Unit 3 The Internet Discovering Useful Structures 教学设计-2024-2025学年高中英语人教版（2019）必修第二册

课题 Period4 Discovering Useful Structures 课型 grammar 主备人 集体备课时间 课时安排 2 授课教师 授课班级 授课时间 教学 目标 1. Get students to have a good understanding of the basic usages of the present perfect passive voice. 2. Enable students to use the tense flexibly. 3. Develop students’ speaking and cooperating abilities. 4. Strengthen students’ great interest in grammar learning. 教学重点 How to enable students to have a good understanding of the basic usages of the present perfect passive voice. 教学难点 How to enable students to use the tense flexibly. 教学方法 Discussing，summarizing and practicing ；Cooperative learning 集体备课教案 二次备课（标注用红笔） 教学过程 Step1.语法自主探究 感知语法规律 1.Much has been written about the wonders of the World Wide Web. 2.People’s lives have been changed by online communities and social networks. 3.Many people have been helped by the club. 4.Jan’s life has been greatly improved by the Internet. 5.The ink has not been removed from the clothes. 6.Haven’t your problems been solved? 7.How many buildings have been built in your school? 【规律感知】 1.以上句子中所使用的时态和语态是现在完成时的被动语态。 2.其构成为：have/has__been＋过去分词。 现在完成时的被动语态表示到现在为止某事已经被完成或被做。这种语法项目既要表示现在已经完成又要表示被动的含义，因此很多同学在具体运用中容易顾此失彼，难以把握。 图解--语法脉络 一、现在完成时的被动语态的4种形式 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 (not)＋主语＋been done？ 特殊疑问式 疑问词＋have/has (not)＋主语＋been done？ 二、现在完成时的被动语态的3个用法 1.表示被动的动作在说话之前已经完成，强调过去的动作对现在造成的影响或产生的结果，通常与already，yet，never，recently等副词及时间状语so far，by now，up till/to now，since等连用。 三、使用现在完成时的被动语态的6点注意 1.与一般过去时的被动语态的区别。一般过去时的被动语态所表示的动作或状态与现在的情况没有联系，而现在完成时的被动语态则强调与现在的情况有联系。 2.非延续性动词，如borrow，finish，begin，start，buy，marry，open，join等构成的现在完成时的被动语态不能与表示一段时间的状语连用。若要表达相应的意思，则要改换动词或时态。 3.短语动词是一个不可分割的整体，在被动语态中要保持其完整性，其中的介词或副词不可省略。 It is said that the problem has been looked into. 据说已经调查了这个问题。 4.只带有一个宾语的动词变为被动语态时，将主动语态的宾语变为被动语态的主语。 We have built many houses in the past ten years. →Many houses have been built in the past ten years. 在过去的十年里我们建了很多房子。 5.带有双宾语的动词，如give，send，bring，take，teach，show，tell，make，sing，write，read，sell，buy，tell，pay，lend，pass，promise等，变为被动语态时，可将间接宾语变为主语，直接宾语保留不动。也可将直接宾语变为主语，间接宾语保留，保留宾语前加上介词to或for。用to还是for，需根据动词的搭配来确定。 We have given him a lot of cash. →He has been given a lot of cash. →A lot of cash has been given to him. 我们给了他很多现金。 6.带有复合宾语的动词变为被动语态时，只能将宾语变为主语，原来的宾补改为主语补足语。原来省略to的不定式作宾补的，被动语态中要用带to的不定式。 I have told them to take their identity cards. 作业 1. Have a dictation of the rules of the present perfect passive voice. 2. Finish off the exercises in the workbook. 板 书 Grammar: 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 (not)＋主语＋been done？ 特殊疑问式： 疑问词＋have/has (not)＋主语＋been done？ 反 思 学科网（北京）股份有限公司 $$