Unit 3 The Internet 第3课时 Discovering useful structures Grammar语法 现在完成时的被动语态（教学课件）-【上好课】高一英语(人教版2019必修第二册）

Unit 3 The Internet Period 3 Discovering useful structures 1 The Internet is becoming the town square for the global village of tomorrow. --Bill Gates Teaching objectives 1.Analyze the forms and features of the present perfect passive voice. 2.Find out the differences in meaning and function between the active and passive forms. 3.Master the functions of the present perfect passive voice in the context and use it in real situations. 3 The Present Perfect Passive Voice 现在完成时的被动语态 主动语态变被动语态的原则 “三变” 例：They are building nine parks. 原句主语 by的宾语 宾语 主语 谓语由主动 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 Nine parks _________________ by them. are being built 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成为： 。 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。 观察例句，归纳用法 The students have cleaned the classroom. The classroom has been cleaned. You needn’t clean it now. 现在完成时 active passive 表示说话时已经完成的被动性的动作或结果，主语是动作的承受者。 现在完成时的被动语态 例2：Have they been sent abroad to study English? 他们已经被派往国外学英语了吗? 例3：Who has been invented? 谁受到了邀请？ 2 构成 陈述句 主语+has/ have been（not）+P.P.+... 例1：Her motorbike has been stolen. 她的摩托车盗了。 一般疑问句 Has/have+主语+been+P.P.+...? 特殊疑问句 特殊疑问词+have/has +been +P.P.+...? 8 现在完成时的被动语态的句式： The research has been done successfully. 现在完成时被动语态的肯定式：have / has been done The author’s new story has not been published. 现在完成时被动语态的否定式：have / has not been done Has his washing machine been repaired? 现在完成时被动语态的一般疑问句：把have / has提到主语的前面 Who has been invited? 现在完成时被动语态的特殊疑问句：特殊疑问词 + have / has been done 9 The buildings (destroy) by the earthquake already. have been destroyed Seven Harry Porter books (write) by J. K. Rowling so far