新目标九年级全册九年级英语unit9SectionB人教新目标版.ppt课件

SectionB,Whatwasitinvented,SectionB,莱溪中学何凤,sour,sweet,sweet,sweet,crispy,salty,Intheend:salty:Fallinto:bymistake:byaccident:accordingto:,咸的,含盐的.名词,salty加y构成形容词,最后,终于.eg.Everythingwillbeallrightintheend.,弄错的,错误地.eg.Hetooktheumbrellabymistake.,偶然,意外,无意中.eg.Imetherbyaccidentinacrowdedbus.,根据,按照eg.Wellbepaidaccordingtotheamountofworkwedo.,落入，陷入,Listenandcircle“T”(fortrue)or“F”(forfalse).,Thepotatochipswereinventedbymistake.Theywereinventedin1863.Thecustomerthoughtthepotatoeswerentthinenough.Thecustomersaidtheywerentsaltyenough.Georgewantedtomakethecustomerhappy.Thecustomerwashappyintheend.,TFTFTFTFTFTF,Thehistoryofchips,thatpotatochipswereinventedbymistake?ChipsbyachefcalledGeorgeCrum.Theywereinventedin.GeorgeCrumcookedthemforalongtimeuntilthey.Andhesprinkledlotsofsaltonthemsotheywere.,Didyouknow,wereinvented,1853,werecrispy,reallysalty,Whoinventedtea?,Didyouknowthattea,themostpopulardrinkintheworld(afterwater),wasinventedbyaccident?AlthoughteawasntbroughttotheWesternworlduntil1610,thisbeveragewasdiscoveredoverthreethousandyearsbeforethat.AccordingtoanAncientChineselegend,theemperorShenNongDiscoveredteawhenhewasboilingdrinkingwateroveranopenfire.Someleavesfromanearbybushfellintothewaterandremainedthereforsometime.Theemperornoticedthattheleavesinthewaterproducedapleasantsmell.Laterhedecidedtotastethehotmixture.Itwasquitedelicious.Andinthisway,oneoftheworldsfavoritedrinkswasinvented.,Readthearticleandwriteanswerstothequestions.,Whatisthearticleabout?,Itisabouttheinventionoftea.,Itwasinventedoverthreethousandyearsago.,ItwasinventedbytheChineseemperorShenNong.,Itwasinventedbyaccident.,3.Whowasitinventedby?,4.Howwasitinvented?,2.Whenwasitinvented?,Writeanarticleusingthenotesinthebox.,Frompieplatetoflyingdisk.,Theflyingdiskwasinventedbycollegestudents.,TheyusedametalpieplatefromabakeryinBridgeport,Connecticut.Studentsatethebakeryspiesandthenthrewthepieplates.Today,thereareflyingdiskclubs,magazinesandafestival.,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短语示出来。被动语态的构成:助动词be+(及物动词的)过去分词,am(is,are)+donewas(were)+done,一般现在时,一般过去时,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.Thousandsofbeachesarepolluted(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.,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,