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Unit 4 When was it invented ? Section A Talk about the history of inventions. The passive voice. Language Goals: Grammar Focus: 1b Listen and match the inventions with the dates. a b e d c 1876 1885 1927 1971 1976 1c 1c When was the telephone invented ? I think it was invented in 1876. Julie Thompson batteryoperated slippers Chelsea Lanmon heated ice cream scoop Jayce Coziar and Jamie Ellsworth shoes with adjustable heels 2a Listen and number the inventions in the order that you hear. 3 1 2 2b Who was it / were they invented by ? It was/ They were invented by Chelsea Lanmon. 3b What do you think is the most helpful invention? I think the most helpful invention is the light bulb. Why is that? Well, it gives people more time to work and play every day. The passive voice. 被動(dòng)語(yǔ)態(tài) 英語(yǔ)中動(dòng)詞有主動(dòng)語(yǔ)態(tài)和被動(dòng)語(yǔ)態(tài)兩種語(yǔ)態(tài) . 主動(dòng)語(yǔ) 態(tài)表示主語(yǔ)是動(dòng)作的執(zhí)行者 ,被動(dòng)語(yǔ)態(tài)表示主語(yǔ)是動(dòng)作的 承受者 , 在被動(dòng)語(yǔ)態(tài)中動(dòng)作的執(zhí)行者有時(shí)用 b