Unit 5 A fine balance-Developing ideas-Listening and speaking课文要点讲义2026-2027学年外研版英语九年级上册

本讲义围绕“雨林保护”核心主题，系统梳理伐木定义（logging）、危害（against the law, do harm to）、雨林生态价值（地球之肺、动植物家园）、消失原因（人类活动）及保护技术（监听设备）等知识点，形成“问题-影响-解决”的逻辑链条，搭建词汇、句型（被动语态、定语从句）及语法的学习支架。 该资料突出语言能力与思维品质培养，通过高频短语中英互译、多样化练习（单选、填空、完成句子）强化语言应用，结合雨林保护案例引导学生分析问题。课中辅助教师分层教学，课后提供详细答案助力学生自主复习，有效查漏补缺，提升学习能力。

Unit 5 A fine balance Developing ideas-Listening and speaking 【课文要点】 1. Logging means cutting down trees (often for sale). 伐木意味着砍伐树木（通常是为了出售）。 - logging n. 伐木 - cut down 砍伐 - for sale 待售 - e.g. ____________ is harmful to the environment. 2. Some logging is against the law and does great harm to the environment. 一些伐木是违法的，对环境造成极大的伤害。 - against the law 违法（反义 within the law） - do harm to 对……造成伤害 - e.g. Polluting the river ____________ harm to the environment. 3. Logging is often hard to notice in rainforests. 在雨林中，伐木通常很难被注意到。 - hard to notice 很难注意到 - notice v. 注意到 - e.g. The change is so small that it's hard to ____________. 4. The rainforest is a part of nature that is important to us all. 雨林是自然的一部分，对我们所有人都很重要。 - that is important to us all 定语从句，修饰 a part of nature - e.g. Water is something ____________ is important to us all. 5. Rainforests are often called the “lungs of the earth”. 雨林常被称为“地球之肺”。 - be called 被称为 - lungs of the earth 地球之肺 - e.g. The Amazon is often called the ____________ of the earth. 6. Rainforests are home to more than half of the animals and plants on the earth. 雨林是地球上超过一半动植物的家园。 - be home to 是……的家园 - more than half 超过一半 - e.g. This forest ____________ home to many birds. 7. Rainforests are disappearing because of human activity. 雨林正在因为人类活动而消失。 - disappear v. 消失（反义词 appear） - because of 因为（后接名词/动名词） - e.g. Many animals are ____________ due to human activity. 8. Farmers cut down trees to make more space for their animals. 农民砍伐树木以便为他们的动物腾出更多空间。 - make space for 为……腾出空间 - e.g. We need to ____________ space for the new equipment. 9. Factories cut down trees to make toys. 工厂砍伐树木来制作玩具。 - factory n. 工厂（复数 factories） - e.g. ____________ produce many things we use every day. 10. In 2021, about 37,500 square kilometres of rainforests were lost. 2021年，大约37,500平方公里的雨林消失了。 - square kilometres 平方公里 - were lost 被失去了（被动语态） - e.g. Thousands of ____________ of forest were lost. 11. Logging in rainforests is usually against the law. 雨林中的伐木通常是违法的。 - e.g. Illegal logging is ____________ the law. 12. He put “ears” on trees. 他把“耳朵”放在树上。 - ears n. 耳朵（此处指监听设备） - e.g. The device listens like human ____________. 13. His invention uses an old solar panel and a microphone. 他的发明使用旧的太阳能板和麦克风。 - solar panel 太阳能板 - microphone n. 麦克风 - e.g. We can use ____________ energy to power the device. 14. The invention is attached to trees. 这个发明被安装在树上。 - be attached to 被安装在……上 - e.g. A label is ____________ to the box. 15. An app on the mobile phone starts listening. 手机上的一个应用开始监听。 - app n. 应用（= application） - e.g. You can download this ____________ for free. 16. When it hears the sound of cutting down trees, it sends an alarm. 当它听到砍伐树木的声音时，它会发出警报。 - send an alarm 发送警报 - e.g. The system will ____________ an alarm if something goes wrong. 17. The forest guards find the loggers and stop the logging. 森林警卫找到伐木者并制止伐木。 - forest guard 森林警卫 - logger n. 伐木者 - e.g. The ____________ protect the forest from illegal logging. 18. The invention has been used in many countries. 这项发明已经在许多国家被使用。 - have been used 现在完成时的被动语态 - e.g. This technology ____________ been used around the world. 19. It has saved over 2,500 square kilometres of rainforests. 它已经拯救了超过2,500平方公里的雨林。 - save v. 拯救 - e.g. We need to ____________ the endangered species. 【高频短语汇总】中英互译 1. cut down ____________ 2. ____________ 违法 3. do harm to ____________ 4. ____________ 对……造成伤害 5. hard to notice ____________ 6. ____________ 很难注意到 7. be home to ____________ 8. ____________ 是……的家园 9. because of ____________ 10. ____________ 因为 11. make space for ____________ 12. ____________ 为……腾出空间 13. square kilometres ____________ 14. ____________ 平方公里 15. be attached to ____________ 16. ____________ 被安装在……上 17. send an alarm ____________ 18. ____________ 发送警报 19. solar panel ____________ 20. ____________ 太阳能板 综合练习 一、单项选择 ( ) 1. ____________ is harmful to the environment. A. Log B. Logging C. Logs D. Logger ( ) 2. Polluting the river ____________ harm to the environment. A. do B. does C. did D. doing ( ) 3. The change is so small that it's hard to ____________. A. notice B. notices C. noticed D. noticing ( ) 4. Water is something ____________ is important to us all. A. who B. whom C. that D. whose ( ) 5. This forest ____________ home to many birds. A. is B. are C. was D. A and C ( ) 6. Many animals are ____________ due to human activity. A. appear B. disappear C. disappearing D. appeared ( ) 7. We need to ____________ space for the new equipment. A. do B. take C. make D. have ( ) 8. A label is ____________ to the box. A. attach B. attaches C. attached D. attaching ( ) 9. The system will ____________ an alarm if something goes wrong. A. send B. sends C. sent D. sending ( ) 10. This technology ____________ been used around the world. A. have B. has C. had D. having 二、根据汉语意思完成句子 1. 伐木对环境有害。 ____________ is harmful to the environment. 2. 污染河流对环境造成伤害。 Polluting the river ____________ harm to the environment. 3. 变化太小了，很难注意到。 The change is so small that it's hard to ____________. 4. 水是对我们大家都重要的东西。 Water is something ____________ is important to us all. 5. 这片森林是许多鸟类的家园。 This forest ____________ home to many birds. 6. 许多动物正因人类活动而消失。 Many animals are ____________ due to human activity. 7. 我们需要为新设备腾出空间。 We need to ____________ space for the new equipment. 8. 标签被贴在盒子上。 A label is ____________ to the box. 9. 如果有问题，系统会发送警报。 The system will ____________ an alarm if something goes wrong. 10. 这项技术已经在全世界被使用。 This technology ____________ been used around the world. 11. 非法伐木是违法的。 Illegal logging is ____________ the law. 12. 雨林被称为“地球之肺”。 Rainforests are called the “lungs of the ____________”. 13. 雨林正在因为人类活动而消失。 Rainforests are disappearing ____________ of human activity. 14. 农民砍伐树木为动物腾出空间。 Farmers cut down trees to ____________ space for their animals. 15. 这项发明拯救了数千平方公里的雨林。 This invention has saved thousands of square ____________ of rainforests. 三、选词填空（从方框中选择合适的单词填空，注意形式变化） A | log | do | notice | that | be | disappear | make | attach | send | have | 1. ____________ is harmful to the environment. 2. Polluting the river ____________ harm to the environment. 3. The change is so small that it's hard to ____________. 4. Water is something ____________ is important to us all. 5. This forest ____________ home to many birds. 6. Many animals are ____________ due to human activity. 7. We need to ____________ space for the new equipment. 8. A label is ____________ to the box. 9. The system will ____________ an alarm if something goes wrong. 10. This technology ____________ been used around the world. B | log | do | notice | that | be | disappear | make | attach | send | have | Rainforests are home to more than half of the animals and plants on the earth. However, they are 1.____________ because of human activity. 2.____________ means cutting down trees. Some logging is against the law and 3.____________ harm to the environment. It is often hard to 4.____________. Topher White invented a device 5.____________ helps protect rainforests. He put “ears” on trees. The device is 6.____________ to trees with a solar panel and a microphone. When it hears the sound of cutting, it 7.____________ an alarm. The forest guards find the loggers and stop the logging. This invention 8.____________ been used in many countries and has 9.____________ a difference. We need to 10.____________ space for nature to survive. 四、用所给词的适当形式填空 1. ____________ (Log) is harmful to the environment. 2. Polluting the river ____________ (do) harm to the environment. 3. The change is so small that it's hard to ____________ (notice). 4. Water is something ____________ (that) is important to us all. 5. This forest ____________ (be) home to many birds. 6. Many animals are ____________ (disappear) due to human activity. 7. We need to ____________ (make) space for the new equipment. 8. A label is ____________ (attach) to the box. 9. The system will ____________ (send) an alarm if something goes wrong. 10. This technology ____________ (have) been used around the world. 11. Illegal logging is ____________ (against) the law. 12. Rainforests are called the “lungs of the ____________ (earthly)”. 13. Rainforests are disappearing because of human ____________ (active). 14. Farmers cut down trees to make space for their ____________ (animal). 15. This invention has saved thousands of square ____________ (kilometre) of rainforests. 答案 一、单项选择 1. B 2. B 3. A 4. C 5. D 6. C 7. C 8. C 9. A 10. B 二、根据汉语意思完成句子 1. Logging 2. does 3. notice 4. that/which 5. is/was 6. disappearing 7. make 8. attached 9. send 10. has 11. against 12. earth 13. because 14. make 15. kilometres 三、选词填空 A 1. Logging 2. does 3. notice 4. that/which 5. is/was 6. disappearing 7. make 8. attached 9. send 10. has B 1. disappearing 2. Logging 3. does 4. notice 5. that/which 6. attached 7. sends 8. has 9. made 10. make 四、用所给词的适当形式填空 1. Logging 2. does 3. notice 4. that/which 5. is/was 6. disappearing 7. make 8. attached 9. send 10. has 11. against 12. earth 13. activity 14. animals 15. kilometres 1 学科网（北京）股份有限公司 $