Unit3 知识点-Developing ideas-Listening and speaking练习 2025-2026学年外研版八年级英语上册

**基本信息** 该同步练习通过“小试牛刀-配套练习-拓展思考”三层设计，实现从基础词汇句型到综合语篇应用的知识巩固，适配新授课分层教学需求，提升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（by accident等）及句型转换|短语填空与句型转换结合，夯实语言基础| |配套练习|听力阅读细节理解（发明相关事实）|单项选择（★）聚焦关键信息，检测理解能力| |拓展思考|语篇写作与思维表达（意外发明介绍）|写作任务融合多短语运用，培养综合语言运用与逻辑思维|

八年级英语上册Unit3知识点-Developing ideas-Listening and speaking练习 小试牛刀 A. 选用方框中的短语填空 | by accident | on purpose | never stop | learn widely | miss out | stick to | 1. Penicillin was discovered __________ when Dr Fleming forgot to clean his lab. 2. To become a good inventor, you should __________ trying and improving. 3. Some inventions are created __________, but others happen by chance. 4. The exhibition is great. Don’t __________ on it! 5. Good inventors __________ from different fields and never give up. B. 句型转换（改为一般疑问句并作肯定或否定回答） 1. Penicillin was discovered by accident. 一般疑问句：____________________________________________________ 肯定回答：____________________ 否定回答：____________________ 2. Arthur Fry found the perfect use for the weak glue. 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 is the main purpose of the news programme? A. To encourage young people to become inventors. B. To introduce some different invention exhibitions. C. To invite people to come and see an invention exhibition. D. To explain the history of some inventors and inventions. 2. Who discovered penicillin by accident? A. Arthur Fry. B. Spencer Silver. C. Dr Alexander Fleming. D. The Wright Brothers. 3. What did Spencer Silver invent? A. A strong glue. B. A weak type of glue. C. The ice lolly. D. The aeroplane. 4. How did the boy invent the ice lolly? A. He mixed fruit juice. B. He left a glass of juice outside with a stick in it. C. He bought it from a shop. D. He followed a recipe. 5. What is one quality of a successful inventor according to the exhibition? A. Never stop learning. B. Always work alone. C. Never make mistakes. D. Keep everything secret. 拓展思考 写一段话（至少5句）介绍一个你知道的“意外发明”（如青霉素、便利贴、冰棒等），或者你自己曾经偶然发现的有用小技巧。说明这个发明是如何意外出现的，它有什么用处，以及你从这个故事中学到了什么。请使用以下表达中的至少三个： by accident, on purpose, never stop, learn widely, miss out, stick to ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ 参考答案与解析 小试牛刀 A 1. by accident 2. never stop 3. on purpose 4. miss out 5. learn widely 解析： 1. “意外发现”用by accident。 2. “永不停止尝试”用never stop。 3. “故意”用on purpose。 4. “错过”用miss out。 5. “广泛学习”用learn widely。 小试牛刀 B 1. Was penicillin discovered by accident? Yes, it was. / No, it wasn’t. 2. Did Arthur Fry find the perfect use for the weak glue? Yes, he did. / No, he didn’t. 配套练习 A 1. C（根据听力题目，主要目的是邀请人们参观展览） 2. C（弗莱明发现了青霉素） 3. B（斯宾塞发明了一种弱胶水） 4. B（男孩把果汁放在外面冻成了冰棒） 5. A（展览中提到“never stop learning”） 拓展思考（示例） One famous unexpected invention is the ice lolly. A boy left a glass of juice outside with a stick in it. The next day, he found it was frozen by accident. He tasted it and it was delicious! He didn’t make it on purpose, but it became a popular treat. This story teaches me that good things can happen by accident. We should never stop trying new things. Also, we should learn widely and not miss out on small ideas. 1 学科网（北京）股份有限公司 $