人教版九年级Unit 6 When was it invented -Section A Grammar focus 4a—4c-ppt课件-(含教案+视频+素材)-市级公开课-(编号：5003c).zip

教学目标教学目标： 1.知识与能力：掌握主动语态与被动语态互变，四种时态的被动语 态 及其用法。 2.过程与方法：通过比较、讲解、操练使学生能够灵活运用四种时 态的被动语态。 3.情感价值观：1.通过学习，学会变被动学习为主动学习； 2 树立环保意识，拯救我们的地球母亲。 教学重点教学重点： 熟练运用四种时态的被动语态。 教学难点教学难点： 熟练掌握四种时态的被动语态在不同的情境下的运用。 教学方法：任务型教学法，多媒体教学法，归纳教学法、练习法 教学用具：多媒体辅助教学 Teaching Procedures : Step 1 Greeting and Lead in play a video of London smog incident. Let students answer the questions: 1.what incident was it? 2.When did it happen? 3.How many people died of this incident? Step 2 the passive voice of the simple past tense 1. Show a sentence on the screen ,Ask the students to put the active voice into passive voice. 2. Practice the passive voice of the simple past tense. 3. Summary the passive voice of the simple past tense. Step 3 the passive voice of the simple present tense. 1 Now in China, a lot of cities are suffering from the same problem now. Show some pictures. Discussion: What problems are caused by the smog? 2 Practice the passive voice of the simple present tense. 3 Summary the passive voice of the simple present tense. Step 4 the passive voice of the present perfect tense 1. In the past few years, Chinese government has taken many actions to govern the smog. Show some pictures on the screen. 2. Ask: What has been done by the Chinese government? Help the students answer the questions by using the passive voice of the present perfect tense. 3. Practice the passive voice of the present perfect tense by asking and answer. 4. Summary the passive voice of the present perfect tense. Step5 the passive voice of the simple future tense. 1 In the future , what will people do to protect our environment ? 2 Practice the passive voice of the simple future tense. 3 Summary the passive voice of the simple future tense. Step 6 Summary and consolidation. Step 7 Exercises in class Step 8 Homework Blackboard Design: The Revision of Passive Voice was/were 一般过去时 am/is/are 一般现在时 Be + Vt PP have/has+been 现在完成时 shall/will+be 一般将来时 课后反思: