九年级英语下册 unit 4 life on mars grammar教案 （新版）牛津版

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1、Unit4LifeonMarsGrammarI.TeachingaimsandlearningobjectivesBytheendofthelesson,studentsshouldbeableto:1.rewritesomeadverbialclausesinsimplesentences;2.rewritesomeobjectclausesinsimplesentences;3.rewritesomedefiningrelativeclausesinsimplesentences;II.Teachingcontents1.Newwordsandphrases:c

2、ircle,agreement,possibility,stranger,aware,distance,alien,outerspace,astastyas,remindsbthat/ofsth,besurethat/aboutsth,thinair,indoorplaygrounds2.Newstructures:Aretheysureaboutthefastspeedofspacetravel?IttakesMarsabouttwoEarthyearstocirclearoundtheSunonce.III.FocusofthelessonChangecompo

3、undsentencesintosimplesentences.IV.TeachingproceduresAUsingadverbialclausesorsimplesentencesStep1Presentation1.ChangeadverbialclausesoftimewithprepositionalphrasesNeilArmstrongreceivedhisstudentpilot’slicencewhenhewas16.NeilArmstrongreceivedhisstudentpilot’slicenceattheageof16.2.Change

4、adverbialclausesofreasonwithprepositionalphrasesPeoplemightfloatinspacebecausethegravityislow.Peoplemightfloatinspacebecauseofthelowgravity.3.Changeadverbialclausesofconditionwithprepositionalphrases.Humanscannotsurviveifthereisnofood,airoroxygen.Humanscannotsurvivewithoutfood,airoroxy

5、gen.【设计意图：利用图片提出问题，引出从句，启发学生改写成简单句。】Step2Practice1.IcouldswimwhenIwaseightyearsold.Icouldswimattheageofeight.2.Hewenthomeafterhefinishedhiswork.Hewenthomeafterfinishinghiswork.3.Hewaslateforschoolbecauseitrainedheavily.Hewaslateforschoolbecauseoftheheavyrain.4.Youcannotenterthecinemaif

6、youdon’thaveaticket.Youcannotenterthecinemawithoutaticket.【设计意图：分别举例、归纳，启发学生如何将含有从句的复合句改写成简单句。】Step3Learningaboutouterspace1.NeilArmstrongtookhisfirstflightattheageofsix.2.YuriGagarinbecamethefirstmantogointoouterspacewhenhewas27.3.Peoplemightmovetoanotherplanetinthefuturebecauseofther

7、apidlyincreasingpopulationontheEarth.4.Withoutfreshfood,mealswillnotbeastastyastheyaretoday.5.ItwouldbefunnytoplayfootballonMarsbecausethegravityislow.6.Ifthereisnospecialboots,youcannotwalkonMars.【设计意图：通过操练巩固已学知识，反馈矫正。】Step4Extension1.Hegotupearlysothathecouldcatchtheearlybus.Hegotu