyoureachtheendofthestreet.当你走到这条街那头，你就会看到那座大楼。（当……时候）②useup用光，耗尽。表示完全，彻底。Hewashungryandateupthebread.他饿了，把面包全吃光了。（eatup吃光）Jimuseduphismoneytobuytheputer.吉姆为了买电脑花光了所有的钱。6.Thewaterinsidethejarthenrises.这时瓶子里的水就会上升。risev.上升，升起（不及物）Thesunrisesintheeast.太阳从东方升起。Theriverisrisingaftertheheavyrain.大雨后河水上涨。注意：raise“提高，升起”（及物）LiuFeiraisedherhandandaskedaquestion.刘菲举手问了一个问题。7.*Thereisaboutonefifthoxygenintheair,sothewaterrisesandfillsaboutone-fifthofthejar.氧气在空气中占五分之一，所以水面上升并且占据了瓶子的五分之一。*分数的表达：分数=分子分母基数词序数词1序数词>1序数词+se.g.1/3，onethird1/5,onefifth3/4,threefourths2/5,twofifthsPost-readingLet’sdoitFinishtheexercisesonpage69andcheckthem.1.Thewaterhereiss______,notdeep.2.Letthefireb______forafewhours.Theroomwillbeverywarm.3.Look!Theboyisplayingwithsome________(火柴).4.Thereislittle______(氧气)atthetopofthemountains.5.Mr.Blacksatdownand__________(点燃)acandle.I.根据首字母或汉语提示，完成下列句子。lit/lightedhallowurnmatchesoxygenPractice1.Pleasepassmethebottlefull______water.2.Heissohungrythathehaseaten______allthefoodontheplate.3.Iusuallyputthecandle______thecandleholder.4.Mr.Gaocameintotheclassroom______abookinhishand.5.Therainydaywilllast______threedays.II.用适当的介词填空。forofupinwith1.当蜡烛停止燃烧时，它已用光了空气中所有的氧气。Whenthecandle_______________,it________________alltheoxygenintheair.2.我们班里五分之三是女生。__________ofthestudentsinourclassaregirls.4.为了完成那项工作，他工作了十个小时。_________thework,hehasworked____tenhours.III.根据汉语提示， 翻译 阿房宫赋翻译下载德汉翻译pdf阿房宫赋翻译下载阿房宫赋翻译下载翻译理论.doc 下列句子，每空一词。stopsburningupThreefifthsTofinishforhasusedHomeworkChooseaexperimentthatyoudidbefore,anddescribeitinEnglish.Homework