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1、Section A,Unit9 When was it invented?,Talk about the history of inventions.,The passive voice.,Grammar Focus:,Language Goals:,Four great inventions of China,Cai Lun invented the paper making in 105 .,invented,the paper making,in 105 .,Cai Lun,The paper making,was,by,invention,invent,inventor,-Who wa
2、s the paper making invented by (in 105)?,-It was invented by Cai Lun.,The paper making was invented by Cai Lun in 105.,Task 1: Listen and find out the dates of the inventions.,The was invented in ,1885,1876,1971,1976,1927,Do you remember?,A: When was the invented? B: It was invented in ,Task 2: Gues
3、s: Which one was invented earlier and which one was invented later.,A: I think the was invented before the B: Well, I think the was invented after the ,calculator,light bulbs,invention,Edison,inventor,Edison invented the light bulb.,The light bulb was invented by Edison.,Karl Benz invented the car.,_ was invented by _.,The car,Karl Benz,Bell invented the telephone.,_ was invented by _.,The telephone,Bell,Task 3: Lets guess who invented it .,A: Who was the invented by? B: I think it was invented by ,car computer telephone light bulb,Steve Jobs and Steve Wozniak Edison Karl Benz Bell,