Unit 5 Section Ⅱ “Understanding ideas”的新知学习环节-【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）

本讲义聚焦“Understanding ideas”新知学习，以环保主题为依托，构建“词汇分层—词块应用—语法深化—语篇实践”递进式学习支架。从阅读单词“知其义”、重点单词“写其形”，到拓展构词“明其规”、高级词块“通其用”，再到部分倒装句式解析及语篇语法填空，形成完整知识链。 该资料亮点在于融合语言能力与文化意识培养，如“in harmony with”“out of control”等词块结合环保案例，助学生理解人类与自然关系；通过句式变换与仿写提升思维品质，如否定副词置于句首的部分倒装练习。课中辅助教师系统授课，课后便于学生查漏补缺，强化知识应用能力。

Section Ⅱ　“Understanding ideas”的新知学习环节 一、阅读单词——知其义 1．the halfway stage　　　　 中间阶段 2．a World Heritage Site 世界遗产地 3．native inhabitants 当地动物 4．natural habitat 自然栖息地 5．the native vegetation 当地植被 6．cause soil erosion 造成土壤侵蚀 7．develop an immunity to the virus 对病毒产生免疫力 8．a substantial number of cats 大量的猫 9．human intervention 人为干预 10．write a postscript 写上附言 11．pest control 害虫防治 二、重点单词——写其形 1．develop an appetite for the birds 以鸟为食 2．multiply the risk of cancer 大大增加患癌风险 3．in chaos 　　　　　　　　　　 一片狼藉 4．decrease sharply 骤减 5. 6．since his departure from the island 自从他离开这座岛后 7．in danger of collapsing 有倒塌的风险 8．an isolated incident 一个孤立的事件 9．owe us an explanation 欠我们一个解释 三、活用单词——悉其变 1. 2. 3. 4. 5. 四、拓展构词——明其规(依据规律串记单词) conservation：“v.(去e)＋-ation”→n. ①reserve→reservation　　　　　 预订 ②prepare→preparation 准备 五、高级词块——通其用 1．fail_to_do　　　　　 　　 未能做…… 2．in_harmony_with_ 与……和谐相处 3．take_over_ 占据；掌管 4．develop_an_appetite_for 对……产生食欲/兴趣 5．be_introduced_to 被引进；被介绍给 6．in_turn 反过来，转而；轮流，依次 7．lead_to 导致 8．out_of_control 失去控制；不受控制 9．come_up_with 提出 10．remove_..._from 把……从……去除/移走 11．decrease_from_...to_... 从……下降到…… 12．in_consequence 结果，因此 13．turn_out 结果是，证明是 14．a_substantial_number_of 大量的 15．once_and_for_all 最终地；最后地；彻底地；一次了结地 16．every_last 所有；全部 17．owe_..._to_... 归功于……；归咎于…… 1．Nor would they fail to imagine how its native inhabitants, including royal penguins, king penguins, and elephant seals, existed in perfect harmony with their natural habitat for thousands of years. 他们也不难想象出，数千年来，包括帝企鹅、王企鹅和象海豹在内的当地动物是如何与其自然栖息地完美地和谐共存的。 ★in harmony with 与……和谐相处 |用|法|感|知| ·(“环保”类写作佳句)Only when we learn to exist in harmony with nature can we stop being a threat to wildlife and to our planet. 只有学会与自然和睦共处，我们才不会成为野生生物和地球的威胁。 ·The violin was out of harmony with the rest of the instruments after I tried it out. 我试了一下后发现这把小提琴与其他乐器不协调。 [归纳点拨] (1)harmony n．　　　　 融洽，和睦；和谐；协调 out of harmony with 与……不和谐/不一致 live in harmony 和睦相处，和谐共处 coexist in harmony 和谐共生 (2)harmonious adj. 友好和睦的；协调的，和谐的 harmoniously adv. 友好和睦地；和谐地 |应|用|融|会| (1)单句语法填空/替换加黑词汇 ①It was obvious that the building was out of harmony with the surrounding environment. ②Each member of the community should develop good habits and regulate their behavior in an attempt to create a harmonious (harmony) atmosphere. ③Only when we learn to be at one with nature and animals can we realize the deepest significance of mankind's existence.in_harmony_with (2)完成句子 ④Eventually, they realized the_necessity_to_be_in_harmony_with_the_environment. 最后，他们意识到了与环境和谐相处的必要性。 ⑤If_everyone_can_live_in_harmony_with_others, our society will become more harmonious. 如果每个人都能与他人和睦相处，那么我们的社会就会变得更加和谐。 2．Even after Macquarie Island became an official nature reserve in the 1970s, the rabbits remained out of control. 即使在20世纪70年代麦夸里岛成为官方自然保护区后，兔子仍然不受控制。 ★out of control 失去控制；不受控制 |用|法|感|知| ·(2025·浙江1月高考写作)The enthusiasm of some students for filming short videos on campus is out of control as if they have forgotten their primary task of studying. 一些学生在校园内拍摄短视频的热情失控了，就好像他们忘记了学习这个首要任务。 ·(“倡议”类写作佳句)Put down your phone and you'll be in control of your time and your life again. 放下手机，你将能重新掌控自己的时间与人生。 ·While you cannot turn back the clock, you can take control of your life. 虽然你不能让时间倒流，但你可以掌控自己的生活。 [归纳点拨] lose control of　　　　　 对……失去控制 be under control 被控制住，处于控制之下 beyond (one's) control (某人)无法控制 be in control of 控制着，掌管着 be in the control of 在……的控制/掌管下 bring ...under control 把……控制住 take control of 对……进行控制 |应|用|融|会| (单句语法填空/完成句子) ①Don't worry — everything is under control. ②Without them, genome editing could be as dangerous as a car out_of control. ③The speaker made an announcement that only_when_the_fire_was_under_control_would the residents be permitted to return to their homes. 发言人宣布，只有当火势得到控制时，居民才能返回家园。 ④Students are encouraged to take_control_of_their_own_learning,_rather than just depending on the teacher. 鼓励学生掌控自己的学习，而不仅仅是依赖老师。 3．But although the virus caused the rabbit population to decrease from 130,000 to around 10,000, it also meant less food for the cats. 然而，虽然病毒使得兔子的数量从130 000降到约10 000 只，但这也意味着猫的食物变少了。 ★decrease v．(使)变小，(使)减少 n．减少；降低 |用|法|感|知| ·(“环境保护”主题佳句)As a result of global warming，the number of many animals is decreasing. 由于全球变暖，许多动物的数量正在减少。 ·(“环境保护”主题佳句)To decrease the amount of rubbish and to protect the environment, we should recycle more waste materials. 为了减少垃圾的数量和保护环境，我们应该回收利用更多的废弃物质。 ·Over the past decades, sea ice has been on the decrease in the Arctic as a result of global warming. 在过去的几十年里，由于全球变暖，北极的海冰一直在减少。 [归纳点拨] (1)decrease from ...to ...　 从……下降到…… decrease by 减少了……(表示减少的幅度) decrease in 在……方面减少 (2)a decrease in ... 在……方面的减少 on the decrease 在减少 |应|用|融|会| (单句语法填空/完成句子) ①The number of employees has decreased_to_twenty after the manager laid off some of them. ②The output of August in this company decreased by_20% compared with that of July. ③She takes exercise every day, and she has decreased her weight from 80 kilograms to 60 kilograms. ④Urban_water_waste_is_on_the_decrease due to smart irrigation systems. 城市水资源浪费因智能灌溉系统而减少。 [联想发散] increase v．& n．　 增加，增长 increase to 增加到……(表示增加后的量) increase by 增加了……(表示增加的幅度) increase in 在……方面增加 on the increase 在增加 4．This intervention is a long, much-delayed ending to a sad story, but we humans owe it to the island to give it a happy ending. 这次干预行动是这场悲剧漫长而屡被贻误的大结局，但这是我们人类应该做的，我们亏欠这座岛屿一个美好的结局。 ★owe v．应该做，对……负有……的义务，欠(情)；归功于 |用|法|感|知| ·(“感谢”类写作佳句)I would like to express my sincere thanks to you, for I should owe it to you that I have made great progress in English learning. 我想向你表达我真诚的感谢，因为我在英语学习方面取得的巨大进步归功于你。 ·(“道歉”类写作佳句)I owe you an apology for what I said this morning.Anyway, I meant no offence. 我为今天早上说的话向你道歉。无论如何，我没有冒犯的意思。 ·He owed his survival to his strength as a swimmer. 他因为水性好才幸免于难的。 [归纳点拨] (1)owe sth.to sb.＝owe sb.sth.　 欠某人某物 (2)owe (3)owing to 由于，因为 |应|用|融|会| (单句语法填空/完成句子) ①Owing (owe) to my lack of experience, I didn't do the work well. ②I must say I owe all the achievements to the encouragement and help from my colleagues and friends. ③You owe_your_friend_an_apology for what you have done. 你应该为你的所作所为向你的朋友道歉。 [名师点津]　owing to (＝because of)“由于，因为”引导原因状语，可位于句首、句中或句末。 Nor would they fail to imagine how its native inhabitants, including royal penguins, king penguins, and elephant seals, existed in perfect harmony with their natural habitat for thousands of years. 他们也不难想象出，数千年来，包括帝企鹅、王企鹅和象海豹在内的当地动物是如何与其自然栖息地完美地和谐共存的。 本句中nor放在句首，句子用了部分倒装语序，情态动词would提到了主语they之前。 具有否定意义的副词或短语never, not, nor, hardly, little, seldom, rarely, neither, scarcely, at no time, by no means, in no way, on no account 等置于句首时，句子用部分倒装语序，即将情态动词、连系动词 be 或助动词提到主语之前。 “两层级”学通用活句式 (1)通过“句式变换”弄明句式结构 ①I have never stopped in my pursuit of this purpose. →Never_have_I_stopped in my pursuit of this purpose. ②We had hardly left the dormitory the next morning when we realized we had left our map in the room. →Hardly_had_we_left_the_dormitory the next morning when we realized we had left our map in the room. ③It was this unique experience that made me understand whatever difficulty we are faced with, we should by no means give up our hope. →It was this unique experience that made me understand whatever difficulty we are faced with, by_no_means_should_we_give_up_our_hope. (2)通过“句式仿写”做到熟练运用 ④(2023·新高考Ⅰ卷写作)我从没料到我能在这次写作比赛中获得一等奖。 Never_had_I_expected_that_I_could_win_the_first_prize in the writing contest. ⑤不论做什么，都要尽力而为，绝不能半途而废。 Whatever you do, do with your might and on_no_account_should_you_give_up_ halfway.(account) 根据课文内容，在空白处填入1个适当的单词或括号内单词的正确形式。 On Macquarie Island, the green grass and bare rock of its landscape contrast dramatically, giving it a wild and natural ①beauty (beautiful)．However, in 1810 when humans arrived on the island, they ②unknowingly (unknowing) brought rats and mice.These small animals ate the birds' eggs and attacked baby birds.Cats were brought to the island to control the rats and mice.Unfortunately, the cats subsequently developed an appetite ③for the birds, too. Meanwhile, rabbits ④were_introduced (introduce) to the island as a source of food for humans.The exploding rabbit population provided plentiful food for the cats.As ⑤a result, parakeets, once large in number and native to the island, died out in 1891. In the 1970s, to remove all the rabbits from the island, a virus ⑥was_released (release) onto the island, leading to more birds being killed by the cats indirectly.The last cat there was caught in 2000.With the departure of the cats from the island, the mouse and rat population ⑦started (start) to increase.Then, in 2006, the rabbits' digging caused some land to collapse, ⑧killing (kill) a substantial number of penguins. So, I am here to participate in the programme ⑨to_tackle (tackle) this very problem with my dogs.This intervention is a long, much-delayed ending to a sad story, ⑩but we humans owe it to the island to give it a happy ending. 学科网（北京）股份有限公司 $