Unit6 Section Ⅵ Developing ideas（课件PPT）-【步步高】2024-2025学年高二英语选择性必修第二册学习笔记（外研版）

该高中英语课件围绕“地球保护与火星探索”核心主题，通过速读填空、细读选择、语法填空等分层任务，构建从整体理解到细节深挖再到语言应用的学习支架，帮助学生梳理篇章结构与核心观点。 其亮点在于融合语言能力与思维品质培养，如长句结构拆解提升语法理解，选择题训练细节分析能力，重点词块默写强化词汇积累。学生能系统提升英语综合运用能力，教师可借助分层任务高效开展教学，促进深度学习。

Section Ⅵ Developing ideas Survival Unit6 Part 1　课文整体理解 Part 2　长句难句分析 整体理解 课文 3 Step 1　速读——整体理解文意 Ⅰ.明文章大意 What’s the main idea of the passage? A.The Earth is a dangerous place. B.Mars is a better planet for humans to live on. C.We need to protect Earth even if we intend to settle on other places 　such as Mars in future. D.Scientists have succeeded in growing plants on Mars. √ Ⅱ.悉篇章结构 Read the passage quickly and then fill in the blanks. Scientists are trying to find 1.____________ planets.Mars, relatively 2. to Earth with a less 3._______ environment，is the most likely choice. since the 4._____ replaceable within the next 6. years close hostile 1960s unmanned We have been sending 5. spacecraft to Mars. Sending people to Mars requires 7._____________ . It takes 8. to reach Mars through dangerous 9. radiation. On Mars,10.____________ will still be a challenge. 25 skill,courage and intelligence months solar staying alive more recently It is a long way to go,so we need to protect Earth 12. . growing environmentally Scientists’successfully 11. plants in an environment similar to that on Mars is a big step forward. Scientists are trying to find 1.____________ planets.Mars, relatively 2. to Earth with a less 3._______ environment，is the most likely choice. replaceable close hostile Step 2　细读——深度获取细节 1.What is the greatest risk to live on Earth now? A.Nuclear missiles. B.Global warming. C.Resource reduction. D.Environmental problems. √ 2.Why do people choose Mars to explore? ①Because it is relatively close to Earth. ②Because its environment is less hostile than that of other planets. ③Because it has an environment suitable for farming. ④Because it doesn’t need to be transformed to live on it. A.①② B.①③ C.①④ D.①②③ √ 3.What can we learn from the passage? A.People have sent manned spacecraft to Mars. B.Our robots have explored the Martian surface. C.Our probes have orbited Mars，not sending back any valuable 　information. D.Due to lack of technology，it is unlikely that humans will explore Mars 　in the next 30 years. √ 4.What can we infer from the last paragraph? A.The day of human migration to Mars is not far away. B.Global warming has little to do with human activities. C.We still need to protect Earth despite the solutions to the risks. D.Because of the plan to immigrate to Mars，attention to Earth is not 　important. √ 5.According to the passage，what is the style of the passage? A.Argumentation. B.Exposition. C.Narration. D.Biography. √ Step 3　读后——课文语法填空 Today，environmental problems have become the 1. (great) risk to life on Earth.Scientists are thinking of ways to lower this risk，but they are also preparing 2. the worst.One option is 3. (explore) other planets to see if we could live on them.The most likely choice is Mars，which is 4. (relative) close to Earth and has an environment less hostile than that of other planets.Mars 5._____________ (fascinate) people since ancient times，and today our interest in Martian exploration is greater than ever before.Since 6. 1960s，we have been sending unmanned spacecraft to Mars. greatest for to explore relatively has fascinated the 7. (encourage) by discoveries over the years，space agencies of various countries are planning manned missions to Mars that could take place within the next 25 years.There is no doubt 8.__________ humankind is drawn towards Mars，with dreams of making it our second home.However，9. (send) people there will require all the skill，courage and 10. (intelligent) of the human race.For now，human settlement of Mars is still decades away.Until we are finally able to live on another planet，we need to take much better care of our own. Encouraged that 返 回 sending intelligence 难句分析 长句 14 1.In the 1960s and 1970s，the (great) fear was that the human race，and possibly all (advance) life forms on the planet，could (wipe) out by nuclear missiles，just at the push of a button.(P90 Para.1) 结构分析：此句为　　　　　句。that引导　　　从句；wipe out意为“　　　　　　　　”。 汉语翻译：_____________________________________________________ _______________________________________________________________ _______________________________________________________________ Ⅰ.补句子　析结构 greatest advanced 主从复合 be wiped 表语 彻底摧毁，消灭 　　　　　在20世纪60、70年代，最大的恐惧是，只需按下一个按钮，人类——甚至可能是地球上所有的高级生命体——就可能被核导弹彻底毁灭。 2.One option is to explore other planets to see if we could live 　　 them. (P90 Para.2) 结构分析：此句为　　　　　句。动词不定式短语to explore other planets作　　　；动词不定式短语to see if we could...作　　　　　；if引导　　　从句。 汉语翻译：_____________________________________________________ 主从复合 on 目的状语 表语 宾语 　　　　　一种选择是探索其他星球，看看我们能否在上面生活。 3.The most likely 　　　(choose) is Mars，which is 　　　　　(relative) close to Earth and has an environment less hostile than 　　　 of other planets.(P90 Para.2) 结构分析：此句为　　　　　句。which引导　　　　　　　从句，修饰名词　　　。 汉语翻译：_____________________________________________________ _______________________________________________________________ relatively choice that 主从复合 非限制性定语 Mars 　　　　　最有可能的选择是火星，它离地球相对较近，环境不像其他行星那么恶劣。 4.Encouraged by 　　　　　　(discovery) over the years，space agencies of 　　　　(vary) countries are planning manned missions to Mars that could take place within the next 25 years.(P91 Para.3) 结构分析：此句为　　　　　句。过去分词短语Encouraged by...years作 　　　　　；that引导　　　从句，修饰名词　　　　。 汉语翻译：_____________________________________________________ _______________________________________________________________ discoveries various 主从复合 原因状语 定语 missions 　　　　　受到多年来这些发现的鼓舞，各国航天机构正计划在未来25年内进行载人飞船登陆火星的任务。 5.While the Moon can 　　　　　　　　(reach) within days，it would take (month) to reach Mars，travelling through dangerous solar radiation.(P91 Para.4) 结构分析：此句为　　　　　句。While引导　　　　　从句，意为“　　　”；主句中it作　　　　　，不定式短语作　　　　　　，travelling through dangerous solar radiation为现在分词短语作　　　　。 汉语翻译：_____________________________________________________ _______________________________________________________________ be reached months 主从复合 让步状语 尽管 形式主语 真正的主语 伴随状语 　　　　　到达月球只需要几天的时间，而到达火星却需要数月的时间，并且其间要经历危险的太阳辐射。 6.And even if the first settlers do reach Mars 　　　　(safe)，they may not be able to return to Earth—ever.(P91 Para.4) 结构分析：此句为　　　　　句。even if引导　　　　　从句，意为 “　　　　　　”；do强调谓语动词　　　。 汉语翻译：_____________________________________________________ _______________________________________________________________ safely 主从复合 让步状语 即使，尽管 reach 　　　　　而且即使第一批开拓者安全抵达火星，他们可能永远无法再回到地球。 7.Although the two-year experiment was not 　　 success，it did provide us 　　　 a better understanding of how humans might be able to live on another planet.(P92 Para.4) 结构分析：此句为　　　　　句。Although引导　　　　　从句；did强调谓语动词　　　　；how引导　　　从句。 汉语翻译：_____________________________________________________ _______________________________________________________________ a with 主从复合 让步状语 provide 宾语 　　　　　尽管为期两年的实验并不成功，但它确实让我们更好地了解了人类如何能够在另一个星球上生活。 8.Until we are finally able to live on another planet，we need to take much 　　　(good) care of our own.(P92 Para.5) 结构分析：此句为　　　　　句。until引导　　　　 从句，意为“___ 　　　　”。 汉语翻译：_____________________________________________________ _______________________________________________________________ better 主从复合 时间状语 直 到…… 　　　　　在我们最终能够生活在另一个星球上之前，我们需要更好地保护好我们自己的星球。 Ⅱ.研典句　学用法 There is no doubt that... There is no doubt that humankind is drawn towards Mars，with dreams of making it our second home.(P91 Para.4) 毫无疑问，人类被火星所吸引，梦想着把它作为我们的第二家园。 结构分析：that引导同位语从句，对名词doubt作进一步解释。 • 　　　　　　　　　　　　毫无疑问…… There is (some) doubt whether...对……持有疑问 • I doubt whether/if...我怀疑是否…… I don’t doubt that...我确信…… There is no doubt that... There is no doubt about... (1)毫无疑问，熬夜会导致过度焦虑。 　　　　　　　　　　 staying up can result in over-anxiety. (2)运动会是否会如期举行还有些疑问。 the sports meeting will be held as scheduled. (3)我们毫不怀疑他的工作能力，但我们怀疑他是否有足够的激情。 We have no doubt about his working ability，_______________________ . There is no doubt that There is some doubt whether but we doubt whether/if he has enough passion 课文重点词块默写 1.彻底摧毁，消灭 2.核导弹 3.按一下按钮 4.环境问题 5.用……取代/代替…… 6.可再生能源 7.做好最坏的打算 8.努力 _________ ______________ _____________________ ______________________ ______________ ________________ ____________________ ____________ wipe out nuclear missile renewable energy prepare for the worst at the push of a button environmental problems replace...with... make efforts 9.搜索，搜寻 10.举行；发生 11.太阳辐射 12.即使；尽管 13.被设计来做某事 14.由……构成，由……组成 15.向某人提供某物 16.成功做某事 __________ __________ ______________ _______ ___________________ __________ __________________ ___________________ search for take place solar radiation even if be designed to do sth consist of provide sb with sth succeed in doing sth 17.各种各样的 18.与……类似 19.在此期间，与此同时 20.对……有影响 21.更好地照顾…… ___________ ____________ _______________ ________________ ________________________ a variety of be similar to in the meantime have an effect on take much better care of... 返 回 本课结束 $