Unit 2 Wildlife Protection Discovering useful structures 语法 课件-2023-2024学年高中英语人教版（2019）必修第二册

Period 3 Discovering Useful Structures Unit 2 Wildlife Protection Report an ongoing event 假定你是李华，你校下周五将举办主题Wildlife Protection的海报设计大赛。请给交换生Jim写一封邮件，告诉他这一活动并请他参与你班的海报设计。 第一段：写信目的 学校将举办海报设计大赛，邀请他参加 第二段：要点内容 Jim的优势，比赛的目的和要求等 第三段：期待参加 Dear Jim, There’s some good news. Our school is going to hold a poster competition next Friday. The poster should be about wildlife protection. All the classes are expected to take part. As far as I know, you love animals and have been expecting to do something to protect wildlife. Besides, you’re good at drawing. So I hope you can join us in designing a poster for the coming competition. It’s a great chance to express your ideas and show your creativity. Yours, Li Hua Review Change the sentences into the passive form. Active voice (主动语态)  Passive form (被动语态)  (1) I take a book. (1) The book is taken by me. (2) He waters the flowers every day. (2) The flowers are watered by him every day. (3) The famers don't grow apples on the farm. (3) Apples are not grown by the farmers on the farm. (4) Can we put our bikes here? (4) Can our bike be put here? 主动语态变被动语态的原则 “三变” 原句宾语变为主语 原句主语变为by短语 谓语由主动变为被动 “三不变” 原句意思不变 原句时态不变 原句主谓宾以外成分不变 African elephants are being hunted. Lead-in 1.Hunters are hunting African elephants. 2.Miki is playing a basketball . 3.The girl is reading a book. A basketball is being played by Miki. A book is being read by the girl. 小结：现在进行时 现在进行时的被动语态 am/ is /are doing am/ is /are being done 6 1. Mary __________________________ (interview) now. 3. The disease ___________________ (study) at present by scientist. 4. Many interesting experiments___________________(do)these days. 5. My washing machine ________________(repair)this week,so I h