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Unit5LookintoScienceLesson26Ⅰ.根据汉语提示写出下列单词或短语1.浅的adj._______2.hold为动词,意为“_____”,其名词为“______”,意为“支托物;持有者”。3.light为名词,意为“光,光线”;还可作动词,意为“______”,“lighter”为名词,意为“______________”。shallowholder点燃打火机;点火器支撑4.match作动词,意为“__________”;作名词,意为“火柴”,是_________,还可意为“比赛,对手”。5.examine作_____,意为“检查”,其名词形式为“___________”,意为“考试,检查”。相称;相配可数名词动词examinationⅡ.根据汉语提示完成下列句子1.倒半碟水。Fillthedish_______withwater.2.小心地把广口瓶放在蜡烛上方直到广口瓶的顶部倒置在盘子上。Carefully___thejar____thecandle_____thetopofthejar____onthedish.halfputoveruntilrestsfull3.当蜡烛停止燃烧的时候,它已经用光了空气中所有的氧气。______thecandle____________,it__________alltheoxygenintheair.4.水会上升多少呢?________doesthewaterrise?WhenstopsburninghasusedupHowfar5.因为大约五分之一的空气是由氧气组成,所以水上升并且充满广口瓶的大约五分之一。_______about________oftheairismadeupofoxygen,thewater____and____aboutonefifthofthejar.BecauseonefifthrisesfillsⅢ.Readthetextandanswerthequestions1.Howlongshouldyoumakethecandleburnbeforeyouputthejaroverit?___________________.Twoorthreeminutes2.Whydoesthewaterriseandfillaboutonefifthofthejar?________________________________________________Becauseaboutonefifthoftheairismadeupofoxygen.要点1useup用光,用完Step1难点·探(1)useup是什么结构的短语?(2)常见的与up相关的短语有哪些?Step2语境·悟*Whenthecandlestopsburning,ithasusedupalltheoxygenintheair.当蜡烛停止燃烧时,它已经用完了空气中所有的氧气。(P68)*Leavemesomewatertowash.Don’tuseitup.给我留点水来洗。别用光了。Step3知识·得useup的用法useup意为“用完;用光”,是“动词+副词”短语。名词作宾语时,名词可放在副词前,也可放在副词后;代词作宾语时,代词则必须放在副词前。该短语相当于runoutof...,可用于被动语态。【拓展延伸】与up有关的短语Step4考点·练()①(2018·河池中考)Theboyranoutofhismoneytobuythebookbecauseheloveditverymuch.世纪金榜导学号A.tookupB.gaveupC.pickedupD.usedupD②——肥皂在哪里?—Whereisthesoap?——抱歉,我用完了。—Sorry,Ihave_________.③(2018·曲靖中考)当我们班上最好的歌手出现时,每个人都兴奋地喊叫起来。Whenthebestsingerinourclass__________,everyoneshoutedwithexcitement.useditupshowedup要点2分数的表达法Step1难点·探(1)你知道分数的英语表达方法吗?(2)分数短语在句中作主语,谓语动词用单数形式还是复数形式?Step2语境·悟*Becauseaboutonefifthoftheairismadeupofoxygen,thewaterrisesandfillsaboutonefifthofthejar.因为大约五分之一的空气是由氧气组成,所以水上升并且充满广口瓶的大约五分之一。(P68)*Twothirdsofthewateraroundtheworldispolluted.世界上三分之二的水被污染了。Step3知识·得(1)分数的分子用基数词,分母用序数词;当分子大于1时,分母要用复数形式;分子和分母之间可以加连字符,也可以不加。(2)分数后面跟of短语作主语时,谓语动词的单复数由of后面的名词的单复数决定。【助记】分子基数词,分母序数词,分子大于1,分母加s。Step4考点·练()①(2018·黄冈中考)—Dad,about________ofourclassmateswearglasses.—Oh,that’sterrible.Youallshouldtakegoodcareofyoureyes.世纪金榜导学号A.threefourthB.thirdfourthC.thirdfourthsD.threequartersD()②(2018·咸宁中考)—NowadaysChinahasabout25,000kilometersofhigh-speedrailways.—That’s________oftheworld’stotal.A.twothirdB.two-thirdC.twothirdsD.twothreeC