九级英语 Unit9 When was it invented Section A 学案 人教新目标版.doc

Unit9Whenwasitinvented?SectionA主动语态与被动语态：英语动词有两种语态即主动语态(TheActiveVoice)与被动语态（ThePassiveVoice)。主动语态表示主语是动作的执行者/被动语态表示主语是动作的承受者e.g.1.TheymaketrainsinZhuzhou.主动语态TrainsaremadeinZhuzhou.被动语态2.Thefarmersgrowcottoneveryyear.主动语态Cottonisgrownbythefarmerseveryyear.被动语态一：被动语态的构成:助动词be+(及物动词的)过去分词am(isare)+done一般现在时was(were)+done一般过去时二:主动语态变为被动语态的步骤:1.把原主动句中的宾语转换为被动语态的主语.2.把动词改为被动形式即“be+过去分词”.注意be动词要按新的主语的人称和数进行变化时态要和原来的主动语态的时态保持一致.3.原来主动语态句中的主语如果需要就放在by后面以它的宾格形式出现.如果没有必要就可以省略.其他的成分(定语状语)不变句式也不能变.主动语态变被动语态的结构图:Bellinventedthetelephonein1876.主语谓语动词过去时宾语时间状语ThetelephonewasinventedbyBellin1876主语谓语动词的过去分词宾语时间状语三：被动语态的特殊用法:（一）：双宾语buy/makesbsth=buy/makesthforsbgivesbsth=givesthtosb1.Myfatherboughtmeacomputer.Acomputerwasboughtformebymyfather.Iwasboughtacomputerbymyfather.2.Hegivesmeabook.Abookisgiventomebyhim.三让let.have.make四看watch.see.lookat.noticeeg.Weoftenseehimplaybasketball.Heisoftenseentoplaybasketballbyus.（三）、注意动词短语的完整性Thebabyistakengoodcareofbythenurse（四）、无被动语态的动词。takeplacehappencomeoutcometruediebelongto课堂练习;一：用所给的词的适当形式填空。1.Whatdoyouthinkisthemost___________(help)invention?2.Edisonwasagreat________(invent).Hehad1093_______(invent)inhislife.3.Lightareusedfor__________(see)thingsinthedark.4.Personalcomputers___________(invent)in1976.5.Whichlanguage________themostwidely_________(speak)intheworld?6.Whenwasthec_________invented?7.Pleaseputtheusedb____________intothebox.8.Herearetheshoeswitha___________heels.二：用所给动词的正确形式填空：1)Thebike__________(fix)upbyXiaoMingyesterday.2)Sunglasses__________(use)forprotectingpeople’seyes.3)Apicture_________(put)upontheblackboard.4)French___________(speak)inFrance.5)Teenagersshould_________(allow)tochoosetheirownclothes