2014九年级Unit-6whenwasitinvented课件SectionA4a-4c.ppt

Unit9Whenwasitinvented?,Period5SectionA4a-4c,Review,Whenwasinvented?ItwasinventedinWhatisitusedfor?Itisusedfor,最糟糕的发明,“二十世纪最糟糕的发明是什么?”就是人们每天大量使用的塑料袋。诞生于上个世纪三十年代的塑料袋，其家族包括用塑料制成的快餐饭盒、包装纸、餐用杯盘、饮料瓶、酸奶杯、雪糕杯等等。这些废弃物形成的垃圾，数量多、体积大、重量轻、不降解，给治理工作带来很多技术难题和社会问题。比如，散落在田间、路边及草丛中的塑料餐盒，一旦被牲畜吞食，就会危及健康甚至导致死亡。填埋废弃塑料袋、塑料餐盒的土地，不能生长庄稼和树木，造成土地板结，而焚烧处理这些塑料垃圾，则会释放出多种化学有毒气体，其中一种称为二噁英的化合物，毒性极大。,fridge/frid/n.冰箱,Ithinkafridgeisthemostusefulinventioninmodernworld.,translate/trnsleit/v.翻译,SheistranslatingthewordsintoEnglish.Sheisagoodtranslator.,lock/lk/,/la:k/v.锁上；锁住,Heislockingthecar.Theselocksarestrong.,earthquake/:(r)kweik/n.地震,Dontbeafraidoftheearthquake.,biscuit/biskit/n.饼干,Donteattoomuchbiscuit,itisntgoodforyourhealth.,cookie/kuki/n.曲奇饼干,Donteatsomuchcookie,becauseitistoosweet.,instrument/instrumnt/n.器械；仪器；工具,Therearemanykindsofinstrumentsinourschool.,Newwords,fridge/frid/n.冰箱translate/trnsleit/v.翻译lock/lk/,/la:k/v.锁上；锁住earthquake/:(r)kweik/n.地震,sudden/sdn/adj.突然（的）allofasudden突然;猛地biscuit/biskit/n.饼干cookie/kuki/n.曲奇饼干instrument/instrumnt/n.器械；仪器；工具,根据汉语提示完成单词。,1.Theboylosthisparentsduringthelastyears(地震).2.Thestudentswereaskedto(翻译)thestoryintoEnglish.3.Thepolicefoundthelostboyunderthedestroyedhousethroughan(仪器)。,earthquake,translate,instrument,4.Ionlyhavesome(饼干)andaglassofmilkeverymorning.5.Ifyoucanteatallthesefruit,youmayputsomeintoyour(冰箱).,biscuits,fridge,GrammarFocus,Grammar,Thepassivevoice被动语态语态是表示主语与谓语的关系的。如果主语是动作的执行者，动词要用主动语态；反之，如果主语是动作的承受者，动词就要使用被动语态。被动语态谓语部分结构为助动词be+过去分词。,一般过去时态的被动形式,注意：这里be的形式决定了被动语态的时态，其后的过去分词没有变化。,肯定句主语+waswere+过去分词+(by)否定句主语+waswerenot+过去分词+(by)一般疑问句waswere+主语+过去分词+(by)?特殊疑问句疑问词+waswere+主语+过去分词+(by)?,S+was/were+done,S+was/were+not+done,Was/Were+S+done?,Mariaboughtthebooklastyear.(主动句)ThebookwasboughtbyMarialastyear.WhenwasthebookboughtbyMaria?WhatwasboughtbyMarialastyear?,被动句：,让我们看一看各种句型的主动语态变为被动语态时，到底发生了什么变化？,Quiz,把下列句子改为被动语态。1.TheymadethesecomputersinShenzhen.Thesecomputers_inShenzhen.2.Sheboughtanewbikeyesterday.Anewbike_byheryesterday.,weremade,wasbought,中考真题链接,1.IfeelveryhappythatI_tobethehost.Congratulations!(07江西)A.chooseB.amchosenC.waschosenD.havenchosen2.TodayChinese_bymoreandmorepeoplearoundtheworld.(07北京)A.wasspokenB.isspokenC.spokeD.speak,3(课改实验区考生做)(07重庆)YourhometownhaschangedalotYes.Takealookatthesetallbuildings.They_lastyearA.buildBbuiltC.wasbuiltDwerebuilt(非课改实验区考生做)Whyistheclassroomsodirty?Sorry,sir.It_yesterdayWeforgottodoitA.dontcleanB.didntcleanC.werentcleanedD.wasntcleaned,再次阅读翻译语法句子,Whenwasthezipperinvented?Whowasitinventedby?WhenwasteabroughttoKorea?Whatisthehotice-creamscoopusedfor?Itwasinventedin1893.ItwasinventedbyWhitcombJudson.ItwasbroughttoKoreaduringthe6thand7thcenturies.Itsusedforservingreallycoldice-cream.,4aRewritethesentencesusingthepassivevoice.,1.Theysoldthefridgeatalowprice.Thefridgewassoldatalowprice.,2.Somebodystolemycamerafrommyhotelroom.3.Wheredidyoutakethesephotos?,Mycamerawasstolenbysomebodyfrommyhotelroom.,Wherewerethesephotostakenbyyou?,4.Ourparentsadvisedusnottogooutalone.5.Differentwriterstranslatedthebookintodifferentlanguages.,Wewereadvisednottogooutalonebyourparents.,Thebookwastranslatedintodifferentlanguagesbydifferentwriters.,4bCompletethesentenceswiththecorrectformsoftheverbsinthebox.,1.Youtothepartylastnight,werentyou?Whydidntyougo?2.Theearthquakeallofasudden,butluckilythevillagerstoasafeplace.,wereinvited,came,werebrought,3.Thedoorwhenwearrived,sowethebell.4.Thestudentsnottoeatordrinkinclass.ButRubytherulewhenshestartedeatingabiscuitinscienceclass.5.Thecookiesbythehungrykidsinlessthan20minutes.Thentheyformore!,waslocked,rang,weretold,broke,wereeaten,asked,4cDecidewhetheractiveorpassiveformsshouldbeusedinthesesentences.Writethecorrectformsintheblanks,Thetelephone(invent)byAlexanderGrahamBell.He(born)in1847.Alexander(work)ontheinventionofthetelephonewithThomasWatson.In1875,Alexander(learn)tosendmusicalnotesthroughaninstrumentsimilartoatelephone.,wasinvented,wasborn,worked,learnedlearnt,Finally,thetelephone(invent)in1876.Thefirstsentencethat(say)onthetelephonebyAlexanderwas“Mr.Watson,comehere;Iwanttoseeyou.”Todaythetelephone(use)aroundtheworld.,wasinvented,wassaid,isused,Summaries,1.atalowprice以一个很低的价格2.takethesephotos拍这些照片3.gooutalone单独外出4.translatethebookintodifferentlanguage把书翻译成不同种类的语言5.allofsudden突然6.workon从事，进行,用所给词的适当形式填空。,1.Thisinstrumentisusedfor(play)musicinclass.2.Howmanymagazines(