九年级英语全册 Unit 9 When was it invented Section A课件 人教新目标版.ppt

whenwasitinvented period1 1a 1c grammarfocus unit9 itwasinvented whatishedoing he s whatdoyouthinkatelephoneisusedfor atelephoneisusedfortalkingwithpeople makingtelephonecalls callingupfriends makingatelephonecall beusedfor doing sth 被用来做某事 atelephone acar atvset acomputer acalculator whatarethey inventions n 发明 whataretheyusedfor isusedfor callingupotherpeople takingpeopletoanotherplace calculating helpingpeoplewithstudyandwork knowingmoreabouttheworld inventorn 发明家eg edisonisafamousinventor inventv 发明eg edisonisafamousinventorwhoinventedthelightbulb 灯泡 inventionn 发明eg thelightbulbisagreatinvention beinventedby被 发明eg thelightbulbwasinventedbyedison edison a ithinkthetelephonewasinventedbeforethecar b well idisagree ithinkthetelephonewasinventedafterthecar inwhatorder 顺序 youthinktheywereinvented number1 5 listenandmatchtheinventionsandthedates 1876 1885 1927 1971 1976 daecb 1b g lifemusthavebeendifficultwhenyouwereakid w oh notreally whydoyousaythat g well youdidn thavemanymoderninventions like you w ofcoursewedid howolddoyouthinkiam 1 g howaboutcars ibetcarsweren tinventedyet w suretheywere 2 myfamily g ha ha well didyouhaveatv w no wedidn t 3 ithink somefriendsofmine g andibetyou welearnedinschoolthathand held 4 and 5 w you reright ididn thavethosethingswheniwasyoung butidonow 1 thetelephonewasinventedin1876 2 carswereinventedin1885 3 thetvwasinventedaround1927 4 calculatorswereinventedin1971 5 personalcomputerswereinventedin1976 a whenwasthe invented b itwasinventedin 1c pairwork 1976 1927 1876 1885 1971 baird 贝尔德 bell 贝尔 wozinakandjobs 沃兹奈克和乔布斯 simckley 辛克莱 benz 本茨 guesswhotheseinventionswereinventedby guessing maybe perhapsthe wereinventedbyxxx a what sthisinenglish b it satvset a whenwasthetvsetinvented b itwasinventedin1927 a whowasitinventedby b itwasinventedbybaird a whatisitusedfor b itisusedforknowingmoreabouttheworld askandanswer 1885 1971 1976 wozinakandjobs simckley baird 1927 bell 1876 benz a what sthisinenglish b it s a whenwas invented b itwasinventedin a whowas inventedby b itwasinventedby a whatis usedfor b itisusedfor thefourgreatinventionsofchina chinaisanoldcountrywithalonghistory ithasthefourgreatinventions weuseatelephonefortalkingwithpeople bellinventedthetelephone bellinventedthetelephonein1876 atelephoneisusedfortalkingwithpeople itwasinventedbybell itwasinventedin1876 findthedifferences grammar weuseatelephonefortalkingwithpeople bellinventedthetelephone bellinventedthetelephonein1876 atelephoneisusedfortalkingwithpeople thetelephonewasinventedbybell thetelephonewasinventedin1876 passivevoice 被动语态 被动语态 p143 定义 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 wespeakenglish 主语 谓语 宾语 englishisspokenbyus 主语 谓语 宾语 主动语态 被动语态 巧记 宾变主 主变宾 前加by动变被 看清be 结构be p p 主变被解题步骤 1 找宾语 即动作的承受者 eg theymakeshoesinthatfactory shoes 2 判断宾语的单复数 即be动词的单复数 arewere 3 判断动词的时态 即be动词的时态 4 修改谓语的时态 即原句动词改为过去分词 made 5 修改原句的主语 即by 主语 宾语 人称代词 bythem inthatfactory 6 其它的成分 定语 状语 不变 1 peopleuseknivesforcuttingthings knives forcuttingthings 2 thestudentscleanthewindowsoftheirclassroomtwiceamonth thewindowsoftheirclassroom twiceamonth 3 ifoundtheticketonthefloor onthefloor 4 itoldhertoreturnthebookintime she toreturnthebookintime 5 nowpeoplecanusecomputerstohelpthem nowcomputers t