天津学大教育信息咨询有限公司九年级英语下册 Unit 4 Life on Mars语法教案 （新版）牛津版-（新版）牛津版初中九年级下册英语教案VIP免费

LifeonMars教学过程一、课堂导入通过讨论让学生回忆所学的三大从句，并指出如何区别这三大从句。知识点1.状语从句与简单句的互换2.宾语从句与简单句的互换3.限制性定语从句与简单句的互换教学目标掌握状语从句、宾语从句、定语从句如何转换为简单句。教学重点状语从句转换为简单句。教学难点限制性定语从句转换为简单句。二、复习预习复习上节课所学重点单词、短语、句型，讲解课后习题。三、知识讲解考点1：状语从句与介词短语引导的简单句的互换1.NeilArmstrongreceivedhisstudentpilot’slicensewhenhewas16.=NeilArmstrongreceivedhisstudentpilot’slicenseattheageof16.注：when引导的时间状语从句可以改成attheageof引导的简单句。2.Peoplemightfloatinspacebecausethegravityislow.=Peoplemightfloatinspacebecauseofthelowgravity.注：because引导的原因状语从句可以改成becauseof引导的简单句。3.Humanscannotsurviveifthereisnofood,wateroroxygen.=Humanscannotsurvivewithoutfood,wateroroxygen.注：if引导的条件状语从句可以改成without引导的简单句。考点2：宾语从句与介词引导的简单句的互换1.ThesmellofthepillsremindsthemthatfoodontheEarthistasty.=ThesmellofthepillsremindsthemofthetastyfoodontheEarth.注：that引导的宾语从句可以改成of引导的简单句。2.Aretheysurethatspacetravelwillbeveryfast?=Aretheysureaboutthefastspeedofspacetravel?注：that引导的宾语从句可以改成about引导的简单句。3.awayfrom...远离，离开。。。Marsisabout142,000,000milesawayfromtheSun.火星距离太阳约142000000英里。4.circlearound围绕/环绕IttakesMarsabouttwoEarthyearstocirclearoundtheSunonce.火星围着太阳转一圈大约要花费两年的时间。5.inagreementthat...同意。。。Weareinagreementonthatpoint.关于那一点，我们的意见一致。6.beawarethat...意识到。。。考点2:限制性定语从句与介词引导的简单句的互换1.Peoplemightliveinhouseswhichhavehugecomfortablerooms.=Peoplemightliveinhouseswithhugecomfortablerooms.注：which引导的定语从句可以改成with引导的简单句。2.OnMarsyoumightseepeoplewhowearspecialboots.=OnMarsyoumightseepeopleinspecialboots.注：who引导的定语从句可以改成in引导的简单句。3.besimilarto与。。。相似4.muchthinnerair更加稀薄的空气5.hearfrom...收到。。。的来信四、例题精析【例题1】【题干】Shedoesn’tknow.DidLucypassthemathsexam?(改为含有宾语从句的复合句)Shedoesn’tknow_____________________themathexam.【答案】ifLucypassed【解析】宾语从句要用陈述句语气，本题要用过去时态。【例题2】【题干】Ifthereisnofreshfood,mealswillnotbeastastyastheyaretoday.(改为简单句)______________________________________________________________.【答案】Mealswillnotbeastastyastheyaretodaywithoutfreshfood.【解析】If引导的条件状语从句可以改成介词引导的简单句，注意介词的选择。【例题3】【题干】AreyouawarehowfarMarsisawayfromtheSun?(改为简单句）______________________________________________________________.【答案】AreyouawareofthedistancebetweenMarsandtheSun.【解析】宾语从句可以改成介词引导的简单句，注意介词的选用要符合固定搭配。【例题4】【题干】HumansarethinkingaboutmovingtoanotherplanetbecausethepollutionontheEarthisveryserious.(改为简单句)______________________________________________________________.【答案】HumansarethinkingaboutmovingtoanotherplanetbecauseoftheEarth’sseriouspollution.【解析】because引导的原因状语从句可以改成becauseof引导的简单句，注意becauseof后接名词短语。课程小结本节课主要学习三大复合从句如何改为介词引导的简单句，注意介词的选择要符合句意及固定搭配。