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天天资源网 / 初中英语 / 教学同步 / 冀教版 / 九年级全册 / Unit 5 Look into Science / Lesson 26:Keep the Candle Burning / 翼教版九年级英语上册Lesson 26课件

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Lesson26KeeptheCandleBurning! useup的用法I.Learningaims:Masterthenewwordsandphrases:holder,shallow,lighter,match,examine,oxygenII.Learningimportantanddifficultpoints: NewWordsholdershallowlightermatchexamineoxygen ◆Doyouthinkscienceisinteresting?Whyorwhynot?◆NameoneortwofamousChinesescientists.Whatdoyouknowaboutthem?ThinkAboutIt! LanguagePoints as作连词,意为“当……时候”,引导时间状语从句。如:1.Asthecandleburns,itusesupoxygenintheair.当蜡烛燃烧时,它要耗尽空气中的氧气。Ashegrewup,hebecamesilent.他长大以后,变得沉默寡言。 useup意为“用完;用光”。useup是动词加副词型短语,宾语是代词时必须放在use和up的中间;宾语是名词时,放在use和up的中间或up的后面均可。如:Don'tuseupallthehotwater.不要用光所有的热水。 (1)分数的表达方式:分子为基数词,分母为序数词。并且当分子大于1时,分母要用复数。如:2.Becauseaboutonefifthoftheairismadeupofoxygen,thewaterrisesandfillsaboutonefifthofthejar.空气中含有五分之一的氧气,所以水位上升并且占了罐子的五分之一。five-eighths八分之五 (2)带有分数的名词作主语时,谓语动词的单复数,要根据分数所修饰的名词来确定。如果分数所修饰的是可数名词复数,谓语动词用复数形式;如果分数所修饰的是不可数名词,谓语动词用单数形式。如:Aboutthree-fifthsofthestudentsinClassOneareboys.一班五分之三的学生是男生。 Exercises 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/lightedhallowurnmatchesoxygen 1.Pleasepassmethebottlefull______water.2.Heissohungrythathehaseaten______allthefoodontheplate.3.Iusuallyputthecandle______thecandleholder.4.Mr.Gaocameintotheclassroom______abookinhishand.5.Therainydaywilllast______threedays.II.用适当的介词填空。forofupinwith 1.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,翻译下列句子,每空一词。stopsburninghasusedupThree-fifthsTofinishfor HomeworkChooseaexperimentthatyoudidbefore,anddescribeitinEnglish. 查看更多

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