八年级英语Look into Science课件5.ppt

,Lesson30KeeptheCandleBurning!,Eastereggs,Easterbasket,EasterBunny,Correctthemistakes:TheyhavehidmanyEastereggs.Icantfindmywatch.Itsgoing.DoyouhavelotsoffuntohuntforEastereggs?Hefeelsenoughhappilytojump.5.DannyismakinganEasteregghunttohiscousin.,hidden,_,_,gone,_,hunting,_,happyenough,_,for,Thinkaboutit!Whatdoyouthinkofscience?Doyouthinkscienceisinteresting?Whyorwhynot?NameoneortwofamousChinesescientists.Whatdoyouknowaboutthem?Todaywearegoingtolookintoscienceagainandlearntodoanotherexperiment.Whatexperimentwillwedo?,Readquicklyandfindtheanswer:Whatexperimentwillwelearntodo?,Readcarefullyandanswerthequestions:,Whatsthetitle(题目)ofthereading?2.Whatdoyouneedtodotheexperiment?,acandleacandleholderabigglassjarashallowdishwithwatermatches,KeeptheCandleBurning!,acandle,acandleholder,abigglassjar,ashallowdishwithwater,amatch,matches,Readcarefullyandanswerthequestions:,3.Howdowedotheexperiment?,1)Putthecandleinthecandleholder.,2)Putthecandleholderinthedish.,3)Fillthedishhalffullofwater.,4)Lightthecandle.,5)Letthecandleburnfortwoorthreeminutes.,6)Carefullyputthejaroverthecandleuntilthetopofthejarrestsonthedish.,7)Lookatthewaterinthejar.Whatobservationcanyoumake?,4.Whatishappening?,useupoxygenone-fifth,Languagenotes:,2.Tomakeacandleburn,you“lightit”.,make/let/havesth./sb.dosth.“使某物/某人做某事”,burnburned/burntburned/burnt,lightlighted/litlighted/lit,1.Fillthedishhalffullofwater.,halfadv.,Thebottleisonlyhalffull.,3.Carefullyputthejaroverthecandleuntilthetopofthejarrestsonthedish.,lightadj.n.v.,makethecandleburn=lightthecandle,Languagenotes:,Jimuseduphismoneytobuythecomputer.,4.Asthecandleburns,itusesupoxygenintheair.,usesth.up“用尽(材料)，设法利用(剩余的材料或时间)”,Sheusedupthechickenbones(骨头)tomakesoup.,5.Howfardidthewaterrise?,eatup“吃光”drinkup“喝光”,Shewashungryandateupthebread.,Hedrankupallthewater.,水会上升多少？,6.Thereisaboutone-fifthoxygenintheair,sothewaterrisesandfillsaboutone-fifthofthejar.,one-fifth“五分之一”,Languagenotes:,分数由分子及分母两部分构成。用英语表达时，分子用基数词，分母用序数词。若分子为1，则分母的序数词为单数形式，若分子大于1，则分母的序数词用复数形式。one(a)half或onesecond(one-second)=one(a)quarter或one-quarter,CardinalOrdinalFractionalNumberNumberNumber基数词序数词分数,onetwothreefourfivesixten,firstsecondthirdfourthfifthsixthtenth,one-thirdone-fifthone-sixthtwo-thirdsthree-seventhsfour-ninths,Languagenotes:,二分之一三分之一四分之一四分之三五分之二十分之九,a/onehalf(onesecond),one-third,three-fourths,threequarters,onequarter,two-fifths,nine-tenths,口诀：分子基，分母序。分子1，分母加s,Correctthemistakes:Therearelotsofmatchsinthesmallbox.Canyouletmyunclelaughing?Youreveryill,soyoumuststoptosmoke.Fillthedishhalffillofwater.Thereisaboutonefiveoxygenintheair.Thereareabouttwothirdstudentsintheclassroom.7.Iusedoutmymoney.Canyoulendmesome?,matches,_,_,laugh,_,smoking,one-fifth,_,full,_,_,two-thirds,_,up,用所给单词的正确形式填空：1.Youareverytired.Youdbetterstop_(have)arest.2.Whatdoyouusetomakeacandle_(burn)?3.Youshouldputthejaroverthecandle_(careful).4.What_(observe)canyoumake?5.Pleasecuttheappleinto_(half).6.He_(light)acandleandtheroomwasbright.7._(two),askthestudentstoguesswhatwillhappen.8.Hekeptthecandle_(burn)fortwohours.9.Itstime_(play)basketball.10.Whatabout_(go)forawalk?,tohave,burn,carefully,observation(s),halves,lighted/lit,Second,burning,toplay,going,Atask:LearntospeakEnglish,1)Putthecandleinthecandleholder.2)Putthecandleholderinthedish.3)Fillthedishhalffullofwater.4)Lightthecandle.5)Letthecandleburnfortwoorthreeminutes.6)Carefullyputthejaroverthecandleuntilthetopofthejarrestsonthedish.7)Lo