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时间:2019-01-06
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1、Unit4 AstronomythescienceofthestarsⅠ.重点单词聚焦1.Itcosthimmorethanone________(十亿)dollarstocompletetheproject.答案: billion2.“Whathappened?”John’smotheraskedhimina________(温和的)voice.答案: gentle3.BeforetheEarth’sprotective________(大气层)wasformed,therewasnolifeexceptinthesea.答案: atmosphere4.Withthe________(
2、引力)ofthemoonandthesuneachday,tides(潮汐)rollinandrollaway.答案: pull5.Manmade________(卫星)areusedforsendingandreceivingmessages.答案: satellites6.Smoking________(乘,增加)theriskofheartattacksandotherhealthproblems.答案: multiplies7.Eatingtoomanydessertscanbe________(有害的)toone’steeth.答案: harmful8.Globalwarmin
3、gand________(气候)changeproblemsareperhapsthegreatestthreatstoourplanet.答案: climate9.Accordingtothe________(理论)ofrelativity(相对论),nothingcantravelfasterthanlight.答案: theory10.Mostoftheevidencehadbeendestroyed.________(因此,于是),itwasalmostimpossibletoprovehimguilty.答案: ThusⅡ.重点短语扫描1.prevent...... 阻止
4、……2.eggs 下蛋3.one’sturn 轮到某人;接着4.getthehang 熟悉;掌握;理解5.watch 密切注视;当心;提防6.depend 依靠7.time 及时,终于8.give 产生;分娩9.cheer 感到高兴;感到振奋10.now 既然11.break 突发;爆发fromlayinofoutoninbirthtoupthatoutⅢ.课文原句突破1.随后它会变成什么没有人知道,直到38~45亿年前,这团尘埃才慢慢地形成一个固体的球状物。________________________________________wasun
5、certainuntilbetween4.5and3.8billionyearsagowhenthedustsettledintoasolidglobe.答案: Whatitwastobecome2.地球变得如此猛烈,以至于它的形状能否持久还不清楚。Theearthbecame________violent________itwasnotclearwhethertheshapewouldlastornot.答案: so;that3.这就产生了一系列的反应,使得生命就有可能开始发展了。Thisproducedachainreaction,which_____________________
6、___________________________________.答案: madeitpossibleforlifetodevelop4.而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,因而我摔倒了。ButwhenItriedtostepforward,IfoundIwascarried________________________________ontheearthandfellover.答案: twiceasfaras5.“天哪,”我大声说。“引力改变了,走路也的确需要练一练了。”“Oh,dear,”Icried,“walkingdoesneed
7、abitofpractice________________gravityhaschanged.”答案: nowthatatmospheren.大气层,空气;环境,气氛教材原句P25:Theywereintimetoproducecarbon,nitrogen,watervapourandothergases,whichweretomaketheearth’satmosphere.它们最终产生了碳、氮气、水蒸气和其他气体,这些后来形
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