湖北省大冶市金山店镇车桥初级中学九年级英语《Unit9 Section A》课件 人教新目标版.ppt

unit9whenwasitinvented sectiona fourgreatinventionsinancientchina paper making 造纸术 compass 指南针 printing 印刷术 gunpowder 火药 talkaboutthehistoryofinventions thepassivevoice 被动语态 languagegoals grammarfocus findoutthenewwords invent n v inventor invention calculator n 计算器 themanyallhislife inventor invented inventions whatorderdoyouthinktheywereinvented numberthem 1 5 1 2 3 4 5 1a usebeinvened beforeorafter explanation 年份的读法 两位在一起读 eg 197619002000readthefollowingyears174518251937 nineteenseventy six nineteenhundred twothousand seventeenforty five eighteentwenty five nineteenthirty seven listenandmatchtheinventionswiththedates a b c e 1b whenwas invented ithinkitwasinventedin 1927beld 1976john 1971 1876bell 1c pairwork whowas inventedby itwasinventedby thepassivevoice 被动语态 英语中动词有主动语态和被动语态两种语态 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 在被动语态中动作的执行者有时用by短语表示出来 被动语态的构成 助动词be 及物动词的 过去分词 一般现在时 一般过去时 thepassivevoice 被动语态 主动语态变为被动语态的步骤 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 thepassivevoice 被动语态 主动语态变被动语态的结构图 bellinventedthetelephonein1876 thetelephonewasinventedbybellin1876 主语 谓语动词过去时 宾语 时间状语 主语 谓语动词的过去分词 宾语 时间状语 thepassivevoice 被动语态 主动语态改被动语态 bell invented thetelephone in1876 was by thepassivevoice 被动语态 主动语态改被动语态 students planted trees inspring were by 把下列的句子变为被动语态的句子 1 theyspeakenglishincanada english 2 peopleusedwoodformakingtables wood 3 theworkersmakecomputersintheusa computers 4 lileiwaterstheflowerseverymorning englishisspokenincanada woodwasusedformakingtables computeraremadeintheusa theflowersarewateredbylileieverymorning 5 didlileicleantheclassroonyesterday wastheclassrooncleanedbylileiyesterday wereplanted thebridgewas wasproduced 练习 1 manypeoplespeakenglish 2 theymadecomputersintheu s a 3 peopleusedknivesforcuttingthings 4 didpeopleusemetalformakingmachines 5 theyproducesilkinsuzhouandhangzhou 6 theyspeakenglishincanada 7 theywritebusinesslettersinenglish 8 theygrowriceinsouthchina 9 theyplantmanytreesinnorthchina 10 luxunwrotethisbook 11 theworkersbuiltsomebridges 12 wecanusetheboxasatable 13 weshouldcleantheclassroomeveryday thanksforlistening listenandnumbertheinventionsintheorderyouhearthem 1 2 3 2a listenagainandmatchtheitemsincolumnsa bandc 2b practiceconversationslikethis whenwas invented itwasinventedin whowasitinventedby itwasinventedby what situsedfor it susedfor translatethefollowingphrases 可调整后跟的鞋 shoeswithadjustableheelsbattery opratedslippersheatedicecreamscoopthestyleoftheshoeswhowassthinventedby 电池控制的拖鞋 加热的冰淇淋勺 鞋的样式 谁发明的某物 microwaveoven alarmclock lightbulb 3a whatdoyouthinkisthemosthelpful annoyinginventions helpful n ful adj usefulwonderfulbeautifulhopeful annoying adj 令人恼怒的 物annoyed angry 人 discuss 3b practiceconversationslikethisa whatdoyouthinkisthemosthelpful annoyinginvention b ithinkthemosthelpfulinventionis a whyisthat b well itgives helpspeople doyouthink为插入语 插入语在使用时的基本结构是 特殊疑问词 doyouthink 主语 陈述语气 eg wheredoyouthinkthebookis ithinkthemosthelpfulinventionis i dliketohavea becauseicould it susedfor ialsowanta becauseit 4groupwork crazyinventions usedfordancing usedfordrivingandflying usedforwalkingandsinging usedforlivingandwalking usedfordrivingint