新冀教版九年级英语上册第26课课件VIP免费

Lesson26KeeptheCandleBurningThinkaboutit!1.Doyouthinkscienceisinteresting?Whyorwhynot?2.NameoneortwofamousChinesescientists.Whatdoyouknowaboutthem?Todaywearegoingtolookintoscienceagainandlearntodoanotherexperiment.Whatexperimentwillwedo?KeeptheCandleBurning!1.Whatdoweneed?acandleabigglassjaracandleholderashallowdishwithwatermatchesamatch2.Howdowedotheexperiment?3.Whatishappening?ReadthetextReadthetextsilentlyandsilentlyandfinishEx.1finishEx.11)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。3)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-tenthsCananegg“swim”inthewater?1.Whatdoweneed?Doanexperiment：First,_________________________.putsomesaltintotheglassThen,_______________.addsomewaternext,______________________________.mixthesaltandthewatertogetherFinally,______________________.puttheeggintotheglassTheeggcan’ttouchthebottomoftheglassanditswimsinthewater.3.Whatishappening?4.Why?盐水的密度变大，鸡蛋的浮力大于重力。1.Therearelotsofmatchsinthesmallbox.2.Canyouletmyunclelaughing?3.You’reveryill,soyoumuststoptosmoke.4.Fillthedishhalffillofwater.5.Thereisaboutone–fiveoxygenintheair.6.Thereareabouttwo–thirdstudentsintheclassroom.7.Iusedoutmymoney.Canyoulendmesome?Correctthemistakes.matcheslaughsmokingfullone-fifthtwo-thirdsup用所给单词的正确形式填空。1.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/litSecondburningtoplaygoing请根据课文内容,以“AnInterestingExperiment”为题写一篇小作文。