Unit 5 Section Ⅰ “Understanding ideas”的课文习读环节-【新课程学案】2025-2026学年高中英语选择性必修第二册教师用书word（外研版）

本高中英语讲义围绕“保护脆弱星球”主题，系统整合生态保护相关语言输入（听读生态话题、观看生物依赖关系视频）与输出（演讲稿写作、生态话题讨论），结合it作形式宾语语法，通过课文习读（泛读理清结构、精读理解细节）、阅读技能提升（倒叙结构分析、时间线梳理）及语言赏析（用词、修辞、环境描写）搭建学习支架，帮助学生构建从理解到表达的能力。 资料亮点在于融合文化意识（树立人类命运共同体与环保理念）和思维品质（分析生态问题因果、推断影响），通过Macquarie Island案例精读、漓江拓展阅读等任务型活动，提升语言能力。课中辅助教师引导深度理解，课后学生可借助练习与拓展阅读巩固知识，查漏补缺。

把握单元素养目标 主题意识 本单元的主题是保护我们脆弱的星球。通过了解生态系统面临的问题和发生的变化，认识到人类的生存必须依赖于良好的自然生态系统，保护生态就是保护人类，坚定人与自然和谐共处的理念，树立人类命运共同体意识。 语法项目 归纳总结it作形式宾语的用法，并能在真实语境中灵活运用。 语言输入 听 能够听懂与保护生态相关的话题，把握核心思想和细节信息。 读 能够读懂与保护生态相关的文章，增强环保意识。 看 观看介绍生态系统中所有生物之间相互依赖关系的视频，思考人类对生态系统的影响。 语言输出 写 能够掌握演讲稿的结构特点及如何运用数据引用、举例和作比较的写作方法来支撑观点。 说 能够就与保护生态相关的话题进行讨论，并能恰当使用所学词汇、句型描述不同生态系统面临的问题和发生的变化。 Section Ⅰ　“Understanding ideas”的课文习读环节 泛读课文，完成以下学习任务 (一)理清文脉结构 (二)把握主旨大意 What's the main idea of the text? A．How Macquarie Island was saved from destruction. B．The chaos caused to Macquarie Island by humans. C．A funny story about what happened on Macquarie Island. D．The ways in which an ecosystem can be protected. 答案：A 精读课文，完成以下学习任务 (一)阅读理解 1．What can we learn from the first paragraph? A．Macquarie Island is a UNESCO World Heritage Site because of its wild and natural beauty. B．The green grass and bare rock of its landscape on Macquarie Island form its beauty. C．Royal penguins，king penguins and elephant seals live in perfect harmony now. D．The writer is standing on Macquarie Island enjoying its wild and natural beauty. 2．What is mentioned in the second paragraph? A．When humans arrived on the island，they hunted the birds on the island. B．So many rats and mice were brought to the island on purpose. C．Rats and mice have been taking over the island, eating the birds' eggs so far. D．Cats were introduced to the island to control the rats and mice. 3．What was the cause of soil erosion according to the passage? A．Rabbits were introduced to the island，multiplying rapidly and digging holes. B．Parakeets, native to the island, died out because of humans' activities. C．The increasing number of cats led to more cats hunting the birds. D．Rats and mice multiplied rapidly and dug holes. 4．Which method to remove the rabbits from the island was used effectively in the 1970s? A．A large number of dogs were released. B．A large number of birds were released. C．A virus was released onto the island. D．A large number of cats were released. 5．What can we infer from the former methods of controlling invading species? A．They all brought about some negative effects to the ecosystem. B．They turned out to be quite successful in the end. C．The number of rats was under good control. D．The rabbits developed a new appetite for birds. 6．What caused some land to collapse at the beginning of the 21st century? A．The departure of the cats from the island. B．The increasing population of mice and rats. C．The digging of the rabbits. D．The death of a number of penguins. 答案：1～6　BDACAC (二)阅读表达 1．What's the author's mission on the island? Remove_the_last_remaining_invading_species. 2．How do you understand the sentence “ ...we humans owe it to the island to give it a happy ending.” at the end of the passage? It_is_humans_that_have_caused_great_damage_to_the_island_and_it_is_our_duty_to_help_it_return_to_normal. |阅|读|技|能|提|升| 关注首段；理清时间线 本文是一篇记叙文，采用了倒叙的写作手法。读文时应优先扫读第一段，因为采用倒叙结构的文章通常在第一段交代事件的结局或事件中最突出的问题。关注首段，有利于把握此类文章的主旨。其次，找到事件的起止点，分清哪些内容是倒叙，哪些内容是顺叙，进而理清文章的时间线索，把握行文脉络。 (一)赏用词之妙 1．Unfortunately, the cats subsequently developed an appetite for the birds, too. 赏析：本句中的Unfortunately表达了作者的叹惜之意；短语developed an appetite for则风趣、生动地描写了被带来捕鼠的猫却开始捕捉岛上的鸟类的情形。 2．Loose on the island, they did what rabbits do best — they multiplied rapidly and began eating the native vegetation and digging holes, which caused soil erosion. 赏析：本句中用rapidly修饰multiplied，突出了兔子的繁殖速度之快。 3．The cats in consequence turned their attention — and their stomachs — back to the native birds，killing up to 60,000 each year. 赏析：本句中使用了in consequence来表示结果，相比于简单地使用“therefore, so”等更能彰显写作功底。其他可用来灵活表达结果的还有 end up doing, only to do以及therefore doing, thus doing等。 4．So, I am here on Macquarie Island to participate in the programme to tackle this very problem. 赏析：本句中的tackle是“处理，对付”的意思，该词相比于deal with更能强调待处理的问题的难度。 [提能训练|完成句子] ① Unfortunately,_this happy story ended with a sad ending. 遗憾的是，这个快乐的故事结局却比较伤感。 ②The scientists made joint efforts, and_in_consequence_they_made_a_great_breakthrough. 这些科学家勠力同心，因此取得了重大突破。 ③I eagerly unpacked the package, only_to_find_a_broken_book_in_it. 我急切地打开包裹，结果只在里面发现了一本破损的书。 (二)赏修辞之功 But as the saying goes, “While the cat's away, the mice will play.” 赏析：此处引用了谚语“While the cat's away, the mice will play.”说明由于猫从岛上消失后，老鼠开始泛滥成灾。谚语的恰当使用使文章形象生动，富有趣味。 [提能训练|翻译下列谚语] ①When the cat runs on the roofs, the mice dance on the floors. 只要猫上了房，老鼠就在地上忙。 ② A year's plan starts with spring. 一年之计在于春。 ③Friends may meet, but mountains never greet. 山与山不相会，但人与人总相逢。 (三)赏描摹之韵(环境描写) Strong winds and stormy seas have helped sculpt its long, thin shape.The green grass and bare rock of its landscape contrast dramatically, giving it a wild and natural beauty. 赏析：此处先用Strong winds and stormy seas描写了海岛的自然环境：充斥着强风和惊涛骇浪；然后用The green grass and bare rock 描写了岛上的景色：绿草和光秃的岩石形成反差巨大的自然景观；最后用wild and natural beauty点评：海岛呈现出一种狂野和天然的美。 漓江位于桂林市区以南，是桂林最重要的自然景观之一，也是中国最美丽的河流之一。江水清澈见底，掩映在两岸碧绿的青山下，恍如一副绝美的画卷。然而，大约20年前，漓江的水质和沿江生态却是另一番景象。采石挖砂、乱砍滥伐、工业废水及生活污水排放等都破坏了漓江以及两岸的生态系统，络绎不绝的游客更是使当地环境进一步恶化。为了守护漓江的生态底色，当地政府采取了一系列措施，打响生态保卫战，最终留住了桂林山水之美。 The beautiful Li River and its amazing surrounding scenery is one of the most well-known tourist destinations in China's Guangxi Zhuang Autonomous Region.It attracts millions of domestic and foreign visitors each year.However, its reputation as a top destination has had negative effects on the river's water quality. Previously, water quality in the Li River had suffered greatly from an increasing volume of tourists, .Many tour boats contributed to the problem, too.Kitchens on board were using lots of oil, which was often thrown into the water.The growth in tourism also meant the local population rose rapidly, as well as the number of commercial and industrial enterprises.Water pollution levels increased, with more household and commercial waste ending up in the river.In order to feed more people, more chemicals were used to increase crop production.These chemicals led to severe water quality issues, causing a decrease in the number of fish species. issues.The construction of waste water treatment facilities improved the water quality and water conservation.The collection and transport of household waste was also improved.Dozens of polluting enterprises were closed or moved.The local government set up strict regulations regarding further industrial development.New rules were also introduced regarding tour boat routes and garbage disposal methods.Furthermore, the local authorities began to use the media to spread environmental awareness and encourage greater use of clean energy.With these measures, it is believed that the beauty of the Li River will be preserved for generations to come. [阅读理解] 1．What led to the water pollution in the Li River according to the passage? A．The use of clean energy. B．The reduction of the number of fish species. C．The growth of tourism and related human activities. D．The construction of waste water treatment facilities. 2．What can we infer from the passage about the local government's measures? A．They were mainly aimed at attracting more tourists. B．They were not effective enough as the pollution was still serious. C．They only focused on the construction of treatment facilities. D．They were comprehensive and covered various aspects of pollution sources. 3．What is the main idea of the passage? A．The Li River's fame as a tourist spot. B．Tourism's impacts on the Li River. C．Government's efforts to attract tourists. D．Measures to protect the Li River. 答案：1～3　CDD [素养积累] 1．由文积词汇 reputation n．　　　　　 名誉 enterprise n. 企业 comprehensive adj. 综合的 initiative n. 倡议 facilities n. 设施 regulation n. 章程 2．据文悟句式 句①本句是“many of＋关系代词”引导的非限制性定语从句。 句② with a number of measures ...为介词短语，其中that addressed ...为that引导的定语从句，修饰先行词measures。 学科网（北京）股份有限公司 $