Unit4Astronomy：thescienceofthestars一、课前基础自查(一)分类记单词——省时高效Ⅰ.阅读单词(知其意)1.fundamentaladj.基本的；基础的2.chainn.链子；连锁；锁链3.dissolvevt.&vi.溶解；解散4.acidn.酸5.multiplyvi.&vt.乘；增加6.gravityn.万有引力；重力7.extinctadj.灭绝的；绝种的8.exhaustvt.用尽；耗尽；使精疲力尽9.satelliten.卫星；人造卫星10.spaceshipn.宇宙飞船Ⅱ.重点单词(写其形)1.atmospheren．大气层；气氛2.solaradj.太阳的；日光的3.thusadv.因此；于是4.gentleadj.温和的；文雅的5.climaten.气候6.crashvi.&vt.碰撞；坠落7.pulln．&vt.拉(力)；拖；牵引力8.floatvi.&vt.(使)浮动；(使)漂浮n.漂浮物9.systemn.系统；体系；制度10.theoryn.学说；理论11.physicistn.物理学家Ⅲ.拓展单词(通其变)1.globen．球体；地球仪；地球→globaladj.全球性的；全世界的2.violentadj.猛烈的；激烈的；强暴的→violencen．暴力→violentlyadv.暴力地；猛烈地3.unlikeprep.与……不同；不像→likevt.喜欢prep.像n.爱好→dislikevt.不喜欢；讨厌n.不喜欢的事物→likelyadj.可能的4.harmfuladj.有害的→harmn．&vt.伤害→harmlessadj.无害的5.existvi.存在；生存→existencen．存在；生存6.puzzlevt.&vi.(使)迷惑；(使)为难n.谜；难题→puzzledadj.感到困惑的→puzzlingadj.令人困惑的7.religionn．宗教；宗教信仰→religiousadj.宗教上的；信奉宗教的；虔诚的8.biologyn．生物学→biologistn．生[语境活用]1.Somebelieveintheexistence(exist)oflifeonMars,whileothersconsideritasamyth.2.Lastnightwehadadiscussion,whichbecamemoreandmoreviolent.Finallywereachedanagreementthatwewillneveruseviolencewhateverhappens.(violent)3.Playingcomputergameswillnotonlydoharmtoyourphysicalhealth,butitisalsoharmfultoyourmentalhealth.Sothereisnoharminadvisingyoutogiveitup.(harm)4.Heoftensaysthathedoesn'tbelieveinanyreligionbutmeanwhileherespectsothers'religiousfreedom.(religion)5.Sincemyyoungerbrotherisfondofbiology,_heisdeterminedtobecomeabiologistwhenhegrowsup.(biology)．6.Asisknowntous,everyonehashis物学家→biologicaladj.生物的9.reactionn．反应；回应→reactv．反应likesanddislikes.Mylittlesisterisfondofpopmusic.Sheislikelytobecomeafamouspopsingerinthefuture.(like)(二)练中记短语——记牢用活写准记牢语境活用(选用左栏短语填空)1.in_time及时；终于2.lay_eggs下蛋3.give_birth_to产生；分娩4.in_one's_turn轮到某人5.watch_out__for密切注意；当心；提防6.cheer__up感到高兴；感到振奋7.depend_on依靠；取决于8.break_out突发；爆发9.prevent_...from阻止；制止10.block_out挡住(光线)11.get_the_hang_of熟悉；掌握；理解12.now_that既然1.Oncehehasmadeuphismind,noonecanpreventhimfromcarryingouttheplan.2.Atlastthefirefightersputoutthefireinthesupermarket,whichbroke_outattenthismorning.3.Shemarriedat17andgave_birth_toherfirstbabyshortlyafter.4.Mr.Brownintendedtocatchtheearlytrain,buthedidn'tgetupin_time.5.Doremembertowatch_out_forcarswhilecrossingthestreet.6.You'vemademesufferinthepast,sonowyou,in_your_turn,_sufferagain！7.Onlybypractisingtimeandtimeagaincanyouget_the_hang_ofthegrammarrules.8.Sheboughtaheavycurtaintoblock_outthelight.(三)仿写明句式——以用为本教材原句句式解读句式仿写1.Thisproducedachainreaction,whichmadeitpossibleforlifetodevelop.这就产生了连锁反应，使生命的发展成为可能。动词＋it＋adj./n.(宾补)＋todo。(2018·全国卷Ⅰ书面表达)我认为参加晚宴时带点小礼物是个好主意。Ithinkit_a_good_idea_to_bringasmallgiftwhenweattendadinnerparty.2.ButwhenItriedtostepforward,IfoundIwascarriedtwiceasfarasontheearthandfellover.但当我试着向前迈步的时候，我发觉我被送出去很远，步子的跨度竟是在地球上的两倍远，因而我摔倒了。倍数表达法：倍数＋as....
