Lesson26

KeeptheCandleBurning

ThinkAboutIt!1.Doyoulikedoingscienceexperiments?Whyorwhynot?2.Whatwillhappenifyouputajarupsidedownoveraburningcandle?Newwordsmatchn.火柴holdern.支撐者shallowadj.淺的

lightern.打火機

examinev.檢查oxygenn.氧氣LanguagePoints1.Lightthecandle.點亮蠟燭。light此處用作動詞，意為“點亮”。還可作名詞，意為“光；燈”。作形容詞，意為“輕的，淺的，明亮的”。Iwantaroomwithgoodlight.我要一個采光好的房間。（名詞）Mysweaterislightblue.我的毛衣是淺藍色的。（形容詞）Hesatdownandlitacigarette.他坐下點了一只香煙。（動詞）2.Becauseaboutonefifthoftheairismadeupofoxygen,thewaterrisesandfillsaboutonefifthofthejar.因為大約五分之一的空氣是由氧氣組成的，水上升填充了大約廣口瓶的五分之一。1)onefifth意為“五分之一”。英語中表示分數時，分子用基數詞，分母用序數詞；分子與分母間的連字符可加可不加。若分子大于1，分母則加-s。Twothirdsoftheapplesarered.三分之二的蘋果是紅色的。2)bemadeupof意為“由……組成”，of后可接人也可接物，指某物或組織的結構成分。Theclubismadeupoftwelvegirls.這個俱樂部是由12個女孩組成的。根據句意及提示補全單詞。1.Pleaseputthecandleinthecandleh______.2.Thebowlistoos______tofilltoomuchwater.3.Howmany________(火柴)arethereinthebox?4.Youmust_______(檢查)yourhomeworkafteryoufinishit.PracticeolderhallowmatchesexamineLesson26KeeptheCandleBurning

Thinkaboutit!Doyouthinkscienceisinteresting?Whyorwhynot?2.NameoneortwofamousChinesescientists.Whatdoyouknowaboutthem?Todaywearegoingtolookintoscienceagainandlearntodoanotherexperiment.Whatexperimentwillwedo?KeeptheCandleBurning!1.Whatdoweneed?acandleabigglassjaracandleholderashallowdishwithwatermatchesamatch2.Howdowedotheexperiment?3.Whatishappening?Languagepoints1)分數由分子及分母兩部分構成。用英語表達時，分子用基數詞，分母用序數詞。2)若分子為1，則分母的序數詞為單數形式，若分子大于1，則分母的序數詞用復數形式。

?＝one(a)half或onesecond(one-second)?=one(a)quarter或one-quarter分數的英語表達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訣: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用所給單詞的正確形式填空。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請根據課文內容,以“AnInterestingExperiment”為題寫一篇小作文。Cananegg“swim”inthewater?1.Whatdoweneed?Doanexperiment：First,_________________________.putsomesaltintotheglassThen,_______________.addsomewaternext,______________________________.mixthesaltandthewatertogetherFinall