人教课标高一必修3Unit4Unit4ReadingI1.However,accordingtoawidelyacceptedtheory,theuniversebeganwitha“BigBang”thatthrewmatterinalldirections.tobeginwith和tostartwith：两个词组都有“以……开始”的意思.1)tobeginwith以……为起点;开始(做)……2)tostartwith以…….开始;从……着手;由……作为开头这两个词组都可以单独使用,表示“首先;第一;起初;最初”.在句中作时间状语.e.g.Tobegin/startwith,Icouldn’tunderstandeveryword.起初,我一句也没弄明白.2.Whatitwastobecomewasuncertainuntilbetween4.5and3.8billionyearsagowhenthedustsettledintoasolidglobe.1.________________________（使大家吃惊的是）isthathedidn’tcometothemeeting.Whatsurprisedeverybody2.____________（他所做的）addedtoourdifficulty.Whathedid_____wecan’tgetseemsbetterthan____wehave.A.What;whatB.What;thatC.That;thatD.That;what_____madetheschoolproudwas_____morethan90%ofthestudentshadbeenadmittedtokeyuniversities.A.What;becauseB.What;that;C.That;whatD.That;becauseAB3.Theearthbecamesoviolentthatitwasnotclearwhetherthesolidshapewouldlastornot.问题是地球开始变得激烈动荡，不知道这个固体形状是否会继续下去。n.固体solid,liquid,gasadj.固体的；实心的,无空隙的；结实的，坚固的solidfuelssolidfoodasolidspheresolidfurnitureamanofsolidbuild1)Matterhasthreestates:solid,liquidandgas.2)Whenwaterfreezes,itbecomessolidandwecallitice.4.Itexplodedloudlywithfireandrock.1).（使某物）炸开，爆炸2).（指感情）激发3).（指人口）突然或迅速增加Thefireworkexplodedinhishandandhewashurtseriously.Iwasfrightenedwhensheexplodedintoloudlaughter.Nowitisnoteasytofindjobswiththeexplodingpopulation.explosionn.爆炸（声）explosiveadj.爆炸性的，易爆炸的n.炸药，爆炸物5.Theywere5.Theywereintimeintimetoproducetoproducecarboncarbon,,nitrogen,watervapourandothergasesnitrogen,watervapourandothergasesintime(forsth/todosth):intime(forsth/todosth):notlate及时；不迟Shewillbebackintimetopreparedinner.她来得及回来准备晚饭。intimeintime:soonerorlater;eventually迟早；最后I’llseehimintime.总有一天我会遇见他。in/outoftime:in/notinthecorrecttime合/不合节拍Theaudienceclappedintimetothemusic.观众合着音乐的节拍拍手。6.Whatisevenmoreimportantisthatastheearthcooleddown,waterbegantoappearonitssurface.随着地球的冷却,地球的表面就开始出现了水。cooladj.凉快；冷静；冷淡v.（使）变冷；冷静下来1)Let’ssitintheshadeandgetcool.2)IknewIhadtokeepcool.3)Hisplayreceivedacoolresponsefromthepublic.4)Therainhascooledtheair.5)Letyoursoupcoolalittlebeforeyoudrinkit.6)Aheatedargumentcanbesettledbetterifbothsidescooldownfirst.7)Itriedtocoolherdownbutshewasstillveryangrywhensheleft.7.Itwasnotimmediatelyobviousthatwaterwastobefundamentaltothedevelopmentoflife.水会对于生命的发展起关键作用,这一点在当时并不太明显.本句体现的是名词性从句在句中作主语的作用,虽然是以It开头,可是It只起到形式主语的作用,真正的主语是thatwaterwastobefundamentaltothedevelopmentoflife.用It做形式主语是因为that引导的从句较长,如果按照正常语序来安排的话就显得头重脚轻了.如:Itisnowonderthathehaspassedtheexam.8.Whatmanyscientistsbelieveisthatthecontinuedpresenceofwaterallowedtheearthtodissolveharmfulgasesandacidsintotheoceansandseas.allowvt.允许、许可、容许allow+n./pron./doingallowsb.todobeallowedtodoMyfatherdoesn’tallowsmokingathome.Infacthedoesn’tallowustosmokeanywhereatanytime.父亲不允许在家里吸烟。实际上，他不允许我们在任何地方任何时候吸烟。Areweallowedtousethecomputer?我们可以用电脑么？beharmfulto对…有害doharmtosb.=dosb.harm伤害某人，对某人有害处1)Polluti...
