Unit4LifeonMarsGrammarI.TeachingaimsandlearningobjectivesBytheendofthelesson,studentsshouldbeableto:1.rewritesomeadverbialclausesinsimplesentences;2.rewritesomeobjectclausesinsimplesentences;3.rewritesomedefiningrelativeclausesinsimplesentences;II.Teachingcontents1.Newwordsandphrases:circle,agreement,possibility,stranger,aware,distance,alien,outerspace,astastyas,remindsbthat/ofsth,besurethat/aboutsth,thinair,indoorplaygrounds2.Newstructures:Aretheysureaboutthefastspeedofspacetravel?IttakesMarsabouttwoEarthyearstocirclearoundtheSunonce.III.FocusofthelessonChangecompoundsentencesintosimplesentences.IV.TeachingproceduresAUsingadverbialclausesorsimplesentencesStep1Presentation1.ChangeadverbialclausesoftimewithprepositionalphrasesNeilArmstrongreceivedhisstudentpilot’slicencewhenhewas16.NeilArmstrongreceivedhisstudentpilot’slicenceattheageof16.2.ChangeadverbialclausesofreasonwithprepositionalphrasesPeoplemightfloatinspacebecausethegravityislow.Peoplemightfloatinspacebecauseofthelowgravity.3.Changeadverbialclausesofconditionwithprepositionalphrases.Humanscannotsurviveifthereisnofood,airoroxygen.Humanscannotsurvivewithoutfood,airoroxygen.【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.Youcannotenterthecinemaifyoudon’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.PeoplemightmovetoanotherplanetinthefuturebecauseoftherapidlyincreasingpopulationontheEarth.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.Hegotupearlyinorderto/soastocatchtheearlybus.2.Thishallissolargethatitcanhold2000people.Thishallislargeenoughtohold2000people.【设计意图：利用学生的已有知识进行思维拓展。】BUsingobjectclausesorsimplesentencesStep1Presentation1.ThesmellofthepillsremindsthemthatfoodontheEarthistasty.ThesmellofthepillsremindsthemofthetastyfoodontheEarth.2.Aretheysurethatspacetravelwillbeveryfast?Aretheysureaboutthefastspeedofspacetravel?Wecanchangecompoundsentencesintosimplesentenceswithprepositionslikeofandabout.【设计意图：图片引导，使学生在学习的过程中发展自己的观察力、想象力和思维能力。】Step2PracticeChangethesentencesintosimplesentences.1.AreyoucertainthatTomissatisfiedwiththeplan?AreyoucertainaboutTom’ssatisfactionwiththeplan?2.Idon’tknowwhichoneIcanbuy.Idon’tknowwhichonetobuy.3.IheardshewassinginginEnglish.IheardhersinginginEnglish.4.ThephotosremindmethatIhavetravelledtotheUK.ThephotosremindmeofmytriptotheUK.5.DoyouunderstandwhatIsaid?Doyouunderstandmywords?【设计意图：讲评点拨，思维拓展。】Step3AbouttheplanetMars1.AreyouawareofthedistancebetweenMarsandthesun?2.DoscientistsagreewiththepossibilityoflivingonMarsforhumansinthefuture?3.HavetheythoughtabouttheproblemofthelowgravityonMars?4.AreyouawareofthetransportonMars?5.Iwonderaboutt...
