英语人教版九年级全册unit6 perood1.docx

Unit 6When was it invented?Section A 1a-3c蟒河中学 梁育Learning objectives:1. Knowledge objectives:To learn to understand and use passive voice To listen and speak about the history of inventions using passive voiceTo listen and speak about what inventions were used for using passive voice一般过去时的被动语态；2.Ability objectives:一般过去时的被动语态onfident and happy man.二、Key points: The vocabulary.三、Difficult points:2b、2c、2d四Teaching steps:Step1 ：Do you know?What are the Four Great Inventions in ancient China?Step2 Whats this called in English?Look at the things. In what order do you think they were invented? I think the calculator was invented before the computer.B: Well, I think the calculator was invented after the computer.GameA: I think was invented before B: Well, I think was invented after The car was invented before the TV set.Objectives：To learn to understand and use passive voice To listen and speak about the history of inventions using passive voiceTo listen and speak about what inventions were used for using passive voiceStep2：1a Look at the things below. In what order do you think they were invented? Discuss them with your group. Then number them 14 (1 = first, 4 = last).Watch and read1c Student B, cover the dates. Student A, ask Student B when the things in the picture in 1b were invented. Then change roles and practice again.