unit 4 astronomy- the science of the stars

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1、Unit4Astronomy:thescienceofthestars6第二教+育.资>源g网z　　Unit4Astronomy:thescienceofthestars　　grammar　　Teachinggoals　　1Targetlanguage　　a重点词汇和短语　　suffer,settle,realize,worryabout,havegotto,tieup　　b重点句子：　　Hewasverydisappointed.　　Whatitwastobecomewasamystery.　　Tosavemoney,youmustuseasfewwo

2、rdsaspossible.　　c.Practisetalkingaboutproblemsinstudyorlife　　Myproblemis…Thedifficultyis…Mytroubleis…　　Thequestionis…Myadviceis…WhatIthinkaboutitis…　　Thefactis…Mysuggestionis…　　2Abilitygoals　　LearntouseNounClausesasthesubject..　　3Learningabilitygoals　　LetSslearnhowtouseNounClausesa

3、sthesubject　　Teachingimportantpoints　　theuseofNounClausesasthesubject　　Teachingdifficultpoints　　HowtoteachtheSstolearntouseNounClausesasthesubject　　Teachingmethods　　Learngrammarthroughpractice　　Teachingaids　　computer　　Teachingprocedures　　Step1Revision　　1.Checkretellingofthepassage.

4、　　Theexplosionoftheearthproducedwatervapor,whichturnedintowaterwhentheearthcooleddown.Waterallowedtheearthtodissolveharmfulgasesintotheoceansandseas.Thatmadeitpossibleforlifetobegintodevelop.Thearrivalofsmallplantsencouragedthedevelopmentofearlyshellfishandallsortsoffish.Manymillio

5、nsofyearslaterthefirstgreenplantsbegantoappearonland.Laterlandanimalsappeared.Somewereinsects.Others,calledamphibians,wereabletoliveonlandaswellasinthesea.Whentheplantsgrewintoforests,reptilesappearedforthefirsttime.Later,dinosaursdeveloped.Theybecamethemostimportantanimalsontheear

6、thformillionsofyears.Aftertheydisappeared,mammalsbecamemoreimportant.Theywerethelastgroupofanimalsandtheyweredifferentbecausetheyproducedtheiryoungfromwithintheirbodies.Smallcleveranimals,withhandsandfeet,appearedandspreadallovertheearth.Astimewentby,theycoveredtheearthandhavebecom

7、ethemostimportantanimalsontheplanet.　　2.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’salwaysthefirs

8、ttocomeandthelasttoleave.