九年级英语下册 unit 1 life on mars grammar教案 牛津版

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1、LifeonMarsGrammarTeachingaims:Masterconversionbetweensimplesentenceandcomplexsentence.Teachingprocedures:Step1Presentsomenewwords.awareadj.知道，意识到e.g.AreyouawarehowfarMarsisawayfromthesun?circlevt.围绕，将一圈起来e.g.IttakesMarsabouttwoEarthyearstocirclearoundtheSunonce.agreementn.一致，同意e.

2、g.ArescientistsinagreementthatlivingonMarswouldbepossibleforhumansinthefuture?distancen.距离，远处e.g.AreyouawareofthedistancebetweenMarsandthesun?possibilityn.可能性e.g.DoscientistsagreeaboutthepossibilityoflivingonMars?Step2Explanation简单句和复合句的转换我们可以用介词短语把状语从句转换成简单句，我们可以用介词把宾语从句和定语从句转换成

3、简单句AUsingadverbialclausesorsimplesentencesWecanrewritesomeadverbialclausesinsimplesentenceswithattheageof,becauseofandwithout.转换时要注意时态和意思的一致性和准确性。NeilArmstrongreceivedhisstudentpilot’slicenceWhenhewas16.NeilArmstrongreceivedhisstudentpilot’slicenceattheageof16.Peoplemightfloatins

4、pacebecausethegravityisslow.Peoplemightfloatinspacebecauseofthelowgravity.Humanscannotsurviveifthereisnofood,wateroroxygen.Humanscannotsurvivewithoutfood,wateroroxygen.Exercises1Danieliswritingaboutvisitinganotherplanet.Helphimrewritethesentencesusingthewordsinbrackets.1.NeilArms

5、trongtookhisfirstflightwhenhewasonlysix.(attheageof)2.YuriGagarinbecamethefirstmantogointoouterspaceattheageof30.(when)3.Peoplemightmovetoanotherplanetinthefuturebecausethepopulationontheearthisincreasingrapidly.(becauseof)4.Ifthereisnofreshfood,mealswillnotbeastastyastheyareonth

6、eearth.(without)5.ItwouldbefunnytoplayfootballonMarsbecauseofthelowgravity.(because)6.Withoutspecialboots,youcannotwalkonMars.(if…not)Keys:1.NeilArmstrongtookhisfirstflightattheageofsix.2.YuriGagarinbecamethefirstmantogointoouterspacewhenhewas30.3.Peoplemightmovetoanotherplanetin

7、thefuturebecauseoftheincreasingrapidlypopulation.4.Mealswillnotbeastastyastheyareontheearthwithoutfreshfood.5.ItwouldbefunnytoplayfootballonMarsbecausethegravityislow.6.Ifyoudon’thavespecialboots,youcannotwalkonMars.Exercises2把下面的复合句改成简单句1.Helearnttoswimwhenhewaseightyearsold.2.H

8、ecouldnotgotothepartybecausehehadtoomuch