Unit 5 Section Ⅲ Discovering Useful Structures（课件PPT）-【精讲精练】2025-2026学年高中英语必修第一册（人教版）

该高中英语课件聚焦定语从句的引导词（that/which、when、why、where等）及介词+关系代词（in which、for which等）结构，通过why、when、where等疑问词导入，从基础引导词到介词搭配构建递进式学习支架，帮助学生衔接前后语法知识。 其亮点在于分模块设计（语法精讲-核心知识-随堂演练-课时作业），结合含about whom的定语从句例句及“the more...the more...”句型练习，培养语言能力与思维品质。通过分层练习提升学习能力，学生能系统掌握语法并灵活运用，教师可直接借助结构化内容高效开展教学。

Section Ⅲ　Discovering Useful Structures Unit 5　Languages Around The World 栏目导航 Unit 5　Languages Around The World 1 栏目导航 语法精讲•技能培养 01 核心知识•关键能力 02 随堂演练•巩固提升 03 课时作业•知能达标 04 栏目导航 Unit 5　Languages Around The World 1 语法精讲•技能培养 栏目导航 栏目导航 Unit 5　Languages Around The World 1 栏目导航 Unit 5　Languages Around The World 1 栏目导航 Unit 5　Languages Around The World 1 栏目导航 Unit 5　Languages Around The World 1 栏目导航 Unit 5　Languages Around The World 1 栏目导航 Unit 5　Languages Around The World 1 why when where where 栏目导航 Unit 5　Languages Around The World 1 栏目导航 Unit 5　Languages Around The World 1 栏目导航 Unit 5　Languages Around The World 1 栏目导航 Unit 5　Languages Around The World 1 that/which when that/which why where which/that 栏目导航 Unit 5　Languages Around The World 1 栏目导航 Unit 5　Languages Around The World 1 栏目导航 Unit 5　Languages Around The World 1 栏目导航 Unit 5　Languages Around The World 1 in which for which with whom with which 栏目导航 Unit 5　Languages Around The World 1 核心知识•关键能力 栏目导航 栏目导航 Unit 5　Languages Around The World 1     栏目导航 Unit 5　Languages Around The World 1 栏目导航 Unit 5　Languages Around The World 1 to make against/with struggled to his feet 栏目导航 Unit 5　Languages Around The World 1     栏目导航 Unit 5　Languages Around The World 1 In my opinion/view As far as I'm concerned From my point of view 栏目导航 Unit 5　Languages Around The World 1     栏目导航 Unit 5　Languages Around The World 1 the more I know about my country the more colourful 栏目导航 Unit 5　Languages Around The World 1 随堂演练•巩固提升 栏目导航 栏目导航 Unit 5　Languages Around The World 1 why where when that/which where 栏目导航 Unit 5　Languages Around The World 1 This is the humorous guy about whom I often talk with you. I will show you the book in which/where I found the answer. There came a day when the rain fell at last. 栏目导航 Unit 5　Languages Around The World 1 He is a warm-hearted person whom/who/that you can turn to for help. The man whose spoken English is very good is captain of the team. 栏目导航 Unit 5　Languages Around The World 1 课时作业•知能达标 栏目导航 课时作业•知能达标 栏目导航 Unit 5　Languages Around The World 1 谢谢观看 栏目导航 Unit 5　Languages Around The World 1 限制性定语从句(2) 一、关系副词的指代及功能 关系副词 先行词 功能 when 表示时间的名词 时间状语 where 表示地点的名词 地点状语 why reason 原因状语 1．关系副词when引导定语从句时，先行词应是表示时间的名词，关系词在从句中作时间状语(＝at/in/on/during which)。 The Mid-Autumn Festival is a time when each family has its members get together. 中秋佳节是每一个家庭团圆的时候。 2．关系副词where引导定语从句时，先行词应是表示地点或抽象地点的名词，关系词在从句中作地点状语(＝at/in/on which)。 Beijing is the cultural center of our country，where you can visit many places of interest. 北京是我们国家的文化中心，在这里，你可以参观很多名胜古迹。 3．关系副词why引导定语从句时，先行词必须为reason，关系词在从句中作原因状语(＝for which)。 The reasons why I am writing to apply to be a volunteer are as follows.我写信申请成为一名志愿者的原因如下。(应用文之申请信) [即时训练1]　用适当的关系代词或关系副词填空 ①The reason ___ we Chinese celebrate the Dragon Boat Festival is in honour of Qu Yuan. ②We are living in an information age ____ the Internet is playing a major part in our life. ③Schools should be lively places _____ students can grow up happily and healthily. ④After living in Australia for 55 years he returned to the small town _____ he grew up as a child. 二、关系代词和关系副词的判断 表示时间、地点及原因的名词作先行词时，定语从句可用关系代词引导，也可用关系副词引导。若关系词在定语从句中作状语，应用关系副词；若关系词在定语从句中作主语或宾语，则应用关系代词。 ①Do you remember the days when we chatted with each other all night? 你还记得我们整夜聊天的那些日子吗？(when作时间状语) ②Do you remember the days that/which we spent together on the farm? 你还记得我们在农场一起度过的那些日子吗？(that或which作spent的宾语) ③I don't know the reason why he didn't turn to his good friend for help yesterday. 我不知道昨天他为什么没向他的好朋友求助。(why作原因状语) ④I won't listen to the reason that/which you have given us. 我坚决不听你给我们的那个理由。(定语从句中缺少宾语，所以用that/which，不用why) [即时训练2]　选词填空(that，which，when，where，why) ①I will never forget the days __________ we spent together. ②Do you remember the day ____ we first met? ③The reason __________ he explained at the meeting was not sound. ④The reason ___ he was late was that he missed his bus. ⑤The school _____ I studied for only two years was three kilometres away. ⑥This is the house __________ was built by my grandfather forty years ago. 三、“介词＋关系代词”引导的定语从句 1．当关系代词在定语从句中作介词的宾语时，我们通常用“介词＋关系代词”引导定语从句。如果指“人”，用“介词＋whom”；如果指“物”，用“介词＋which”；关系代词有时也用whose(作定语)。 ①This is the camera with which he often takes photos. 这就是他经常用来拍照的相机。(with the camera 用照相机) ②The boss in whose company Mr.King worked heard about the accident. 金先生所工作的公司的老板听到了这起事故。(in the boss' company 在老板的公司) 2．“介词＋关系代词(which/whom)”中介词的选择：一先，二动，三意义。 (1)一先 即根据先行词来确定介词。 The factory in which I'm working mainly produces computers. 我所工作的工厂主要生产电脑。(in which代替in the factory，表“在工厂里”用介词in) (2)二动 即根据定语从句中的谓语动词来确定介词。 This is the teacher to whom I referred. 这就是我提到的老师。(refer to 提到) (3)三意义 即根据定语从句的意义确定介词。 The thing without which we can not live is air. 我们生存离不开的是空气。 [即时训练3]　用“介词＋关系代词”填空 ①They also had a small pond ________ they raised fish. ②None of us know the reason _________ Tom didn't come. ③This is the man _________ I just shook hands. ④This is the pen __________ he often writes articles. [核心词汇·练透] struggle n.&vi.斗争；奋斗；搏斗 struggle for... 努力争取……；为……而斗争 struggle against/with...　与……作斗争 struggle to do sth　努力做某事 struggle to one's feet　某人挣扎着站起来 [经典佳句]　We are willing to struggle for our beautiful future with our healthy body and mind. 我们愿用健康的身心，为我们美好的未来而奋斗。 [即时训练]　单句语法填空/完成句子 ①From now on，I hope every one of us will struggle _______ (make) our dream come true. ②We have to struggle ____________ all kinds of difficulties from home and abroad. ③虽然他伤得很重，但他挣扎着站了起来继续往前跑。 Though he was badly injured，he _____________________ and went on running. point of view 观点；看法 在某人看来 [经典佳句]　From my point of view，you can have a better understanding of the Spring Festival through the activities. 在我看来，通过这些活动，你可以更好地了解春节。 [即时训练]　一句多译 在我看来，你应该向老师求助。 A．__________________，you should turn to your teacher for help. B．______________________，you should turn to your teacher for help. C．_____________________，you should turn to your teacher for help. [重点句型·通关] 教材原句：It was exercise for the brain；the more I learnt of a language，the more my brain would grow.这是对大脑的锻炼；我对一门语言学得越多，我的智力就增长得越快。 (1)the more...，the less...越……，就越不…… (2)此结构中，第一个“the＋比较级．..”是表示条件的状语从句，在表示将来意义的情况下，从句用一般现在时表示将来。 [句式分析]　the＋比较级...，the＋比较级...越……，就越…… [即时训练]　完成句子 ①与此同时，我对我的祖国了解得越多，我对她的爱就越深。 At the same time，________________________________，the deeper love I have for her. ②他们拥有的朋友越多，他们的生活就越丰富多彩。 The more friends they have，__________________ their lives will be. Ⅰ.用适当的关系词填空 1．This is the reason ___ I have come so far to look for you. 2．This is the place _____ the famous headmaster delivered a speech. 3．The old couple will never forget the days ____ they had a summer camp in Australia. 4．The volunteers will never forget the days __________ they spent together in Guangzhou. 5．Their relationship has reached the point _____ they have to break up. Ⅱ.把下列句子合并为定语从句 1．This is the humorous guy.I often talk about him with you. →__________________________________________________ 2．I will show you the book.In the book I found the answer. →__________________________________________________ 3．There came a day.The rain fell at last then. →______________________________________ 4．He is a warm-hearted person.You can turn to him for help. →_______________________________________________________ 5．The man is captain of the team.His spoken English is very good. →_______________________________________________________ $$