优质课教案Unit9Whenwasitinvented?西平县师灵中学陈贺香2010年3月22日Unit9Whenwasitinvented?学习目标:1.学会使用含有被动语态的不同句型结构“When/Wherewasitinvented?”和“Whataretheyusedfor?---Theyareusedfordoingsth..”来谈论各种发明物的历史。2.学习理解被动语态的含义。能够就不同的发明物与他人交流看法,发表自己的见解,并陈述理由。3.了解到更多在世界上有重大意义的发明,并向那些伟大的发明家学习。Stepone:Vocabulary1.基础词汇的掌握。inventheelslipperscoopbulbmicrowaveovensweetsaltycrispysourpotatochipmistakbeverageaccordingancientlegendboilproducepleasantbakeryabacuscenturycamera2.重点短语:beinventedbybeusedforbymistakebeangerywithbeusedtoSteptwo:DaylyspokenEnglish1.---Whenwasthecarinvented?---Itwasinventedin1985.2.---Whenwereelectricslippersinvented?---Theywereinventedlastyear.23.---Whoweretheyinventedby?---TheywereinventedbyJulieThompson.4.---Whataretheyusedfor?---They’reusedforseeinginthedark.Stepthree:TeachingSectionA:1.被动语态谓语动词的语态表示句子的主语和谓语动作之间的关系:1)当句子的主语是谓语动作的执行者时,主、谓之间的关系称为主动语态;2)当句子的主语是谓语动作的承受者时,主、谓之间的关系称为被动语态。例如:IteachEnglish.(主动语态)我教英语。OurEnglishistaughtbyhim.(被动语态)我们的英语是由他教的。HespeaksEnglish.(主动语态)他说英文。Englishisspokeninmanycountriesallovertheworld.(被动语态)世界许多国家都讲英语。在被动语态的句子中,谓语部分的结构是be+p.p.(过去分词)。被动语态的句子有时态的变化,这个变化反映在be动词上。也就是说,把一个句子做成被动语态的句子,只需要写出be动词的所需时态,再加上所给动词的过去分词就行了。当然,这只是指谓语部分而言。我们知道,be动词作为一个独立的谓语动词有自己现在分词(being)和过去分词(been)。那么,下面我们来看看be在各种时态中的变化形式:一般现在时am/is/are一般过去时was/were一般将来时shall/will+be过去完成时had+been现在进行时am/is/are+being3过去进行时was/were+being现在完成时have/has+been过去将来时would/should+be我们可看看下面的实例:Englishisspokeninmanycountriesallovertheworld.(一般现在时)世界上许多国家都讲英文。SomeTVsetsforsaleinthedepartmentstorewerestolenlastnight.那家商场用来出售的部分电视机昨晚被盗。(一般过去时)Hewon'tbeallowed,byhisfather,tomarryLaura.(一般将来时)他父亲不会让他娶劳拉为妻的。Theywouldbesenttothearmywhentheyfinishedthetraining.他们结束训练时将被派往部队。(过去将来时)Theprojectisbeingcarriedout.(现在进行时)这个计划正在执行中。Thecasewasbeinginvestigatedthen.(过去进行时)那时这案子正在调查中。Thisnovelhasbeentranslatedintoseverallanguages.(现在完成时)这本小说已被译成了几种语言。Theysaidthatproductioncostshadbeenreduced.(过去完成时)他们说生产成本已经下降了。Stepfour:Doingexercises一、根据开头字母,补全单词1.Doyouknowwhothecomputerwasi_______by?2.Theseatbeltonaplanearea_______.3.Itwasabigm________toleavemyumbrellaathome.4.Ac______isahundredyears.5.Boys,stopt_____stonestothepoordog.二、单项选择1.Thebridge__________bythefarmersthemselvesin1982.A.builtB.wasbuiltC.buildD.wasbuild42.Allthebookswill_______tothechildrenwholiveinthesmallvillage.A.besentB.sentC.besendD.send3.Keys_______usedfor______thedoors.A.is,openingB.is,openedC.are,openingD.areopened4.Mymothertoldmethatmyhomeworkmust_______ontime.A.finishB.befinishC.befinishedD.finished5.Thepolicefoundthelostcar_______.A.withmistakeB.byaccidentC.bymistakeD.inaccident6.Idon’tlikethiskindofpotatochipsbecausetheyarenot_______.A.crispyB.sweetC.softD.sour7.Theydecided_______attheendofthismonth.A.toleaveB.goingbackC.travelD.notstatout8.It’susedfor_____clearlyinthedark.A.seeingB.seeC.lookingD.look9.When______thecar________?A.did,inventB.was,inventedC.does,inventD.in,invented10.Jack______leave_____histeachercomesback.A.doesn’t,untilB./,untilC.won’t,/D.won’t,until5