江苏启东市教研中心九年级英语下册Unit1Period6教案+学案+配套练习牛津版Teachingaims：1.Tograsptheusageofobjectclausesintroducedby“if”or“whether”Teachingkey&difficultpoints:1.Tocomparetheusageofobjectclausesintroducedby“if”withtheusageofadverbialclausesintroducedby“if”2.Tenseofobjectclausesintroducedby“if”or“whether”Teachingaids:Blackboardandtestpaper.Teachingsteps:StepOne.Freetalkandcheckthepreparationout把下列短语译成英语1.产生足够的水__________________2.在火星上植树_______________________3.火星上的交通__________________4.在地球上（2种）__________________5.确信（2种）___________________6.对于早期移居到火星上的人来说__________________________________7.从地球到火星________________8.搬至火星______________________9.发送一个太空机器人到火星__________________________________10.生活在火星这颗行星上_________________11.在将来_______________________12.努力使这个梦想成真___________________13.去火星的旅途________________________________14.愿意搬到火星上__________________________1.Workingroupsoffourtocheckthephrases.(四人小组核对答案，教师巡视帮忙)2.LettheSsasksomequestions.3.Solvetheproblemstogether.4.Askthestudentstoreadthemoutandpayattentiontothepronuciations..StepTwo.Presentation.1.ToasktheSstoreadthegrammarrulesonPage15.Iftheyhaveanyquestions,theycanasktheteacher.2.TotelltheSsthatwecanuse“if”or“whether”tointroduceanobjectclausewhenitexpressa“YesorNo”question.Inthatclause,weoftenusethesamewordorderasinastatement.StepThreePractice1.ToexplainPartC1totheSs.Danielisnowwritinghisquestionstothewebsiteeditor.HeisaskingsomequestionsaboutlifeonMars.Hewantstoknowmoreaboutlifethere.AndasktheSstohelprewritethesentencesbyusing“if”or“whether”tomakeobjectclausesbythemseleves.2.Tochecktheanswers.ToaskfivestudentstoreadtheiranswersonebyoneandtheotherSstochecktheirownaswerscarefully.3.ToexplainPartC2totheSs.DanieliswritinginhisdiaryaboutwhathehasfoundaboutlivingonMars.Andaskthemtocompletehisdiarye.TodividetheSstointogroupsoffourandtoseewhichgroupwillfinishthediaryfastest.4.Tochecktheanswers.Toaskthefastestgrouptoreadouttheiranswersandtheotherstudentstochecktheirownanswers.Iftheyhaveanyquestions,theycanputuptheirhandsandstatetheiropinions.StepFour.Explantiontothegrammar1.Whenanobjectclauseexpressesa“YesorNo”question.Wecanuse“if”or“whether”tojointhesentence.Theconjactions“if”and“whether”canbeusedinsteadofeachother.However“whether”canbeusedwith“ornot”,while“if”cann’tbeusedwith“ornot”.Afterapreposition,wecanonlyuse“whether”.Inthatclause,weoftenusethesamewordorderasinastatement.Idon’tknow__________(if,whether)hewillcometomorrow.Theteacherasked________(if,whether)wehadfinishedtheexperiment.Everythingdependson________(if,whether)wehaveenoughmoney。Idon’tknow_________(if,whether)themoviestarwillcomeornot.2.Thetenseoftheobjectclausedependsonthetenseofthemainclause.Ifthetenseofthemainclauseispresent,wecanuseanytenseaccordingtotherequireoftheobjectclause.Ifthetenseofthemainclauseispast,weshoulduseoneofthepasttensesaccordingtotherequireoftheobjectclauses.Iftheobjectclauseistherulesofnatureorthetruth,weneedn’tchangethetenseoftheobjectclauseNobodyknewwhetherhe_______(can)passtheexamTheteachersaidthattheearth________(go)roundthesun.HetoldmethatJapan_______(be)anislandcountry.Couldyoutellmewhenwe________(visit)theHistoryMuseum?3Tocomparetheusageofobjectclausesintroduce...
