Unit4Astronomy:thescienceofthestarsHowlifebeganontheearth科目：英語年級：高一版本：人教版主講教師：工作單位：Unit4Astronomy:thescienceofthestars

HowlifebeganontheearthWeallliveonthesameplanet—Lead-in

theearth1.Doyouwanttoknowtheoriginoflife

ontheearth?

2.

Eachreligionorculturehasits

ownideasabouthowlifebegan

ontheearth.

InChineseculture…____________separates(分)theskyfromtheearth.Pangu盤古_____________mendedtheskyand

madehumanbeings.Nuwa(女媧)Inwesterncountries______________created

theworldandall

livingthings.God(上帝)

Theyarejustsomelegends.

2.Doyouknowwhatascientific

ideais?

1.Aretheytrueorjustsomelegends(傳說)?Doyouknowwhatascientificideais?

TheBigBangPre-readingTheuniversebeganwithaBigBang.While-reading

Readthetitleandlookatthepicturesandpredict（預(yù)測）:

Whatmaythepassagebeabout?

TASK1.PredictingpossibleinformationHowlifebeganontheearthTASK2.

SkimmingforstructureandmainideasWhile-readingWhat’sthepassageabout？

Theorigin/developmentoflifeontheearth.Para.1Para.2Para.3Para.4Para.5

AtheoryabouthowtheuniversewasformedTheformation(形成）oftheearthTheimportanceofwater

forlifeThedevelopmentofplantsandanimalsThearrivalofhumans

andtheireffectsontheearthHowlifebeganontheearthPart1:ThedevelopmentoftheearthPart2:Thedevelopmentoflife.ReadingskillⅠ:（閱讀策略1)如何歸納段意：找段落主題句；找出關(guān)鍵詞，自己歸納。Howisthepassagedeveloped?

A:bytimeB:byspaceC:bycomparison(比較)AScanningforDetailedReadingPart1(1~3):ThedevelopmentoftheearthTask31.Judgewhetherthestatementsaretrueorfalse.

①Atomsbegantoformtocreatestarsandotherbodiesbeforethe“BigBang”.()②Whentheearthcooleddown，waterbegantoappearonitssurface.（）

③Theearthwasdifferentfromtheotherplanets.（）

④Lifecanalsoappearontheearthwithoutwater.（）

⑤Itwaswaterthatallowedtheearthtodissolveharmfulgases.()

FTTFTPart2(4~5)ThedevelopmentoflifeReadPart2(Para.4-Para.5)

2.Choosethebestanswer⑴Whywasitnecessaryforplantstogrowbeforeanimals?A.Animalsneededplantstoprotectthemfromthesun.B.Plantsprovidedoxygenforanimalstobreathe.C.Animalscouldhidefromhuntersinforest.D.Itwaseasierforplantstogrow.Whyisitwrongtoshowfilmswithdinosaursandpeopletogether?A.Becausedinosaursdiedoutlongbeforehumanbeingsdevelopedontheearth.B.BecausedinosaursdiedoutlongafterhumanbeingsdevelopedontheearthC.Because

dinosaursarefierce(兇猛的)whilehumanbeingsaren’t.(3)Whatproblemiscausedbyhumanbeings?ATheyexisteverywhereontheearth.BTheycauseglobalwarming.CTheyfindnewmethodsofgrowingcrops.DTheyenjoyhuntingandfishing.(4)Inthesentence“Thustheyhave,intheirturn,becomethemostimportantanimals

ontheplanet(paragraph5)”

Whatdoestheyreferto?A.AllsortsoffishB.ReptilesC.MammalsD.SomesmallcleveranimalsReadingskillⅡ：(閱讀策略2)如何解決代詞指代問題首先明確代詞指代的是名詞；然后結(jié)合句意去代詞前面的句子中尋找相應(yīng)的名詞。

Task4ListeningandRetelling.

Listentoavideomaterialandthenretelltheprocess(過程)ofdevelopmentoflife.Howlifebeganontheearth-by黃曉婷_標(biāo)清.flvPuttheorderofdevelopmentoflifeintoatimeline.

()1.Insectsandamphibiansappeared.()2.Dinosaursappeared.()3.Theearthbecameasolidball.()4.Smallplantsgrewonthewater.()5.Reptilesappeared.()6.Plantsbegantogrowondryland.()7.Theearthwasacloudofdust.()8.Waterappearedontheearth.()9.Shellfishandotherfishappeared.()10.Theuniversebeganwitha“BigBang”.()11.Cleveranimalswithhandsandfeetappeared.()12.Mammalsappeared.176542312119810Retellthedevelopmentoflife

Theuniversebeganwitha“BigBang”,Forseveralbillionyearsafterthe“BigBang”,theearthwasstilljustacloudofdust……Post—reading:Discussion＆Speaking

1.Whatproblemshavebeencausedbyhumanstotheearth?

Post—reading:Discussion＆Speaking2.whatcanwestudentsdotoprotecttheearthandmakeitabetterplacetoliveon?Whynotmakeaposter?Summary

Whatwehavelearned?

1.Someusefulwordsandphrases.2.Thedevelopment/originoflifeontheearth3.Someread