Unit4Astronomythescienceofthestars【题目优选】假如你叫李华，接受了一项写作任务，要为英语校报写一篇有关UFO的文章。请根据以下信息，简要介绍UFO。名称简介UFO是UnidentifiedFlyingObject的缩写世界十大未解之谜之一有关事件首次目击报告是在1878年的美国从那以后目击报告层出不穷，有许多是虚假的人们的看法来自其他行星的太空飞船一种自然现象外星人研究状况约三分之一的国家对UFO展开研究大量关于UFO的图书和期刊出版有些大学开设UFO课程参考词汇：外星人alien【经典范文】UFO,whichisshortforUnidentifiedFlyingObject,haslongbeenregardedasoneofthetop10unsolvedmysteriesintheworld.ThefirstUFOsightingwasreportedtohavehappenedinAmericain1878.Sincethen,numeroussightingshavebeenreportedallovertheworld,manyofwhichturnedouttobefalse.SomepeoplethinkUFOsarespaceshipsfromotherplanets.Othersbelievethatthey'rejustakindofnaturalphenomenonandstillothersguessthey'realiens.NowaboutonethirdofthecountriesintheworldaredoingresearchonUFOs,aboutwhichmanybooksandjournalshavebeenpublished,andinsomeuniversitiescoursesareevensetuptostudyUFOs.【名师点拨】本文细节完整，层次清晰，文中运用了较高级的词汇和短语。如：beshortfor(是……的简称)，beregardedas(被认为是……),turnouttobe(结果证明是……),setup(建立，成立)等。并且运用了多样化的句式结构。如：定语从句：whichisshortforUnidentifiedFlyingObject,manyofwhichturnedouttobefalse,aboutwhichmanybooksandjournalshavebeenpublished;宾语从句：thatthey'rejustakindofnaturalphenomenonandstillothersguessthey'realiens等。这些短语和句式的运用都很准确、地道，充分体现了作者扎实的语言运用能力，提升了文章档次。1．核心单词(1)system(n.)系统；体系；制度(2)theory(n.)学说；理论→theoretical(adj.)理论上的(3)violent(adj.)猛烈的；激烈的；强暴的→violence(n.)暴力→violently(adv.)猛烈地(4)unlike(prep.)与……不同；不像→(反义词)like(prep.&v．)像；喜欢→dislike(v.&n．)不喜欢(5)harmful(adj.)有害的→harm(n.)害处(vt.)对……有害(6)exist(vi.)存在；生存→existence(n.)存在(7)puzzle(vt.&vi.)(使)迷惑；(使)为难(n.)谜；难题→puzzled(adj.)迷惑不解的(8)pull(n.&vt.)拉(力)；拖；牵引力2．阅读单词(1)religion(n.)宗教；宗教信仰(2)billion(pron.&n.&adj.)(英旧)万亿；(美)十亿(3)globe(n.)球体；地球仪；地球(4)atmosphere(n.)大气层；气氛(5)fundamental(adj.)基本的；基础的(6)chain(n.)链子；连锁；锁链(7)multiply(vi.&vt.)乘；增加(8)thus(adv.)因此；于是(9)biology(n.)生物学(10)gravity(n.)万有引力；重力(11)gentle(adj.)温和的；文雅的(12)climate(n.)气候(13)crash(vi.&vt.)碰撞；坠落(14)float(vt.&vi.)(使)浮动(n.)漂浮物【即景活用】用括号内所给的单词的适当形式填空1．HarvardUniversitytakesinanyoutstandingstudentregardlessof________(religious),colourorbackground.答案：religion2．Water________(exist)inthreeforms,whichareliquid,gasandsolid.答案：exists3．Someexpertsthinkreadingisthe________(fundament)skilluponwhichschooleducationdepends.答案：fundamental4．Fruitjuicecanbe________(harm)tochildren'steeth.答案：harmful5．Thereisalotofrubbish________(float)onthesurfaceoftheriver.答案：floating6．Whatmakesme________(puzzle)iswhyheleftthecountrywithouttellinganyone.答案：puzzled7．Manypeopleareworriedaboutthefactsabout________(globe)warming.答案：global8．Shegotinterestedinplantsanddecidedtobea________(biology)．答案：biologist9．Thevolcanoerupted________(violent),yetthevillageatthefootofitsurvived.答案：violently10．Themantookthelittleboy________(gentle)inhishandandputhimupintothetree.答案：gently联想积累1．“太空”单词集锦①astronomern．天文学家②astronomyn．天文...
