Unit 3 Discovering Useful Structures 现在完成时被动语态课件-2022-2023学年高中英语人教版（2019）必修第二册

Unit 3 The Internet Discovering useful structures 1 Active and passive voices 单击输入您的封面副标题 Lead-in 被动语态复习 一、什么是语态? 语态是英语动词的一种表现形式,用来说明_和_之间的关系。 二、语态的种类:_和_ 主语 谓语动词 主动 被动 挑事儿: If you think you're such a tough guy, then hit me. You hit me! Come and help me! I was hit / beaten. 现在完成时的结构: S + have/ has + V-过去分词(done) 被动语态的结构: be(been)+ V-过去分词(done) Summary: 现在完成时的被动语态肯定式就是: 主语+have/has+been+V-过去分词 人教版2019版 高一 unit3 The Internet grammar【优秀课件】 人教版2019版 高一 unit3 The Internet grammar【优秀课件】 现在完成时的被动语态 Q: What can you find? I have ordered a pizza for you. A pizza has been ordered for you. The Internet has changed our life. Our life has been changed by the Internet. 现在完成时的被动语态 一、找出下面句子的谓语结构,哪些是主动?哪些是被动? Jan’s life has been greatly improved by the Internet. The Internet has greatly improved Jan’s life. People have written much about the wonders of the World Wide Web. Much has been written about the wonders of the World Wide Web. 被动 主动 主动 被动 6 现在完成时 被动语态 have/has been done 现在完成时的被动语态 be done have/has been How do we form the present perfect passive voice? 现在完成时的被动语态 二、现在完成时的被动语态意义及结构 表示动作发生在过去, 到现在已经完成或对现在产生的影响。动词和被修饰主语构成被动关系(例句结合导学案P55) 肯定式:have/has + been + v-ed... 否定式:have/has + not + been + v-ed... 一般疑问句: Have/Has +主语+ been+v-ed...? 特殊疑问句: 疑问词+have/has +主语+been+ v-ed...? 注意:下面情况下用被动语态:1. 强调动作的承受者,即动作的承受者是谈话的中心。2.不知道或不必要或为了委婉 /礼貌, 不便说出动作的发出者。3. 当动作的执行者带有较长的定语。 肯定形式: His homework has been finished. 否定形式: His homework has not been finished. 一般疑问句: Has his homework been finished yet? 特殊疑问句: How long has his homework been finished? 主语+have/has been done... 主语+have/has not been done... have/has+主语+been done...? 疑问词+have/has+主语+been done...? 结构形式 现在完成时的被动语态 三、现在完成时的被动语态有三种情况: 1) 表过去开始的被动动作一直持续到现在,常连用的时间状语有:for+段时间,since+时间状语(从句),these days, so far, up to now, in the last/ past few years等。 eg This class have been taught by Mr. Brown for two years. His Chinese has been improved a lot since he came to China. Rowling’s novels have been translated into many foreign languages so far. 2) 表