Unit5知识点-Presenting ideas练习 2026-2027学年外研版英语九年级上册

**基本信息** 本练习以“小试牛刀-配套练习-拓展思考”分层设计，通过词汇运用、句型转换到语篇写作的递进路径，系统巩固Presenting ideas知识点，培养语言能力与思维品质。 **分层设计** |层次|知识覆盖|设计特色| |----|----------|----------| |小试牛刀|核心短语（如include...）、基础句型转换|5题短语填空+3题句型转换，聚焦单一知识点机械操练| |配套练习|生态系统概念、词汇语法综合应用|5题单选（★）辨析概念+5题完成句子（★★）融合词汇语法，难度梯度清晰| |拓展思考|语篇结构与综合表达|撰写研究报告，需整合include等核心表达，体现从语言知识到思维应用的提升|

九年级英语上册Unit5知识点-Presenting ideas练习 小试牛刀 A. 选用方框中的短语填空 | include living and non-living things | suffering from | play an important role | is undoubtedly helpful to | provides hope for | 1. An ecosystem __________ such as plants, animals, water, soil and air. 2. Rainforests are __________ deforestation, which destroys many animals' homes. 3. National parks __________ in protecting endangered species. 4. Saving one species __________ the survival of the whole ecosystem. 5. The growth of the panda population __________ other endangered animals. B. 句型转换（改为一般疑问句并作肯定或否定回答） 1. People’s efforts have helped keep ecosystems balanced. 一般疑问句：_________________________________________________ 肯定回答：_________________ 否定回答：_________________ 2. Pollution is a big problem for the oceans. 一般疑问句：_________________________________________________ 肯定回答：_________________ 否定回答：_________________ 3. The panda population has increased in recent years. 一般疑问句：_________________________________________________ 肯定回答：_________________ 否定回答：_________________ 配套练习 A. 单项选择（★） 从A、B、C、D中选择最佳答案。 1. Which of the following is a non-living thing in an ecosystem? A. Panda. B. Bamboo. C. Water. D. Bird. 2. The Giant Panda National Park was created to ______. A. attract tourists B. protect pandas and their habitat C. plant more bamboo D. build research centres 3. Farmers returned farmland to forests so that ______. A. they could grow more crops B. pandas could have more space and food C. they could move to cities D. they could hunt more animals 4. The word “undoubtedly” in the passage means ______. A. 怀疑地 B. 毫无疑问地 C. 可能地 D. 偶尔地 5. A research report on ecosystems should include ______. A. only the problems B. elements, problems and protection efforts C. only the solutions D. only the names of animals B. 完成句子（★★） 根据本单元知识，用正确的词汇完成句子。 1. 今天我们要讨论的是热带雨林——一个对我们所有人都很重要的生态系统。 Today we’re going to talk about the rainforest, an ecosystem that is __________ __________ us all. 2. 热带雨林正遭受着砍伐和污染的威胁。 The rainforest is __________ __________ deforestation and pollution. 3. 建立国家公园在保护生态系统中发挥了重要作用。 __________ national parks has __________ an important __________ in protecting ecosystems. 4. 保护大熊猫无疑有助于整个生态系统的生存。 Protecting pandas is __________ helpful to the __________ of a whole ecosystem. 5. 大熊猫数量的增加为其他濒危动物带来了希望。 The increase in the panda __________ provides __________ for other endangered animals. 拓展思考 写一篇简短的研究报告（至少5句）介绍一个生态系统（如湿地、森林、海洋等）。内容包括：该生态系统在哪里、由什么组成、面临什么问题、人们如何保护它、以及保护的结果。使用 include, suffer from, play an important role, be helpful to, provide hope for 等表达。 _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ 参考答案与解析 小试牛刀 A 1. includes living and non-living things 2. suffering from 3. play an important role 4. is undoubtedly helpful to 5. provides hope for 小试牛刀 B 1. Have people's efforts helped keep ecosystems balanced? Yes, they have. / No, they haven’t. 2. Is pollution a big problem for the oceans? Yes, it is. / No, it isn't. 3. Has the panda population increased in recent years? Yes, it has. / No, it hasn’t. 配套练习 A 1. C 2. B 3. B 4. B 5. B 配套练习 B 1. important to 2. suffering from 3. Creating; played; role 4. undoubtedly; survival 5. population; hope 拓展思考（示例） Today we're going to talk about the wetlands, an ecosystem that is important to us all. Wetlands include water, soil, plants and many animals like birds and fish. They are suffering from pollution and land development. People have played an important role in protecting wetlands by creating nature reserves and cleaning up rivers. These actions are undoubtedly helpful to the survival of many species. The increase in bird populations provides hope for other endangered ecosystems. We must continue our efforts. That’s our responsibility. Let's work together. Yes, we can. Thank you. 1 学科网（北京）股份有限公司 $