最新Unit4+Astronomy课件课件ppt.ppt

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1、Unit4+Astronomy课件PanguseparatestheskyfromtheearthPanGuPara1Para2Para3Para4Para5AwidelyacceptedtheoryabouttheformationoftheuniverseTheformationoftheearthTheimportanceofwaterforlifeThedevelopmentofplantsandanimalsontheearthThearrivalofhumansandtheirimpactontheearthP

2、art1ThedevelopmentoftheearthPart2ThedevelopmentofthelifeMainbodyAfterthe“BigBang”,whatwastheearthlike?3.Whywastheearthdifferentfromotherplanets?A.Itproducedmuchheat.B.Thewaterremained.C.Waterdisappeared.D.Itwastheoldestplanet.2.Whatappearedwhentheearthcooleddown?D

3、etailedreadingPart1(Para.1-3)1.AftertheBigBang,whatwastheearthlike?DetailedreadingacloudofdustasolidglobePart1(Para.1-3)water2.Whatappearedwhentheearthcooleddown?3.Whywastheearthdifferentfromotherplanets?A.Itproducedmuchheat.B.Thewaterremained.C.Waterdisappeared.D

4、.Itwastheoldestplanet.中国渴了2________1smallplantsinwater3greenplantsonland4____________5____________6forests7_________8_________9_________2shellfishandallsortsoffish4insects(onland)5amphibians(onlandandinwater)7reptiles(onland)8dinosaurs(onland)9mammals(onland)lifep

5、lantsanimalsPart2:(Para.4-5)reptilesamphibiansandinsectsdinosaursmammalsManhadevolved(进化）fromapes（猿）.waterlandcomplexsimpleFromthepicturesabove,wecanknowlifechangesfrom…to…fewkindsawidevarietyadvancedlowAfterthe“bigbang”,theearthwasstilljustacloudof_____.Thenit___

6、_____withfireandrock,whichwere_______toproducemanygases.Astheearthcooleddown,_____appeared.Summary:fillintheblanksdustexplodedintimewaterThen__________grew.Theymultipliedandfilledtheoceansandseaswith_______.Manymillionsofyearslaterthefirst____________begantoappear

7、onland.Whentheplantsgrewtoforests,______appearedforthefirsttime.Theyproducedyoungby__________.Whendinosaursdisappeared,__________appeared,whichwereverydifferentfromotherlifeforms.Finally,____________appeared,buttheymaymaketheearthbecome_______toliveon.smallplantso

8、xygengreenreptileslayingeggsmammalsplantstoohothumanbeingsTheearthisill.TalkBar说说吧Asastudent,whatcanwedofortheearth?Onlyifwecarewillwehelp,onlyifwehelps