人教版高一英语必修3unit4知识点总结

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1、UNIT4Astronomy:thescienceofthestarsWordssolarsystemplanetwidelytheoryglobeviolentproduceatmospherecircleastronomyuniverseatomsexplodecarbonappearsurfaceoriginreligionbilliondustsolidvapornitrogenunlikeobviousfundamentaldissolvereactionshellfishexistrisepuzzlesatellitepresenceextremel

2、ymultipliedinsectamphibiansmammalspreadchemistryshockedpresenceviolentharmfulacidschaindiscoveryclimatephysicistconcernpullamazedlessenincreasesupplydisappearfloatoxygenreptilesthusencouragehugedioxidedevelopmentdinosaursremoveplanetgentlerudedecreasegravitybiologyspeciesforceevidenc

3、eproveextinctspaceshipweightpainfulexhaustingstructuretheorystructureescapefrighteningsituationcrashPhrases:inalldirectionscombinetosettleintointimecooldownfill....withaswellasinone^sturndieoutprevent...fromblockoutlayeggsasaresultofcrashintoremainamysterydependondozensoffallbacktogi

4、vebirthtonolongercheerupstepforwardtwiceasfarasbreakoutfallovernowthatpayattentiontogetthehangofwatchoutbemakeupofbefundamentaltobeginwithinalldirectionsaccordingtowatchoutfor密切注意；当心；提防Grammar:LWhatitwastobecomewasuncertainuntilbetween4・5and3.8billionyearsagowhenthedustsettledintoaso

5、lid.（随后）它变成什么没人知道,知道38-45亿年前，这团尘埃才慢慢地形成一个固体的球状物。betodo1）“将要做某事”指预先安排好的计划或约定2）表示义务、命令、禁止或可能性等，意思接近于should,must,haveto3）表示将来必然要发生的事，意为“注定……”（2010全国高考）ThediscoveryofgoldinAustralialedthousandstobelievethatafortuneA.ismadeB.wouldmakeC.wastobemadeD.hadmade2.Theearthbecomesoviolentthatitwa

6、snotdearwhethertheshapewouldlastornot.地球变得激烈动荡，不知道这个固体形状是否会继续存在下去。句法分析：本句是句型，that引导的结果状语从句屮又包含一个主语从句，其中it是形式主语，whethertheshapewouldlastornot是真正的主语。violentradj.暴力的；强暴的；猛烈的；激烈的拓展：aviolentcrime/behavior暴力犯罪/行为aviolentstorm暴风骤雨doviolent施暴；歪曲（事实）take....byviolence抢夺withviolence强烈地，强有力地；用暴

7、力3・Theywereintimetoproducecarbondioxide,nitrogen,watervaporandothergases,whichweretomaketheearth'satmosphere.最终产生二氧化碳、氮气、水蒸气和其他气体，从而形成了地球的大气层。句法分析：which引导非限制性定语从句，先行词为carbondioxide,nitrogen,watervaporandothergases.intime1）终于；迟早；最后2）及时,来得及（用作此意是,intime后常跟forsth或todosth.）拓展：atnotime任何时

8、间都不atatime每次