冀教版九年级英语上册 （Keep the Candle Burning）Look into Science!课件教学

Lesson26

KeeptheCandleBurning

ThinkAboutIt!1.Doyoulikedoingscienceexperiments?Whyorwhynot?2.Whatwillhappenifyouputajarupsidedownoveraburningcandle?Newwordsmatchn.火柴holdern.支撑者shallowadj.浅的

lightern.打火机

examinev.检查oxygenn.氧气LanguagePoints1.Lightthecandle.点亮蜡烛。light此处用作动词，意为“点亮”。还可作名词，意为“光；灯”。作形容词，意为“轻的，浅的，明亮的”。Iwantaroomwithgoodlight.我要一个采光好的房间。（名词）Mysweaterislightblue.我的毛衣是浅蓝色的。（形容词）Hesatdownandlitacigarette.他坐下点了一只香烟。（动词）2.Becauseaboutonefifthoftheairismadeupofoxygen,thewaterrisesandfillsaboutonefifthofthejar.因为大约五分之一的空气是由氧气组成的，水上升填充了大约广口瓶的五分之一。1)onefifth意为“五分之一”。英语中表示分数时，分子用基数词，分母用序数词；分子与分母间的连字符可加可不加。若分子大于1，分母则加-s。Twothirdsoftheapplesarered.三分之二的苹果是红色的。2)bemadeupof意为“由……组成”，of后可接人也可接物，指某物或组织的结构成分。Theclubismadeupoftwelvegirls.这个俱乐部是由12个女孩组成的。根据句意及提示补全单词。1.Pleaseputthecandleinthecandleh______.2.Thebowlistoos______tofilltoomuchwater.3.Howmany________(火柴)arethereinthebox?4.Youmust_______(检查)yourhomeworkafteryoufinishit.PracticeolderhallowmatchesexamineLesson26KeeptheCandleBurning

Thinkaboutit!Doyouthinkscienceisinteresting?Whyorwhynot?2.NameoneortwofamousChinesescientists.Whatdoyouknowaboutthem?Todaywearegoingtolookintoscienceagainandlearntodoanotherexperiment.Whatexperimentwillwedo?KeeptheCandleBurning!1.Whatdoweneed?acandleabigglassjaracandleholderashallowdishwithwatermatchesamatch2.Howdowedotheexperiment?3.Whatishappening?Languagepoints1)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。2)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。

½＝one(a)half或onesecond(one-second)¼=one(a)quarter或one-quarter分数的英语表达二分之一三分之一四分之一四分之三五分之二十分之九口诀:分子基，分母序。分子﹥1，分母加s。a/onehalf(onesecond)one-thirdonequarterthree-fourthsthreequarterstwo-fifthsnine-tenthsTherearelotsofmatchsinthesmallbox.Canyouletmyunclelaughing?You’reveryill,soyoumuststoptosmoke.Fillthedishhalffillofwater.Thereisaboutone–fiveoxygenintheair.Thereareabouttwo–thirdstudentsintheclassroom.7.Iusedoutmymoney.Canyoulendmesome?Correctthemistakes.matcheslaughsmokingfullone-fifthtwo-thirdsup用所给单词的正确形式填空。Youareverytired.You’dbetterstop______(have)arest.2.Whatdoyouusetomakeacandle_____(burn)?3.Youshouldputthejaroverthecandle________(careful).4.What____________(observe)canyoumake?tohaveburncarefullyobservation(s)5.Pleasecuttheappleinto______(half).6.He_________(light)acandleandtheroomwasbright.7.______(two),askthestudentstoguesswhatwillhappen.8.Hekeptthecandle_______(burn)fortwohours.9.It’stime______(play)basketball.10.Whatabout_____(go)forawalk?halveslighted/litSecondburningtoplaygoingHomework请根据课文内容,以“AnInterestingExperiment”为题写一篇小作文。Cananegg“swim”inthewater?1.Whatdoweneed?Doanexperiment：First,_________________________.putsomesaltintotheglassThen,_______________.addsomewaternext,______________________________.mixthesaltandthewatertogetherFinall