九年级英语Whenwasitinvented课件.ppt

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1、Unit9Whenwasitinvented?公车中学黄春梅Period1calculatorWhat’sthisinEnglish？What’sthisinEnglish？TVWhat’sthisinEnglish?telephoneWhat’sthisinEnglish?carWhat’sthisinEnglish?computerLanguageGoals:Talkaboutthehistoryofinventions.GrammarFocus:Thepassivevoice.1b:listenandmatchtheinventionsandthedates._____1876__

2、___1885_____1927_____1971_____1976daecbThetelephonewasinventedin1876.Thecarwasinventedin1885.Whenwas…invented?Sample3:B:1cPAIRWORKWhenwasthetelephoneinvented?Ithinkitwasinventedin1876.battery-operatedslippersheatedicecreamscoopshoeswithadjustableheels电池供电的拖鞋加热的冰激凌勺可调节后跟的鞋2b:listenagainandmatchthe

3、itemsincolumnsA,BandC.changingthestyleofashoeJulieThompsonheatedicecreamscoopseeinginthedarkJayceCoziarandJamieEllsworthbattery-operatedslippersscoopingreallycoldicecreamChelseaLanmonshoeswithadjustableheelsWhatisitusedfor?Whowasitinventedby?invention3122a:listenandnumbertheinventionsintheorderth

4、atyouhearthem.2cPAIRWORKWhowasit/weretheyinventedby?Itwas/TheywereinventedbyChelseaLanmon.Whataretheyusedfor?Theyareusedforseeinginthedark.PAIRWORKWhataretheyusedfor?Theyareusedforscoopingreallycoldicecream.Whataretheyusedfor?Theyareusedforchangingthestyleoftheshoes.(1)beused for (doing)sth.被用来做…

5、…for表用途。Stones can be used for buildinghouses.(2)be used assth.被作为……用This book can be used as a text book.(3)be used bysb被某人使用English is used by people in manycountries.（4）be used to用作谓语，意为"习惯于"，可用于各种时态。这里to是介词。       *He is used to the cold weather.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

6、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am(is,are)+donewas(were)+done{Thepassivevoice.被动语态被动语态的用法:不知动作执行者时,常用被动语态.eg.Mybikewasstolenyesterday.ThiscarismadeinAmerican.2.不必要说出动作执行者时,常用.eg.Romewasnotbuiltinaday.3.为了突出强调动作的承受者时,常用被动语态.eg.Thousandsofbeach

7、esarepolluted(污染).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.Thepassivevo