Unit 3 The Internet Discovering Useful Structures 课件-2026-2027学年高一下学期英语人教版必修第二册

该高中英语课件聚焦现在完成时被动语态，以Mini-game及名言导入，通过判断被动句、找结构共同点、例句转换等环节，构建从识别到应用的学习支架，帮助学生逐步掌握"have/has been done"结构。 其亮点在于结合实例（如主动被动句转换、诗歌创作作业），培养语言能力（理解与表达）和思维品质（分析被动语态使用场景），提升学习能力（主动练习）。学生能深化语法理解，教师可高效开展教学。

The internet is becoming the town square for the global village of tomorrow Ⅰ Mini-game Judge if it is a passive sentence 1.Much has been written about the wonders of the World Wide Web. 2. The Internet has made our lives more convenient. 3. People's lives have been changed by online communities and social networks. 6. Many people have been helped by the club. 7. Jan has started taking online classes. 8. Jan's life has been greatly improved by the Internet. Find the common point Much has been written about the wonders of the World Wide Web. People's lives have been changed by online communities and social networks. Many people have been helped by the club. Jan's life has been greatly improved by the Internet. have/has been done Presenter:谢星焰 UNIT 3 THE INTERNET The internet is becoming the town square for the global village of tomorrow ——Present perfect passive voice COMPOSITION Ⅱ Present perfect passive voice have/has been done have/has done (present perfect tense) be done (passive voice) How do we change the voice? They have built a kind of new PC with more functions.→ A kind of new PC has been built with more functions (by them). S1 Verb1 O1 S2 Verb2 ①have/has done have/has been done ②The object (in the first sentence) The subject (in the second sentence) ③The subject (in the first sentence) The object/be omitted (in the second sentence) O2 Practice makes perfect 1.The software has been downloaded to help my phone battery last longer. 2.Has the Wi-Fi password been confirmed? 3.Has a comment been made about the online database? MEANING&USAGE Ⅲ Present perfect passive voice When do we usually use the present perfect tense? [have/has (been) done] Jan quit her job last year. Jan quit her job last year. When do we usually use the present perfect tense? Jan quit her job last year. I downloaded the app. Jan quit her job last year. Some one turned off the lights. Now she has time for her club. Jan quit her job last year. So I can use it now. Jan quit her job last year. So we can ‘t see anything. 1.Jan has quit her job, so now she has time for her club. 2.I have downloaded the app, so I can use it now. 3.The lights have been turned off, so we can't see anything. result past action When do we usually use the present perfect tense? Past occurrence (过去发生的动作) Present relevance (对现在的影响) What information does it indicate? Jan has quit her job, so now she has time for her club. present perfect tense——have/has (been) done now past future action influence turned off have/has (been) turned off Jan quit her job last year. Jan quit her job last year. When do we usually use the present perfect tense? Jan quit her job last year. I downloaded the app. Jan quit her job last year. Some one turned off the lights. Now she has time for her club. Jan quit her job last year. So I can use it now. Jan quit her job last year. So we can ‘t see anything. 3.The lights have been turned off, so we can't see anything. ` Some one has turned off the lights, so we can't see anything. MEANING&USAGE Ⅲ Present perfect passive voice Why do we use the passive voice? (be done) What would happen if we turn it to the active voice? 1.Much has been written about the wonders of the World Wide Web. 2.Jan's life has been greatly improved by the Internet. Unknown/unimportant agent (施动者未知或不重要) Recipient focus (受动者是关键/焦点) MEANING&USAGE Ⅳ Present perfect passive voice Why and when do we use the present perfect passive voice ?(have/has been done) HOMEWORK Ⅴ Present perfect passive voice $