2019-2020学年高中英语 Unit 4 Astronomy the science of th

Unit4Astronomy:thescienceofthestars天文学是一门古老而常新的自然科学,其研究对象是宇宙的规律,是研究天体的结构、形态、分布、运行和演化等的学科。Peoplehavealwayswatchedthebeautifulnightsky.Manyancientpeopleoftheworldcloselystudiedthestarsforsignsfromtheirgods.TheMayan①andAztecsofCentralAmericaandMexicobuiltspecialtallbuildingstoobservethestars.TheancientpeopleofEgypt,Greece,Italy,andChinaalsostudiedthestars.ThepeoplewholivedontheislandsofthePacificusedthestarstofindtheirwayacrosshugeareasofocean.Peopletodaystilllooktothestarsforinformation—notaboutancientgods,butabouttheuniverse.Moderntechnologyhasmadeitpossibletoseeobjectsinspacethatarethousandsofmillionsofkilometresaway.However,withouttechnologyyoucanseeallofthesameobjectsinthenightskythatancientpeoplesaw.Thereisalottoseeandstudy.Ittakesalittleworkandalittleknowledge,butitisreallyveryeasy.Ifyouliveinthenorthernpartoftheworld,youcansearchthenightskytothenorthandfindPolaris②.AncientpeoplewatchedPolarisforalongtimeanddiscoveredthatitmovesverylittle.Itcanalwaysbefoundinthesameplaceinthenorthernsky.AncientpeopleusedthePolaristoguidetheirshipsacrossoceans.Inthesouthernpartoftheworld,youcanseeAlphaandBetaCentauri③inthenightsky.TheypointthewaytothebeautifulgroupofstarscalledtheSouthernCross④.AncientpeopleusedtheSouthernCrosstoguidetheirships.单词注释①Mayanadj.玛雅人的,玛雅语的n.玛雅人,玛雅语②Polarisn.北极星③AlphaandBetaCentauri半人马座阿尔法和贝塔星④SouthernCross南十字星座难句剖析Moderntechnologyhasmadeitpossibletoseeobjectsinspacethatarethousandsofmillionsofkilometresaway.译文现代科技使得我们能够看到距离数十亿千米太空外的物质。剖析it放在made后做形式宾语,真正的宾语是“toseeobjects...away”。导读诱思1.WhatdidpeoplewholivedontheislandsofthePacificusethestarstodo?答案:Tofindtheirwayacrosshugeareasofocean.2.Howdidancientpeopleinthesouthernpartoftheworldguidetheirships?答案:TheyusedtheSouthernCrosstoguidetheirships.