九年级英语上册 Section A 课件 人教新目标版.ppt

九年级新目标 unit9whenwasitinvented sectiona 1a 2c thefourgreatinventionsofchina gunpowder papermaking compass printing whichdoyouthinkisthemostimportantinventionintheworld whatotherinventionscanyouthinkof tv telephone radio computer calculator car ithinkthemostimportantinventionis telephone b itwasinventedin1876 a whenwasthetelephoneinvented a whowasthetelephoneinventedby b itwasinventedbybell a whatisitusedfor b itisusedfortalkingonthephone in1876 bybell computer a whenwasthecomputerinvented b itwasinventedin1976 a whatisitusedfor b itisusedforchattingonline studying in1976 television a whenwasthetelevisioninvented in1927 b itwasinventedin1927 a whatisitusedfor b itisusedforwatchingexcitingmatches calculator a whenwasthecalculatorinvented in1971 b itwasinventedin1971 a whatisitusedfor b itisusedforcalculating car a whenwasthecarinvented in1885 b itwasinventedin1885 a whowasthecarinventedby b itwasinventedbykarlbenz a whatisitusedfor b itisusedforgoingforadrive karlbenz 1876 1885 1927 1971 1976 whenwas invented itwasinventedin pairwork whowas inventedby itwasinventedby inventionsinventors papermaking ts ailunplane wrightbrotherslightbulb edisoncar karlbenztelephone bell pairwork pairwork whatis are usedfor it theyis areusedfor cups drinkingtea stamps sendingletters knife cuttingthings shoeswithadjustableheels it susedforscoopingreallycoldicecream right itwasinventedbychelsealanmon battery operatedslippers heatedicecreamscoop 2alistenandnumbertheinventionsintheorder 3 1 2 可调整鞋跟的鞋子 电池供电的拖鞋 加热的冰淇淋勺 2blistenagainandmatchtheinventionswiththeirinventorsanduses 被动语态的构成 助动词be 及物动词的过去分词 1 一般现在时 am is are done 2 一般过去时 was were done 3 含有情态动词的被动语态结构 情态动词 be done bellinventedthetelephonein1876 thetelephonewasinventedbybellin1876 主语 谓语 宾语 时间状语 主语 谓语 宾语 时间状语 四 主动语态变为被动语态的步骤 1 主动语态的宾语变成被动语态的主语 2 主动语态的谓语动词变为被动语态的谓语词 即 be 及物动词的过去分词 be有时态 人称和数的变化 3 主动语态的主语变为by的宾语 changethefollowingsentencesintopassivevoice 1 edisoninventedthelightbulb thelightbulb edison 2 allthestudentsliketheirteacher theirteacher byallthestudents 3 americanspeakenglish english american 4 wevisitedthisfarmlastyear 5 isawhimenterther