Unit3 Period Ⅲ Discovering Useful Structures-【优化探究】2023-2024学年新教材高中英语必修第二册同步导学案配套PPT课件（人教版）

人教英语必修第二册 返回导航上页下页 Period III Discovering Useful Structures 单元语法：The present perfect passive voice(现在完成时的被 动语态) 人教英语必修第二册 返回导航上项下页 核心语法专项突破 课时作业巩固提升 人教英语必修第二册 返回导航上页下项 核心语法专项突破 [语法体会] [生活中的语法] Have you heard many Yes.Some people parts of the country have have been killed and been swept through many have been by floods recently? lost. 人教英语必修第二册 返回导航上页下页 [学习中的语法] DOver time I have been changed quite a lot. 2The machines have been used in offices and homes since the 1970s. 3Over time my memory has developed so much that,like an elephant, I never forget anything I have been told! 4Since the 1970s,many new applications have been found for me. 人教英语必修第二册 返回导航 上页下页 5They have also been put into robots and used to make mobile phones as well as help with medical operations. 6They have even been put into space rockets and sent to explore the Moon and Mars. 7Such a thing has never been heard of before. 8The room has already been cleaned. 人教英语必修第二册 返回导航上页下页 [我的发现] (1)以上句中使用了现在完成时的被动语态；其谓语动词的构成为 have/has been done (2)列举上面例句所ver mep时incthe:7q龉： before,already 人教英语必修第二册 返回导航上页下页 [知识精要] 一、概念 现在完成时表示过去所发生的动作或事情对现在造成的影响或产 生的结果，着眼点在现在。若动作与主语之间构成动宾关系，则 用现在完成时的被动语态。 人教英语必修第二册 返回导航上项下页 二、基本结构 肯定式 主语+have/has been done 否定式 主语+have/has not been done.. 一般疑问式 Have/Has+主语+been done..? 特殊疑问式 疑问词+have/has(+主语)+been done..? 人教英语必修第二册 返回导航上页下页 He has been selected to take part in the sports meeting.他已被挑选出 来参加运动会。 The construction of the bridge has not been finished.桥的建设还没有 完成。 Has the date for the next meeting been decided?下次会议的日期决 定了吗？ How long has your computer been used?你的电脑用了多久了？ 人教英语必修第二册 返回导航上页下页 [即学即练1] 按要求完成下面题目 Li Ping has already been told the good news. ①将上面的句子变为否定句。 Li Ping hasn't been told the good news yet. ②将上面的句子变为一般疑问句。 Has Li Ping been told the good news yet? ③将上面的句子对Li Ping进行提问。 Who has been told the good news yet