高一级14-Unit16ScientistsatWork讲解材料

Unit16ScientistsatWork科学家在工作WarmingUp:1.Describewhatyouseeineachpicture.Whatisitabout?1.Photo1showsstudentsatworkinachemistrylab.2.Photo2showsanEnglishbookcalledHamlet,adictionaryandanotebook.3.Photo3showstwostudentsdoinganexperiment.4.Photo4showsstudentslookingatsomethingthroughamicroscope.2.Whatarethenamesoftheschoolsubjectsinwhichyoustudysciences.1.Chemistry2.Physics3.Biology2.Inphysics,welearnaboutthelawsoftheuniverse（宇宙）,forexampleaboutNewtonandthereasonwhyallthingsonearthfalldown.3.Inbiologywelearnaboutlifeonearth,forexamplebylookingatthestructureofcells（细胞）.Review:evaluatescienceprosscientistconsliquidformationlabexperimentessay评价，评估赞成反对形成，结构实验科学科学家液体实验室文章、短文Listening:(difficultpoints)Whyshouldstudentsbecarefulsmellingfrombottle?becarefuldoing的意思是”做某事仔细或小心”,becareful后面常跟with,in,about等介词短语,也可跟todo或从句.为什么学生在闻从瓶子里冒出来的气味时要小心?大家对自己说的话应该很谨慎.要小心把药在安全的地方,不要让小孩拿到.peopleshouldbemorecarefulaboutthethingstheysay.Becarefulthatthemedicineiskeptawayfromchildren.那些盘子,要十分小心Youmustbecarefulwiththoseplates!Youmustbecarefulwhoyouacceptaliftfrom搭乘谁的车要小心.如果你眼睛里进了东西,该怎么办?“be+todo”

结构表示安排、命令、职责、义务、目的、用途、可能性、命中注定等.Whatistobedonewhenanythinggetsintoyoureyes?Wearetomeetattheschoolgate.Youaretobebackby10o’clock.我们约定在校门口碰头。（安排）你得在10点钟前回来。（命令）我谨通知你会议在杭州举行。(职责）刀是用来切割的。（用途）Iamtoinform（通知）youthatthemeetingwillbeheldinHangzhou.Aknifeistocutwith.他们注定以后永远不再见面。（命中注定）Theywerenevertomeetagain.ListeningText:MrDeng:Everybodylistencarefully!TodayMrsZhuwillexplainaboutthesafetyinstructions（安全说明）forthelab.Ifyouhaveanyquestionsyoucanraiseyourhand（举手）.MrsZhou:Forexperimentsthataredoneinthislab,everybodyshouldremember:Safetycomesfirst!（安全第一）Thisisveryimportant,

because

theexperiments（实验）

arefunandveryinteresting,butwedon’twantanyaccidents.（事故）Firstofall（首先）,don’tcomeinherewithoutyourteacher.Once（一旦）you’reinhere,followyourteacher’sinstructions（说明）.Whenyoucomeintothelab,studentswithlonghairshouldtieitup（把它系起来）,orputtheirhairundertheirclothes.Alwayslistencarefullytoyourteacher’sinstructionsanddon’ttouchanything,unlessyourteachertellsyoudo.MrDeng:Canyouexplainabitmoreaboutdoingexperiments?MrsZhu:Sure.Neverputyournosedirectly(径直地）

intoaglassoroverabottle.

Gases（气体）

canbeverydangerous.Instead,youshouldwave（波动、挥舞）someairinyourdirection（方向）andcarefullysmellit.Neverputyourfingersintoglassesandnevertasteanything!Whenworkingwithfire,becarefulabouttheflame（火焰）.Whenworkingwithelectricity（电）.Makesureyourhandsaredry（干的）.Whenanythinggetsintoyourmouthoreyes,immediately（立即）washwithalotofwater.Rememberthattheclassroomisn’taplayground（操场）.Don’tthrow（扔）thingsorstartplaying.Thatcanbedangerous.SunYao:Whataboutwhenweleave?MrsZhu:Whenclassisover,cleareverythingaway（清走）

andleavetheclassr