高一級(jí)14-Unit16ScientistsatWork講解材料

Unit16ScientistsatWork科學(xué)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（細(xì)胞）.Review:evaluatescienceprosscientistconsliquidformationlabexperimentessay評(píng)價(jià)，評(píng)估贊成反對(duì)形成，結(jié)構(gòu)實(shí)驗(yàn)科學(xué)科學(xué)家液體實(shí)驗(yàn)室文章、短文Listening:(difficultpoints)Whyshouldstudentsbecarefulsmellingfrombottle?becarefuldoing的意思是”做某事仔細(xì)或小心”,becareful后面常跟with,in,about等介詞短語(yǔ),也可跟todo或從句.為什么學(xué)生在聞從瓶子里冒出來的氣味時(shí)要小心?大家對(duì)自己說的話應(yīng)該很謹(jǐn)慎.要小心把藥在安全的地方,不要讓小孩拿到.peopleshouldbemorecarefulaboutthethingstheysay.Becarefulthatthemedicineiskeptawayfromchildren.那些盤子,要十分小心Youmustbecarefulwiththoseplates!Youmustbecarefulwhoyouacceptaliftfrom搭乘誰(shuí)的車要小心.如果你眼睛里進(jìn)了東西,該怎么辦?“be+todo”

結(jié)構(gòu)表示安排、命令、職責(zé)、義務(wù)、目的、用途、可能性、命中注定等.Whatistobedonewhenanythinggetsintoyoureyes?Wearetomeetattheschoolgate.Youaretobebackby10o’clock.我們約定在校門口碰頭。（安排）你得在10點(diǎn)鐘前回來。（命令）我謹(jǐn)通知你會(huì)議在杭州舉行。(職責(zé)）刀是用來切割的。（用途）Iamtoinform（通知）youthatthemeetingwillbeheldinHangzhou.Aknifeistocutwith.他們注定以后永遠(yuǎn)不再見面。（命中注定）Theywerenevertomeetagain.ListeningText:MrDeng:Everybodylistencarefully!TodayMrsZhuwillexplainaboutthesafetyinstructions（安全說明）forthelab.Ifyouhaveanyquestionsyoucanraiseyourhand（舉手）.MrsZhou:Forexperimentsthataredoneinthislab,everybodyshouldremember:Safetycomesfirst!（安全第一）Thisisveryimportant,

because

theexperiments（實(shí)驗(yàn)）

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

intoaglassoroverabottle.

Gases（氣體）

canbeverydangerous.Instead,youshouldwave（波動(dòng)、揮舞）someairinyourdirection（方向）andcarefullysmellit.Neverputyourfingersintoglassesandnevertasteanything!Whenworkingwithfire,becarefulabouttheflame（火焰）.Whenworkingwithelectricity（電）.Makesureyourhandsaredry（干的）.Whenanythinggetsintoyourmouthoreyes,immediately（立即）washwithalotofwater.Rememberthattheclassroomisn’taplayground（操場(chǎng)）.Don’tthrow（扔）thingsorstartplaying.Thatcanbedangerous.SunYao:Whataboutwhenweleave?MrsZhu:Whenclassisover,cleareverythingaway（清走）

andleavetheclassr