Unit 1 Section Ⅴ Extended reading（课件PPT）-【步步高】2024-2025学年高中英语选修第一册学习笔记（译林版）

该高中英语课件围绕“地球内部结构研究”主题，通过“速读—细读—读后”三步学习支架，引导学生从整体理解（如篇章结构分析、大意归纳）到深度细节获取（地球结构、压力数据表格填写），再到语法填空与写作应用，构建连贯的阅读学习脉络。 其亮点在于分层培养核心素养，通过表格对比不同深度的压力数据（如用“大象数量”类比地下压力），培养信息筛选与逻辑思维，提升思维品质；长难句分析拆解复合句结构（如含what宾语从句的并列句）并结合翻译，强化语言理解与表达能力；写作设计将课文句式（如it be reported that...、the next time状语从句）迁移到“智能手机使用”主题仿写，实现阅读输入到写作输出的转化，提升学习能力。学生能在科普语境中提升语言技能与思维，教师可直接使用分层练习与写作模板，提高教学效率。

Section Ⅴ Our living planet Unit 1 Extended reading Part 1　课文整体理解 Part 2　长句难句分析 Part 3　基础知识达标 整体理解 课文 3 Step 1　速读——整体理解文意 Ⅰ.明文章大意 What is the main idea of the passage? A.The study of the inside of the Earth. B.The benefits of studying the Earth. C.The Earth’s internal structure. D.The challenges of studying the inside of the Earth. √ Ⅱ.悉篇章结构 1.Read the article on P11 and fill in the blanks. Para.1：Introduction to the (1) of studying the inside of the Earth. Para.2：The (2) of studying the inside of the Earth. Para.3：The other (3) of studying the inside of the Earth. Para.4：The (4) of studying the inside of the Earth. topic challenges benefits importance/significance 2.Read the comic strip on P12 and fill in the tables. Depth What (1)________ No more earthworms 122 metres (2) of the wild fig tree of South Africa 2,400 metres (3)_________________________________ 4 metres The deepest known tree roots The deepest underground laboratory Depth Where Pressure 30,000 metres At the boundary between the Earth’s crust and the mantle below 131 elephants 150,000 metres At the place (4)________________ ____________   750,000 metres (5)__________________ 3,280 elephants 2.9 million metres Close to the Earth’s core about(6)________ elephants 6 million metres (7)________________________ over (8)________ elephants where diamonds were formed In the lower mantle 17,000 At the centre of the Earth 47,000 Step 2　细读——深度获取细节 1.What can we know about the mantle? A.It is in the deepest of the Earth. B.It covers a solid centre. C.The core is surrounded by the mantle. D.Scientists will drill into the mantle very soon. √ 2.How many benefits of studying the inside of the Earth are mentioned in the passage? A.One. B.Two. C.Three. D.Four. √ 3.Why are elephants mentioned in “Journey to the centre of the Earth”？ A.There are many elephants living on the Earth. B.The more the elephants are，the higher the temperature is. C.The number of the elephants indicates the pressure inside the Earth. D.The deeper we arrive into the Earth，the more elephants we may see. √ Step 3　读后——课文语法填空 The structure of the Earth is made up 1. the crust，mantle and core. Scientists learn the Earth’s internal structure mainly by 2. (analyse) earthquake waves.They are now trying to drill very deep holes to discover more information.However，this is 3. (challenge) due to the Earth’s intense pressure and heat，as well as the 4. (difficult) in choosing the right place to drill. of analysing challenging difficulty Studying the inside of the Earth 5. (have) various advantages.It not only enables us to gain a 6. (good) understanding of the geology of the Earth，7. opens up many possibilities for life above ground.For example，by looking deep down beneath the Earth，scientists may learn how to store hydrogen 8. (safe).They may also gain new insights into the origin of life，9. might help answer questions whether life could be found on Mars. Such a study as above would lead to exciting and enlightening 10. (discovery)，and benefit the mankind. has better but safely which discoveries 返 回 难句分析 长句 13 1. (unfortunate)，we cannot crack the Earth open like an egg，so much of what scientists know about the Earth’s internal structure is based on (analyse) earthquake waves.(P11，Para.1) 结构分析：此句话为 句。前后两个分句为 关系；其中so后面的分句中what引导 从句。 汉语翻译：____________________________________________________ ______________________________________________________________ Ⅰ.补句子　析结构 Unfortunately analysing 并列复合 因果 宾语 不幸的是，我们不能像打破鸡蛋一样把地球敲开，因此科学家对地球内部结构的了解大多是基于对地震波的分析。 2.However，within a few years，scientists are hoping (drill) into the mantle，which will help us better understand the geology of the Earth.(P11，Para.2) 结构分析：此句话为 句。which引导 从句。 汉语翻译：_____________________________________________________ _______________________________________________________________ 然而，在几年内，科学家们希望钻进地幔，这将有助于我们更好地了解地球的地质。 to drill 主从复合 非限制性定语 3. has been discovered that under certain extreme conditions of pressure and temperature，water forms ice cages that trap hydrogen inside.(P11，Para.3) 结构分析：此句话为 句。第一个that引导 从句；第二个that引导 从句，修饰先行词 。 汉语翻译：_____________________________________________________ _______________________________________________________________ 人们已经发现，在某些极端的压力和温度条件下，水会形成储存氢的冰笼。 It 主从复合 主语 定语 ice cages 4.However，the microorganisms in a gold mine of South Africa survive where the sun never shines， (rely) on energy from certain rocks. (P11，Para.3) 结构分析：此句话为 句。where引导 从句。 汉语翻译：_____________________________________________________ _______________________________________________________________ 然而，南非一座金矿中的微生物依靠着某些岩石提供的能量，在没有阳光的地方生存。 relying 主从复合 地点状语 5.Surely，a study of the inside of our planet would lead exciting and enlightening (discover)，and benefit all who walk upon it. (P11，Para.4) 结构分析：此句话为 句。who引导 从句，修饰先行词 。 汉语翻译：_____________________________________________________ _______________________________________________________________ 毫无疑问，对我们星球内部的研究会带来激动人心和有启发性的发现，会惠及所有行走在其上的人们。 to discoveries 主从复合 限制性定语 all Ⅱ.研典句　学用法 the next time引导的时间状语从句 The next time you take a walk，think about the importance of what lies beneath your feet.(P11，Para.4) 下次你散步的时候，想想你脚下之物的重要性。 结构分析：此句话为主从复合句。The next time 作连词，引导时间状语从句，意为“下次……时”；what引导宾语从句。 常见的用作连词引导时间状语从句的名词词组有： • 含time的名词词组：each/every time，the first/last time，(the) next time，any time等。 • “the＋瞬间名词”表示“一……就……”： the minute，the instant， the moment等。 (1)(应用文写作之感谢信)每次我遇到困难，你都会及时出现并给予我帮助。语言无法表达我的感激之情。 ，you would turn up in time and give me a hand.Words failed to express my gratitude. (2)(2020·浙江7月，读后续写)我一看到熊咬铁丝网，我就屏住呼吸，一动也不敢动。 ，I held my breath，not daring to move an inch. Every/Each time I got into trouble The moment/minute/instant I saw the bear biting the wire fence (3)(2022·浙江1月，应用文写作)第一次在“中国——爱尔兰文化节”见到你，我就知道我们会成为好朋友。 ，I knew we would be good mates. The first time I met you at China-Ireland Cultural Festival 课文重点词块默写 1.走在人行道上 ____________________ 2.把地球敲开 ___________________ 3.地球的内部结构 __________________________ 4.以……为基础 ___________ 5.地球的组成 __________________ 6.钻很深的洞 __________________ 7.巨大的压力和热量 __________________________ 8.堵上深洞 __________________ walk on the pavement crack the Earth open the Earth’s internal structure be based on the Earth’s make-up drill very deep holes the intense pressure and heat close up a deep hole 9.氢的存储问题 ____________________ _________ 10.为……铺平道路 _______________ 11.使(问题等)容易理解 ___________ 12.带来激动人心和有启发性的发现 __________________ _____________________ 13.一层薄薄的岩石 _________________ 14.地球最深处的部分 ______________________ ______ the storage problem of hydrogen pave the way for cast light on lead to exciting and enlightening discoveries a thin layer of rock the innermost part of the Earth 15.凿进地面 _________________ 16.地壳和地幔的分界处 _______________________ __________________________ 17.稳稳地站在我们的头上 __________________ 18.不必担心 ____________ dig into the ground the boundary between the Earth’s crust and the mantle balance on our head not to worry 返 回 知识达标 基础 26 1.据报道，几乎每个成年人都拥有自己的智能手机。(it be＋v.-ed＋that...) almost every adult has his/her own smartphone. 2.在公共场所玩智能手机的人越来越多。(who引导定语从句) The number of people is increasing. 单句写作(课文佳句仿写) It is reported that who are playing smartphones in public 3.我认为人们花太长时间在智能手机上是不明智的，这有害于我们的健康。(which引导定语从句) I think it unwise for people to spend too much time on their smartphones， . 4.下次你在公共场所时，提醒人们少玩手机。(the next time引导时间状语从句) ，remind people to play smartphones less. which is harmful/does harm to our health The next time you’re in public 组句成篇　以上句子可以加上过渡词语和其他联想内容组成一篇小短文。 __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ It is reported that almost every adult has his/her own smartphone. Therefore，the number of people who are playing smartphones in public is increasing.Though smartphones can bring people much convenience，I think it unwise for people to spend too much time on their smartphones，which is harmful/does harm to our health.The next time you’re in public，remind people to play smartphones less. 返 回 本课结束 $