when-was-it-invented-sectionA.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Unit 9,Period 1,When was it invented?,No.2 Middle School,Yu Qian,four great,invention,s,compass,gun powder,printing,Paper making,A:When was the invented?,B:It was invented in _.,1976,1927,1876,1885,1971,light bulb,1879,Edison,.,When,was,it,invented,?,It,was invented,in,1879.,Who,was,it,invented,by,?,It,was invented,by,Edison,.,What,s,it,used,for?,It,s used,for,helping,people see in the dark.,Car,1885,When,was,it,invented,?,Who,was,it,invented,by,?,What,is,it,used,for?,Benz,.,It,was invented,in,1885.,It,is used,for,traveling.,It,was invented,by,Benz,.1876,Bell,1927,Beld,Kelif,1971,1976,Fen.Noyma,When,was,it,invented,?,Who,was,it,invented,by,?,What,is,it,used,for?,A:Look!This looks so interesting!,B:Ah,its a great invention of China.,A:Really?When _ it _?,B:I think it _ _ in Han Dynasty.,(,汉朝,),A:What _ it _ for?,B:Guess!,A:_ it _ for holding water?,B:No.It _ _ for testing earthquakes.,A:Wow,its really amazing!,was,invented,was,invented,is,used,Is,used,is,used,The passive voice.,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,.My bike was stolen yesterday.,This car is made in American.,2.,不必要说出动作执行者时,常用,.,eg,.Rome was not built in a day.,3.,为了突出强调动作的承受者时,常用被动语态,.,eg,.Thousands of beaches are polluted(,污染,).,The passive voice.,被动语态,主动语态变被动语态的结构图,:,Bell invented the telephone in 1876.,The telephone was invented by Bell in 1876.,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,The passive voice.,被动语态,主动语态变为被动语态的步骤,:,把原主动句中的,动作的承受着,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,.,The passive voice.,被动语态,主动语态改被动语态,:,Bell,invented,the telephone,in 1876.,was,by,把下列的句子变为被动语态的句子：,1,、,They speak English in Canada .,2,、,People used wood for making tables.,3,、,They make computers in the USA.,English is spoken in Canada(by them).,Wood was used for making tables.,Computers are made in the USA.,4,、,They grow rice in South China,.,5.We planted more trees this year.,6.I cleaned our classroom this morning.,More trees were planted this year.,Our classroom is cleaned this morning,.,Rice is grown in South China.,各种时态的被动语态的构成：,1.,一般现在时态,am,is,are+,过去,分词,2.,一般过去时态,was,were+,过去分词,1.,电话是什么时候发明的？,When,the telephone,?,我认为它是,1876,年发明的。,I think,in 1876.,2.,他们是用来做什么的？,What,they,?,他们是用来在黑暗中看东西的。,Theyre,in the dark.,3.,他们是被谁发明的？,Who were they,?1.Whos the little baby in the photo,Li Ying,？,-,It”s,me.This,photo fourteen years ago.,is taken B took C takes D was taken,2.Many accidents,by careless drivers last year.,A are caused B were caused,C have caused D will cause,3.An official,by reporters on food problems in Shanghai yesterday.,A.is interviewing B is interviewed,C.Was interviewing D was interviewed,3.The telephone,(use)for calling somebody.,4.Personal computers,(see)in many families now.,5.English,(speak)the most widely in the world.,6.This machine is used for,(make)camps.,一、,无,to,不定式,一感 二听,三让,四看,feel,listen to.hear,let.have.makewatch.see.look at.notice,变为被动时加上,to,eg.We often see him play basketball.,He,is often seen to play,basketball by us.,The boss made the children work for long.,The children,were made to work,for,long by the boss.,1.We often hear Tom play the piano.,2.The math teacher notice Mary do,homework,.,3.The teacher let Jack clean the classroom.,