Unit 5 A delicate world Understanding ideas 课文语段知识点梳理及语段语法填空 课件2025-2026学年高中英语外研版选择性必修第二册

该高中英语课件围绕Unit 5 "A delicate world"中麦夸里岛生态主题，系统梳理词汇（如inhabitant、natural habitat）、短语（in perfect harmony with、take over）及语法知识，通过段落词汇解析、语法填空（基础篇与提升篇）、翻译练习到重点词块默写的学习支架，帮助学生逐步构建语言知识网络。 其亮点在于融合语言能力与思维品质培养，通过生态问题（入侵物种影响、生态恢复）的语篇分析，结合语法填空、翻译等多样练习提升语言理解与表达能力，引导学生分析生态失衡原因，培养批判性思维。结构化的词块总结和分层练习，助力学生掌握学习策略，教师可高效开展语言教学与思维训练。

Unit 5 A delicate world Understanding ideas language points 1. halfway between 2.sculpt 2. contrast dramatically 3. inhabitant 4. natural habitat 5. exist in 6.in perfect harmony with 在...中间 vt. 熟词生义 使具有某种形状 形成鲜明对比 居民 自然栖息地 存在于..../寓于 与...和谐共存 第一段 2 西南太平洋 狂风与汹涌的海浪 世界遗产地 皇家企鹅 象海豹 South-west Pacific Ocean strong winds and stormy seas World Heritage Site royal penguins elephant seals 3 第1段（语段语法填空） I am standing on Macquarie Island, in the South-west Pacific Ocean, halfway between Australia and Antarctica. Strong winds and 1.________(storm) seas have helped sculpt its long, thin shape.The green grass and bare rock of its landscape contrast2._____________ (dramatic), giving it a wild and natural beauty.No visitor would think 3.____ surprising that the island is a UNESCO World Heritage Site.Nor would they fail 4._________ (imagine) how its native inhabitants, including royal penguins, king penguins, and elephant seals, existed in perfect harmony 5.________ their natural habitat for thousands of years. stormy dramatically it to imagine with 绿色的草地和裸露的岩石在地貌上形成了鲜明的对比，赋予了它一种原始的自然之美。 The green grass and bare rock of its landscape contrast dramatically, giving it a wild and natural beauty. 翻译 5 recent history a different story tragic story unknowingly brought take over attack baby birds control the rats and mice subsequently develop an appetite for 近期的历史 不同的故事 悲剧故事 无意中带来 接管 攻击幼鸟 控制老鼠 随后 对...产生食欲 第2段 6 a) The island’s recent history is quite ________. (tragedy) b) Humans ____________ brought rats to the island. (know) c) These pests quickly __________ the island. (take over) d) Cats _____________ developed a taste for birds. (subsequent) e) They __________ an appetite for hunting penguins. (develop) 2. 正确形式填空 tragic unknowingly took over subsequently developed 7 第3段 be introduced to a source of food multiply rapidly native vegetation dig holes soil erosion exploding rabbit populatiuon plentiful food in turn die out 引入 食物来源 飞速繁殖 本土植被 挖洞 土壤侵蚀 激增的兔子数量 充足的食物 相应地，转而；依次 灭绝 第3段（语段语法填空） Meanwhile, rabbits were introduced to the island 1._____ a source of food for humans.Loose on the island, they did what rabbits do best -they multiplied 2._________(rapid) and began eating the native vegetation and3._______ (dig) holes, which caused soil 4._________(erode).The exploding rabbit population provided5._________ (plenty) food for the cats, meaning that the number of cats also increased.This in turn led 6._______ more cats hunting the birds. The end result was that parakeets, once large in number and native to the island, died out in 1891. as rapidly digging erosion plentiful to 第4段 nature reserve in the 1970s out of control come up with a plan remove… from… with this goal in mind release a virus decrease from...to... in consequence 自然保护区 20世纪70年代 失去控制 想出计划 把……从……移除 怀着这个目标 释放病毒 从……减少到…… 结果 第4段（语段语法填空） Even after Macquarie Island became an official nature reserve in the 1970s, the rabbits remained out of control. Experts felt 1._____ necessary to come up with a plan to remove all the rabbits 2._______ the island. With this goal in mind, a virus3.__________ (release) onto the island. 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. The cats in consequence turned their attention -and their stomachs - back to the native birds, 4._________(kill) up to 60, 000 each year. it from was released killing 第5段 as the saying goes While the cat’s away, the mice will play departure it turned out that… develop an immunity to explode once again a substantial number of make it clear that once and for all sth. needs doing 俗话说 猫儿不在，老鼠作怪 离开 证明是，结果是 对……产生免疫 再次激增 大量地 使...清楚明白 彻底地 某事物需要被…… a) “While the cat’s away, the mice will play” is a common ________. (say) b) With the __________ of the cats, rats increased. (depart) c) Rabbits developed _________ to the virus. (immune) d) Their numbers ________ once again. (explode) e) This made ___ substantial number of penguins die. saying departure exploded a immunity 第5段（单句语法填空） 13 第6段 participate in tackle very invading species come in every last intervention owe it to...to do sth. postscript pest-free ecology on the road to recovery 参加，参与 应付，处理，解决（难题或局面） 熟词生义 adj.（特指人或事物）正是的，恰好的，侵入性物种 参与，涌入 (某群体中的）每一个，全部 干预，介入 (认为）应该为……做某事 n.附言 adj.没有害兽/鸟/虫的 生态；生态学 走上复苏之路 课文语法填空(基础篇） Macquarie Island was a beautiful place 1.　　　　　 its native inhabitants，including royal penguins，king penguins，and elephant seals，existed 2.　　 harmony with their natural habitat for thousands of years.However，in 1810，humans 3. (arrive) on the island with rats and mice.These small animals quickly took over the island，eating birds’ eggs and 4. (attack) baby birds.Cats 5._______ (bring) to control the rats and mice，but they also liked eating birds.Meanwhile，rabbits were introduced to the island but the exploding rabbit population provided plentiful food for cats， where in arrived attacking were brought meaning that the number of cats also increased 6. (rapid).This in turn led to more cats hunting birds.The end result was that parakeets，once large in number and native to the island，died 7. in 1891. A virus 8. (release) onto the island caused the rabbit population to decrease，but the cats，without enough rabbits to eat，killed native birds for food.Although all the cats on the island had been caught by 2000，rats and mice exploded once again.Besides，the rabbits’ 9. (dig) caused some land to collapse and killed many penguins. rapidly out released digging A programme was started to tackle this problem.This 10.___________ (intervene) is a long，much-delayed ending to a sad story，but we humans owe it to the island to give it a happy ending. intervention 课文语法填空(提升篇） Macquarie Island is 1.  ___  beautiful and harmonious place.However，in 1810，humans arrived on the island，unknowingly 2. ________  (bring) rats and mice.The small animals ate birds' eggs and attacked baby birds.People brought cats to control them，but they developed an appetite 3. ____ the birds，too.People also regarded rabbits as food，but they multiplied so rapidly 4. _______ they led to soil erosion.The rabbits supplied enough food to the cats，5.  ________  caused more cats. a  bringing for  that which To control the rabbits，a virus 6.  __________(release) onto the island，which caused the rabbit population 7. _________ (decrease) rapidly.As a result，the food was less for the cats，so they started to eat the birds again.In the 1980s，people used dogs and 8.________ (trap) to catch them.The rats and mice began to increase.Their population 9.________  (explode) again.To solve the problem 10.________   (complete)，people dropped poison on the island and removed all the invading species.In 2014，the island's ecology started to recover. was released  to decrease traps exploded  completely  课文重点词块默写 1.世界遗产地 2.与……和睦相处，与……协调一致 3.占领；接管(公司)；取代；占上风 4.对……产生兴趣 5.被引进 6.土壤侵蚀，水土流失 7.……的数量 8.反过来 __________________ _______________ _________ _____________________ _______________ ___________ _____________ _______ World Heritage Site in harmony with take over be introduced to soil erosion the number of in turn develop an appetite for 9.导致，带来 10.灭绝，绝种 11.自然保护区 12.不受控制；失去控制 13.想出，提出(计划、想法等) 14.心中有了这个目标 15.结果，因此 16.随着……的离开 17.原来是；结果是；证明是 _______ _______ _____________ _____________ ____________ ____________________ ______________ ____________________ ________ die out nature reserve out of control lead to with the departure of turn out come up with with this goal in mind in consequence 18.再一次 19.大量 20.彻底地；最终地 21.参加 22.把……归功于 23.在恢复的路上 __________ ______________________ _______________ _____________ ________ _____________________ once again a substantial number of once and for all participate in owe...to on the road to recovery $