Unit3知识点-Presenting ideas练习 2025-2026学年外研版八年级英语上册

**基本信息** 初中英语八年级上册Unit3同步练，以"小试牛刀-配套练习-拓展思考"三级分层设计，实现从词汇句型到语篇应用的知识巩固，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|短语运用（如have a hard time）、句型转换|5题短语填空+2题句型转换，聚焦单一知识点基础巩固| |配套练习|发明展示要素（名称/问题/材料等）、综合句型|5题单选（★）辨析核心概念+5题完成句子（★★）整合短语与语法| |拓展思考|发明介绍语篇构建|结合指定短语（至少3个）完成6句写作，融合问题分析与解决方案表达|

八年级英语上册Unit3知识点-Presenting ideas练习 小试牛刀 A. 选用方框中的短语填空 | have a hard time | be curious about | spend years doing | make it out of | be able to | sense objects | 1. Before the invention of the light bulb, people __________ seeing at night. 2. Thomas Edison __________ electricity and tried thousands of materials. 3. The Wright brothers __________ studying flight before they succeeded. 4. Easton __________ a robotic arm __________ plastic blocks and fishing line. 5. A smart walking stick can __________ nearby and shake to warn the user. B. 句型转换（改为一般疑问句并作肯定或否定回答） 1. People wanted something to help them fly. 一般疑问句：____________________________________________________ 肯定回答：____________________ 否定回答：____________________ 2. The inventor decided to share his design online for free. 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. What should you include on a display board about an invention? A. Only the inventor’s name. B. The invention name, inventor, problem and solution. C. The price of the invention. D. Only pictures. 2. Which question can help you describe the problem before an invention? A. What colour is it? B. What did people wish for? C. How much did it cost? D. Who invented it? 3. If you want to describe the inventor, you can say: A. “It was made out of wood.” B. “He was curious about the stars.” C. “Once it senses heat, it starts beeping.” D. “People had a hard time moving around.” 4. Which phrase is useful for describing the materials of an invention? A. They wished... B. The answer was to... C. He made it out of... D. Finally he succeeded. 5. What is a good way to describe the solution in a display board? A. “People wanted something lighter.” B. “The answer was to invent a flying machine.” C. “He spent years studying physics.” D. “The inventor was very brave.” B. 完成句子（★★） 根据展示板制作的提示，用正确的词汇完成句子。 1. 人们希望有一种能在黑暗中发光的东西。 People __________ something that could __________ in the dark. 2. 发明家对自然充满好奇，花了多年时间研究鸟类。 The inventor was __________ __________ nature and __________ years __________ birds. 3. 他只用竹子和纸就造出了第一个风筝。 He __________ the first kite __________ __________ bamboo and paper. 4. 一旦它感应到烟雾，就会开始发出警报声。 __________ it __________ smoke, it starts to __________ an alarm. 5. 答案是发明一种不需要电的灯。 The __________ was to __________ a lamp that doesn’t need electricity. 拓展思考 选择一个你感兴趣的发明（可以是历史上的，也可以是现代的），按照展示板的框架写一段介绍（至少6句）。内容包括： - 发明名称 - 人们遇到了什么问题？ - 发明者是谁？他/她有什么特点（如好奇心、坚持不懈等）？ - 用了什么材料？如何工作的？ - 这个发明的重要性是什么？ 请使用以下表达中的至少三个： have a hard time, be curious about, spend years doing, make it out of, be able to, once it senses, the answer was to ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ 参考答案与解析 小试牛刀 A 1. had a hard time 2. was curious about 3. spent years 4. made; out of 5. sense objects 解析： 1. “做某事有困难”用have a hard time doing。 2. “对……好奇”用be curious about。 3. “花多年做某事”用spend years doing。 4. “用……制造”用make sth out of。 5. “感应物体”用sense objects。 小试牛刀 B 1. Did people want something to help them fly? Yes, they did. / No, they didn’t. 2. Did the inventor decide to share his design online for free? Yes, he/she did. / No, he/she didn’t. 配套练习 A 1. B（展示板应包含发明名称、发明者、问题和解决方案） 2. B（描述问题可用“People wished for...”） 3. B（描述发明者可用“He was curious about...”） 4. C（描述材料用“made it out of”） 5. B（描述解决方案用“The answer was to...”） 配套练习 B 1. wished; shine/glow 2. curious about; spent; studying 3. made; out of 4. Once; senses; sound/raise 5. answer; invent 拓展思考（示例） My favourite invention is the smart walking stick for blind people. Before this invention, blind people had a hard time moving around without help. They often bumped into objects. A boy named Shantanu was curious about how to help them. He spent years studying sensors and electronics. He made the stick out of light materials so it was easy to carry. Once it senses an object nearby, it starts to shake and warn the user. The answer was to invent a simple but clever tool. This invention helps blind people walk more safely. I think curiosity and hard work made this possible. 1 学科网（北京）股份有限公司 $