Unit 3 知识点 Reflection 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”分层设计，实现从词汇句型巩固到语篇综合应用的递进，适配新授课知识内化与思维品质培养。 **分层设计** |层次|知识覆盖|设计特色| |----|----------|----------| |小试牛刀|核心短语（come from等）、基础句型转换|通过短语填空（5题）和句型转换（2题），夯实单元基础词汇与语法，对应语言能力培养| |配套练习|单元核心概念（发明来源、品质等）、句式结构|单项选择（5题）强化概念理解，完成句子（5题）深化知识点综合运用，体现从单一到综合的知识巩固| |拓展思考|语篇组织与反思表达|结合指定短语写反思段落，融合问题解决与自我评估，提升思维品质与学习能力|

八年级英语上册Unit3知识点-Reflection练习 小试牛刀 A. 选用方框中的短语填空 | come from | have a hard time | be curious about | by accident | on purpose | solve problems | 1. Many great inventions __________ unexpected moments, not from planning. 2. Penicillin was discovered __________ when a scientist forgot to clean his lab. 3. Good inventors always try to __________ for people in need. 4. Before the smartphone, people __________ communicating with others far away. 5. Zhang Heng __________ the movement of stars and the earth. B. 句型转换（改为一般疑问句并作肯定或否定回答） 1. Inventions come from problems to be solved. 一般疑问句：____________________________________________________ 肯定回答：____________________ 否定回答：____________________ 2. Curiosity has led to many great inventions. 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. According to the unit, what is one thing that leads to inventions? A. Laziness. B. Problems to be solved. C. Luck only. D. Copying others. 2. Which of the following is an example of an invention that came from an accident? A. The light bulb. B. The smartphone. C. Penicillin. D. The wheel. 3. What quality helps inventors turn problems into inventions? A. Giving up easily. B. Being afraid of failure. C. Curiosity and hard work. D. Waiting for ideas to come. 4. The ice lolly was invented when a boy __________. A. followed a recipe B. left a glass of juice outside with a stick in it C. bought it from a shop D. mixed fruit with milk 5. Which sentence best describes the importance of inventions? A. Inventions make life harder. B. Inventions only help rich people. C. Inventions solve problems and improve our lives. D. Inventions are always expensive. B. 完成句子（★★） 根据本单元所学内容，用正确的词汇完成句子。 1. 发明常常来自于需要解决的问题。 Inventions often __________ __________ problems that need to be solved. 2. 好奇心可以带来新的发现。 Curiosity can __________ __________ new discoveries. 3. 有些发明是完全偶然发生的。 Some inventions happen completely __________ __________. 4. 一个好的发明家永不停止尝试和改进。 A good inventor never __________ trying and __________. 5. 这个发明的重要性在于它帮助了很多人。 The __________ of this invention is that it has helped many people. 拓展思考 写一段话（至少5句）反思你在本单元的学习收获。回答以下问题： - 你认为发明主要来自于什么？（例如：问题、好奇心、意外等） - 你从本单元的哪个发明故事中学到最多？为什么？ - 你觉得自己未来可以如何培养好奇心或解决问题的能力？ 请使用以下表达中的至少三个： come from, have a hard time, be curious about, by accident, solve problems, the importance of ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ 参考答案与解析 小试牛刀 A 1. come from 2. by accident 3. solve problems 4. had a hard time 5. was curious about 解析： 1. “来自于”用come from。 2. “偶然地”用by accident。 3. “解决问题”用solve problems。 4. “做某事有困难”用have a hard time。 5. “对……好奇”用be curious about。 小试牛刀 B 1. Do inventions come from problems to be solved? Yes, they do. / No, they don’t. 2. Has curiosity led to many great inventions? Yes, it has. / No, it hasn’t. 配套练习 A 1. B（单元核心观点：发明来自于要解决的问题） 2. C（青霉素是意外发现） 3. C（好奇心和努力帮助发明家解决问题） 4. B（冰棒的发明故事） 5. C（发明的重要性在于解决问题、改善生活） 配套练习 B 1. come from 2. bring about / lead to 3. by accident 4. stops; improving 5. importance 1 学科网（北京）股份有限公司 $