Unit 3 The Internet Discovering useful structures课件 2023-2024学年高中英语人教版（2019）必修第二册

Unit 3 The Internet Discovering Useful Structures --- The Present Perfect Passive Voice 挑事儿： You hit me! Come and help me! I was hit / beaten. Lead-in:Review 一、结构：be + done The passive voice 被动语态 二、意义：被动语态表示主语是动作的承受者。 二、意义：表示过去发生的动作现在已经完成或仍将持续, 强调对现在的影响。 一、结构：主语 + have/ has + V-过去分词(done) The present perfect tense现在完成时态 The students have cleaned the classroom. 3 1.以上句子中所使用的时态和语态是 。 2.现在完成时的被动语态的构为： 。 现在完成时的被动语态 have/has been＋过去分词 An enemy has been slained. 一名敌人被击杀。 An ally has been slained. 我方队友被击杀。 You have been slained. 你被击杀了。 Presentation 一. Observe the example sentences and summarize the structures of the present perfect passive voice. 1.The classroom have been cleaned the students. 2.The author’s new story has not been published. 3.Has his washing machine been repaired? 4.Who has been invited? 二、Observe the present perfect passive voice in the sentences and discuss the structures of the sentences. 5 1.肯定式 S + have/has +been + done 2.否定式 S + have/ has + not + been + done... 3.一般疑 问句 Have/ Has +S +been + done... 4.特殊疑问句 疑问词+have/ has +S + been+done... 6 1.The students have cleaned the classroom. 2.The classroom have been cleaned the students. 二、Observe the present perfect passive voice in the sentences and discuss the meanings of the sentences. 7 The students have cleaned the classroom. The classroom has been cleaned. You needn’t clean it now. 现在完成时 active(主动） passive （被动） 定义：表示说话时已经完成的被动性的动作或结果，强调对现在的影响，主语是动作的承受者。 have /has + v-ed have / has + been + v-ed 现在完成时的被动语态 含义 结构 表示过去发生的被动动作现在已经完 成或仍将持续, 强调对现在的影响 have/has been done 形式 肯定式 否定式 疑问式 have/has been done have/has not been done Have/Has+主语+been done? 特殊疑问词+have/has+主语+been done? 用法 表示已经完成的被动动作 表示开始于过去并可能持续下去的被动动作 在时间状从,条件状从中,表示还未发生的被动动作 注意事项 区分have/has been done/ be being done/ be done 不及物动词或词组无被动 常与现在完成时连用的时间状