人教版高中英語(yǔ)必修三第四單元課件

ModuleIIIUnit4

Astronomy玉樹二高2014級(jí)高一十四班

.ModuleIIIUnit4

Astronomy玉樹二1I.WarmingupWhat's

the

meaning

oftheword“Astronomy”?

2.Doyouknowthefollowingterms?

star（）

planet（）

thesun/moon/earth（）

solarsystem（）3.Howmanyplanetsareinthesolarsystem?

.I.WarmingupWhat'sthemeanin2I.WarmingupWhat's

the

meaning

oftheword“Astronomy”?

thescienceofstars;2.Doyouknowthefollowingterms?

star（恒星）

planet（行星）

thesun/moon/earth（

太陽(yáng)、月亮、地球）

solarsystem（太陽(yáng)系）3.Howmanyplanetsarethereinthesolarsystem?

8.I.WarmingupWhat'sthemeanin3Scientists

nowthink

Pluto

istoosmalltobecalledaplanet.ScientistsnowthinkPlutois4Thenamesofeightplanets1)

水星

Mercury2)

金星

Venus3)

地球

Earth4)

火星

Mars5)

木星

Jupiter6)

土星

Saturn7)

天王星

Uranus8)

海王星

Neptune.Thenamesofeightplanets1)5海王星Neptune水星Mercury金星Venus地球Earth火星Mars木星Jupiter土星Saturn天王星Uranus.海王星水星金星地球火星木星土星天王星.6Inthisunit,we’lllearnsomethingmorescientific

1.What’sthetitleofthetext?howlifebeganontheearth2.Fromthetitle,wecanpredictthatthetextmaytellustheoriginoflifeontheearth.

Doyouknowsomestoriesaboutit?.Inthisunit,we’lllearnsome7Panguseparatestheskyfromtheearth.Panguseparatestheskyfromt8

Nvwamadehumans.Nvwamadehumans.9Readthepassagequicklyandanswerthequestions

1.Whendidthe“BigBang”happen?2.Whatformwastheearthafterthe“BigBang”?3.Whatmadeuptheearth’satmosphere？4.Howdidwatercomeintobeingontheearth?5.What’sthesignificanceofthepresenceofwaterontheearth?6.Whatwasimportanttothedevelopmentoffish?7.Whatmadepossibletheriseofmammalsontheearth?

8.Whyaremammalsdifferentfromalllifeformsin

thepast?.Readthepassagequicklyanda10

PhrasesandUsefulExpressionscirclearound

繞…轉(zhuǎn)accordingto…

根據(jù)awidelyacceptedtheory

熟知的理論inalldirections

向著四面八方intime

及時(shí)；終于cooldown

冷卻befundamentalto…

對(duì)…關(guān)鍵achainaction

連鎖反應(yīng)…makeitpossiblefor…todo…

使…可能givebirthto…

生育11.prevent…from

阻止…做…12.millionsofyearstocome

未來(lái)的幾百萬(wàn)年.PhrasesandUsefulExpress111.Whendidthe“BigBang”happen?

Ithappenedseveralbillionyearsago.ScanningReadthepassagequicklyandanswerthequestions.1.Whendidthe“BigBang”hap122.Whatformwastheearthafterthe“BigBang”?

Theearthwasstilljustacloudofdust.3.Whatmadeuptheearth’satmosphereaftertheearthexploded?

Carbon,nitrogen,watervapourandothergases..2.Whatformwastheearthaft134.Howdidwatercomeintobeingontheearth?

Astheearthcooleddown

afteritexploded,watercameintobeing..4.Howdidwatercomeintobei145.What’sthesignificanceofthepresenceofwaterontheearth?

Itallowedtheearthtodissolveharmfulgasesandacidsintotheoceansandseas..5.What’sthesignificanceof156.Whatwasimportanttothedevelopmentoffish?

oxygen.7.Whatmadepossibletheriseofmammalsontheearth?

Thedisappearanceofdinosaursmadethepossibletheriseofmammalsontheearth..6.Whatwasimportanttothed168.Whyaremammalsdifferentfromalllifeformsinthepast?

Theygavebirthtoyoungbabyanimalsand

producedmilktofeedthem..8.Whyaremammalsdifferentf17ClosereadingI.Readthepassagecarefullyandmatchthemainideawitheachparagraph..ClosereadingI.Readthepassa18Para.1A.Theformation(形成)oftheearth.

Para.2B.Theimportanceofwaterforlife.

Para.3C.Awidelyacceptedtheoryabout

theformationoftheuniverse.Para.4D.Thearrivalofhumansandtheirimpactontheearth.Para.5E.Thedevelopmentofplantsandanimalsontheearth..Para.1A.Theformati19

True(T)orFalse(F).1.TheearthappearedbeforetheBigBanghappened.2.Theoriginalatmosphereconsistedofnitrogenandoxygen.3.Themaindifferencebetweentheearthandotherplanetsisthatthereiswaterontheearth.4.Lifebeganinwaterandthenonland.FFTT.True(T)orFalse(F)20SummaryWhatdowelearntoday?.SummaryWhatdowele21SummaryHowlifebeganontheearth..SummaryHowlifebega22Puttheorderofdevelopmentoflifeintoatimeline.Usethereadingpassagetohelpyou.1.Insectsandamphibiansappeared.(10)2.Dinosaursappeared.()3.Theearthbecameasolidball.()4.Smallplantsgrewonthewater.(8)5.Reptilesappeared.()6.Plantsbegantogrowondryland.().Puttheorderofdevelopmento237.Theearthwasacloudofdust.()8.Waterappearedontheearth.(1)9.Shellfishandotherfishappeared.()10.Theuniversebeganwitha"BigBang".()11.Cleveranimalswithhandsandfeetappeared.(12)12.Mammalsappeared.()..24discussingWhatshouldwedoforourearth?.discussingWhatshoul25Youcanusethefollowingwordsorphrasestohelpyou:

prevent…from…/harmful

global