Lesson26KeeptheCandleBurningLookintoScienceUnit5

Sayhowtodotheexperiment.candleacandleholder

燭臺/?h??ld?/n.支托物；持有者

ashallowplateshallow/???l??/adj.淺的lightermatchesholdern.

支托物；持有者shallowadj.

淺的lightern.

打火機；點火器matchn.

火柴examine/?ɡ?z?m?n/v.

檢查oxygen/??ks?d??n/n.

氧氣Readandputthesentenceintherightorder.

Lightthecandle.Examinethewaterinthejar.Whatcanyousee?Carefullyputthejaroverthecandleuntilthetopofthejarrestsonthedish.Putthecandleinthecandleholder.Fillthedishhalffullwithwater.Letthecandleburnfortwoorthreeminutes.Putthecandleholderonthedish.4761352Readandanswerthequestions.1.Howmuchwatershouldwefillthedish?2.Howlongshouldweletthecandleburn?3.Whereshouldweputthejar?4.Whatishappening?Halffullofthedish.Twoorthreeminutes.Putitoverthecandleuntilthetopofthejarrestsonthedish.Thewaterinsidethejarrises.Readandthinkabout.1.Howfardoesthewaterrise?2.Whydoesthewaterrise?Onefifthofthejar.Whenthecandlestopsburning,ithasusedupalltheoxygeninthejar.Sotheairpressureoutsidethejarisstrongerthanthatinthejar,andtheforceoftheairoutsidemakesthewaterinsiderise.put…input…onfill…withlightlet…burncarefullyput…overexamine1.alighterormatches打火機或火柴

match①n.火柴，復(fù)數(shù)形式為matches。

aboxofmatches一盒火柴②

n.比賽，復(fù)數(shù)形式matches。

threebasketballmatches三場籃球賽③v.相稱；相配

Yourtiematchesyoursuit.你的領(lǐng)帶和你的套裝相配。2.Examinethewaterinthejar.檢查廣口瓶里的水。

examinev.

①檢查。后接名詞或代詞作賓語。

Thedoctorexaminedthepatient.

那位醫(yī)生檢查了那位病人。

②考核，測驗

Ourteacherwillexamineusonhistory.

我們老師將測驗我們歷史。【拓展】examination（examine的名詞形式）檢查，考試

Allpatientshadacompletephysicalexamination.

所有的病人都進行了全面體檢。

haveanentranceexamination參加入學(xué)考試3.Whenthecandlestopsburning,ithasusedupalltheoxygenintheair.當(dāng)蠟燭停止燃燒時，它用盡了空氣中所有氧氣。useup用光；用盡（=runoutof）

其主語往往是人，賓語往往是被用光的物。Jimuseduphismoneytobuythecomputer.吉姆為了買電腦花光了所有的錢?！咀⒁狻縰seup為“動詞+副詞”結(jié)構(gòu)，名詞作賓語時，位于up前后都可，人稱代詞作賓語時，須放于use與up之間。Thereisnopaper.Wehaveuseditup.

沒有紙了。我們已經(jīng)用完了。類似的還有：thinkover,lookup,putup,eatup,takeaway,…4.Becauseaboutonefifthoftheairismadeupofoxygen…

因為空氣中氧氣的含量大約占五分之一……

（1）分?jǐn)?shù)的表達(dá)分?jǐn)?shù)=分子分母基數(shù)詞序數(shù)詞>1序數(shù)詞+s1/3

onethird1/6onesixth3/4threefourths

2/5twofifths【注意】“分?jǐn)?shù)+of+名詞”作主語時，謂語動詞的單復(fù)數(shù)由of后名詞的形式而定。

AbouttwothirdsofthewaterintherivercomesfromYiRiver.這條河三分之二的水來自沂河。Abouttwothirdsofthechildrenlikeplayingcomputergames.三分之二的孩子喜歡玩電腦游戲。(2)bemadeupof…由……組成表示由多種成分、團體、成員或單位等組成，并強調(diào)整體的構(gòu)成或組成。

Theteamismadeupof5doctorsand10nurses.

這個隊由5名醫(yī)生和10名護士組成。

【拓展】makeup組成，構(gòu)成，形成

Womenstudentsmakeup56%ofthestudentnumbers.

女生占學(xué)生人數(shù)的56%。5.Read,findandtranslate.fill…withsth.onthedishput…oversth.thetopofstopdoingsth.useuponefifthof…bemadeupof…用某物裝滿……在盤子里把……罩在某物上面……頂部停止做某事用光，用完……的五分之一由……組成Workingroups.Talkaboutaninterestingexperimentyoudo.單項選擇。1._____ofthestudentsinourclass____goingtosummercampinBeijingnextweek.A.Twofifths;is B.Secondfifths;areC.Secondfifths;is D.Twofifths;are2.Ifsuccessisagate,theroadtowardsitmust_______difficulties.A.bemadeofB.bemadefromC.bemadeupofD.bemadebyDC3.Wehave______allthewater.Pleasegiveussomemore.A.turnedupB.usedupC.eatenupD.setup4.Pleasefillthejar______oil.A.ofB.withC.intoD.over5.Weshouldstop_______disposablechopsticks(一次性筷子)andrem