高一英语人教课标必修3Unit4Astronomy:thescienceofthestarUnit4Astronomy:thescienceofthestar(Reading)learningaims:lLearnhowtousedifferentreadingskillsfordifferentreadingpurposes,(inferring;skimming;detailedreading,andsoon.)lReadthepassageandlearnaboutthedevelopmentoftheearth.Difficultandimportantpoints:lDevelopourreadingability.lLearnthefollowingwordsandphrases:theory;violent;unlike;harmful;mutiply;exist;intime;layeggs;givebirthto;inone’sturn;prevent…from.Reading:HowlifebeganontheearthI.Skimming(略读)Readingstrategy(策略):Gothroughthepassagequicklytogetthemainideaofeachparagraph.Don’tworryaboutthedetailsandnewwords.Skimthepassageandmatchthemainideawitheachparagraph.Para.1Theformation(形成)oftheearthPara.2TheimportanceofwaterforlifePara.3AwidelyacceptedtheoryabouttheformationoftheuniversePara.4ThearrivalofhumansandtheireffectsontheearthPara.5ThedevelopmentofplantsandanimalsontheearthII.Detailedreading(细读)Readingstrategy:Readthepassagecarefullyparagraphbyparagraghandtrytogetmoreinformation.Thenanswerthequestions.Para1&2:theformationoftheuniverseandtheearth1.Abouthowtheuniversebegan,whichtheoryiswidelyaccepted?2.Whatform（形状）wastheearthafterthe“BigBang”?3.Whatmadeuptheearth’satmosphereaftertheearthexploded?4.Inthesentence“Itexplodedloudlywithfireandrock.Theywereintimetoproducecarbon,nitrogen…”here“they”refersto__________.“Intime”means_______.Para3theimportanceofwaterforlifeWhatmadetheearthdifferentfromtheotherplanetsisthat________remainedontheearth.Thesignificance(意义)ofthecontinuedpresenceofwateristhatitallowed________________________.