astronomy the science of the stars教案1

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1、Unit4Astronomy:thescienceofthestarsTeachinggoals教学目标1Targetlanguage目标语言a重点词汇和短语suffer,settle,realize,worryabout,havegotto,tieupb重点句子：Hewasverydisappointed.Whatitwastobecomewasamystery.Tosavemoney,youmustuseasfewwordsaspossible.c.PractisetalkingaboutproblemsinstudyorlifeMyproble

2、mis…Thedifficultyis…Mytroubleis…Thequestionis…Myadviceis…WhatIthinkaboutitis…Thefactis…Mysuggestionis…2Abilitygoals能力目标LearntouseNounClausesasthesubject..3Learningabilitygoals学能目标LetSslearnhowtouseNounClausesasthesubjectTeachingimportantpoints教学重点theuseofNounClausesasthesubject

3、Teachingdifficultpoints教学难点HowtoteachtheSstolearntouseNounClausesasthesubjectTeachingmethods教学方法LearngrammarthroughpracticeTeachingaids教具准备AprojectorAblackboardTeachingprocedures&ways教学过程与方式StepIRevision1.Checkretellingofthepassage.Theexplosionoftheearthproducedwatervapor,which

4、turnedintowaterwhentheearthcooleddown.Waterallowedtheearthtodissolveharmfulgasesintotheoceansandseas.Thatmadeitpossibleforlifetobegintodevelop.Thearrivalofsmallplantsencouragedthedevelopmentofearlyshellfishandallsortsoffish.Manymillionsofyearslaterthefirstgreenplantsbegantoappe

5、aronland.Laterlandanimalsappeared.Somewereinsects.Others,calledamphibians,wereabletoliveonlandaswellasinthesea.Whentheplantsgrewintoforests,reptilesappearedforthefirsttime.Later,dinosaursdeveloped.Theybecamethemostimportantanimalsontheearthformillionsofyears.Aftertheydisappeare

6、d,mammalsbecamemoreimportant.Theywerethelastgroupofanimalsandtheyweredifferentbecausetheyproducedtheiryoungfromwithintheirbodies.Smallcleveranimals,withhandsandfeet,appearedandspreadallovertheearth.Astimewentby,theycoveredtheearthandhavebecomethemostimportantanimalsontheplanet.

7、1.Translatethefollowingsentences.1.你迟早会成功的。2.我的车与你的不一样。3.站在门旁边的那个人是谁？4.他总是第一个来，最后一个离开。5.既然你已经长大了，你自己决定吧。Suggestedanswers:1.You’llsucceedintime.2.Mycarisdifferentfromyours.3.Whoisthepersonstandingbythedoor?4.He’salwaysthefirsttocomeandthelasttoleave.5.Nowthatyouhavegrownupyoucan

8、decideityourself.StepIIWordstudyThispartisaconsolidati