课件 Period 3 Report an ongoing event & Help the wildlife in your neighbourhood（Unit 2 Wildlife protection）-高中英语必修2（新教材同步课件） (共14张PPT)

讲师：刘涛 Wildlife protection–Discovering Useful Structures Report an ongoing event & Help the wildlife in your neighbourhood Underline the passive voice in the sentences. Can you change them into active voice? ? removed the Tibetan antelope from the endangered species list in June 2015. 1. The Tibetan antelope was removed from the endangered species list in June 2015. Lead in Hunters are hunting African elephants. What are people doing to help them? What measures are people taking to help them? Underline the present continuous passive voice in the sentences, change them into active voice and compare the differences in meaning. African elephants are being hunted. What is being done to help them? What measures are being taken to help them? 共性：现在进行时表示正在发生的事件； 差异：所强调的重点（主语）不同。 Discovering 猎人 大家 濒危动物 保护措施 被动语态的构成结构 被动语态的使用情境 不知道或者不需要提及动作的发出者； 强调动作的承受者 时态 主动 被动 一般现在时 do /does am/is/are done 一般过去时 did was/were done 现在进行时 am/is/are doing am/is/are being done Summary Choose t