学人教版必修三Unit4Astronomythe science of the starsPeriod1Reading and Comprehending课件（17张）.ppt

readingandcomprehending 2019学年度人教版必修三unit4astronomy thescienceofthestarsperiod1 para 1a theformationoftheearth para 2b theimportanceofwaterforlife para 3c awidelyacceptedtheoryabouttheformationoftheuniverse para 4d thearrivalofhumansandtheirimpactontheearth para 5e thedevelopmentofplantsandanimalsontheearth 一 匹配段意 1 c 2 a 3 b 4 e 5 d 二 选择答案根据课文内容选择最佳选项 1 whoknowshowlifebeganontheearthexactly a scientists b astronomers c noone d aliens 外星人 2 whatdoes smallcleveranimals inthelastparagraphreferto a insects b reptiles c dinosaurs d humans c noone d humans 3 theearthwasdifferentfromtheotherplanetsinthat a acloudofdustwasaroundtheearthb comfortableclimateremainedontheearthc waterremainedontheearthd carbonremainedontheearth c waterremainedontheearth 4 theplantsgrewbeforetheanimalsbecausetheyprovide a nutrientsforanimalstoabsorb 吸收 b oxygenforanimalstobreathec necessarytemperatureforanimalstokeepwarmd watervaporforanimals d watervaporforanimals 5 whichofthefollowingstatementsistrue a thedustsettledintoasolidglobebetween4 5and3 6billionyearago b thefirstsmallplantsbegantoappearonthesurfaceoftheland c about2 6millionyearsagosomesmallcleveranimalsappearedandspreadintheocean d dinosaursdiedoutlongbeforehumanbeingsdevelopedontheearth d dinosaursdiedoutlongbeforehumanbeingsdevelopedontheearth 三 文脉梳理根据课文内容完成表格 atoms violent atmosphere presence acids oxygen shellfish amphibians reptiles existed gavebirthto dioxide clever 四 课文复述朗读课文并在下面课文复述中填入适当的词使复述完整 然后大声用自己的语言复述下文 afterthe 1 theearthwasjustacloudof2 whichlaterexploded producingcarbon nitrogen water3 andothergases achainreactionamongthemmadeitpossibleforlifetodevelop thensmallplantsappearedandtheyfilledtheoceansandseaswith4 whichencouragedthelaterdevelopmentofearly5 andallsortsoffish bigbang dust vapor oxygen shellfish whentheplantsgrewintoforests 6 suchasdinosaursappeared afterdinosaursdisappeared 7 becamemoreimportant smallcleveranimalswithhandsand8 appearedand9 allovertheworld buttheyaremakingtheearthtoo10 forlifetoliveon reptiles mammals feet spread hot 五 话题议写讨论下列问题 然后根据要求写一篇主题相关的英语作文 议一议 discussion 1 sincehumanbeingshavebeenontheearththousandsofyears whyistheearthsoimportantforourhumanbeings thereisnodoubtthattheearthisimportanttoushumanbeings itprovidesuswithnaturalresourcesthatweneed sofarwehaven tfoundanyotherplanetwhichisavailableforustoliveon however wedon treallytreasureouronlyhomeandwearefacingseriousproblems 2 whatproblemsorimpactshavecausedbyhumanbeings oneproblemisthegreen houseeffect duetotheeffect theearthisbecomingtoohotforustoliveon anotheroneistheseriouspollutions especiallyairpollutionandwaterpollution fuelconsumptionhashadairpollutedandindustrializationhasmademanyriversandoceansdirtysothatwearefacingthelackoffreshairandwater meanwhile theamountofnaturalresourceswecanuseisdecreasing 3 howcanweprotecttheearthandmakeitabetterplacetoliveon theearthisourhomeandwehavethedutytotakegoodcareofitforourselvesandforourfuturegenerations therefore weshouldmakeeveryefforttosaveresourcesandlimittheimpactofhumanactivitiesontheplanet 写一写 writing 写作内容 1 以约30个词概括课文的主要内容 2 然后 以约120个词就 地球 的主题发表看法 内容包括 1 地球对人类的重要性 2 人类给地球和人类生存造成的负面影响 3 我们应如何爱护地球和保护环境 thispassagemainlytellsustheprocessoftheearthformationandthedevelopmentoflifeontheearth anditalsomentionshumans influenceontheearth thereisnodoubtthattheearthisimportanttoourhumanbeings itprovidesuswithnaturalresourcesthatweneed sofarwehaven tfoundanyotherplanetwhichisavailableforustoliveon however wedon treallytreasureouronlyhomeandwearefacingseriousproblems oneproblemisthegreen houseeffect duetotheeffect theearthisbecomingtoohotforustoliveon anotheroneistheseriouspollutions especiallyairpollutionandwaterpollution fuelconsumptionhashadairpollutedandindustrializationhasmademanyriversandoceansdirtysothatwearefacingthelackoffreshairandwater meanwhile theamountofnaturalresourcesweca