Unit 4 Section B 词汇运用同步练习2026-2027学年人教版英语八年级上册

**基本信息** 八年级上册Unit 4 Section B词汇运用同步练习，分层设计清晰，通过基础词汇巩固与语篇综合应用，培养语言能力与文化意识，适配新授课知识内化需求。 **分层设计** |层次|知识覆盖|设计特色| |----|----------|----------| |练基础|词汇拼写、词形转换、句型应用|融入价值观教育（志愿服务）、传统文化（京剧角色）等情境，含教材改编题，强化基础词汇与语法规则| |练提升|语篇理解与词汇综合运用|以珊瑚礁保护科普语篇为载体，考查固定搭配（play a role）与上下文逻辑，培养思维品质与生态意识|

Unit 4 Section B 词汇运用同步练习2026-2027学年八年级上册 练基础 Ⅰ. 根据首字母及汉语提示，完成下列单词的拼写 1. [价值观教育] Volunteering can bring us joy and _______(满足) when we help others. 2. The ________(温度) in Mohe, Heilongjiang, can drop to -40℃ in winter. 3. [传统文化] Peking Opera is an important part of Chinese culture, and many foreigners like to act the ________(角色) in it. 4. [科普知识] Elephants have a very good memory. They can remember places that have food and ________(水) even after many years. 5. (教材改编题) The Internet is useful. ________, we should be careful not to spend too much time on it. (然而) Ⅱ. 用括号内所给单词的适当形式填空 6. After the rain, many beautiful ________(rainbow) appeared in the sky. 7. We should pay more attention to our ________(healthy) by eating well and exercising often. 8. The ________(deep) of the lake is about 30 meters, so it is dangerous to swim here. 9. Hard work is the key to turning your dreams into ________(real). 10. To everyone's ________(surprised), the little boy could play the violin so well. Ⅲ. 根据汉语意思完成句子，每空一词 11. 在这次活动中，每个学生都发挥了重要作用。 Every student ________ ________ ________ ________ in this activity. 12. 这道数学题和那道一样难。 This math problem is ________ ________ ________ that one. 13. 因为大雨，运动会不得不推迟。 ________ ________ the heavy rain, the sports meeting had to be put off. 14. （铜陵期末改编）我无法想象未来我们的生活会是什么样子。 I can't ________ what our life will be like ________ ________ ________. 15. 并非所有的规则都是坏的。 ________ ________ ________ are bad. 练提升 Ⅳ. 完形填空 （宿州期末改编）Coral reefs（珊瑚礁）are like the rainforests of the sea. They may be small, but they 16_____ a very important role in the ocean ecosystem（生态系统）. About 25% of all ocean fish live around coral reefs at some time in their lives. Coral reefs are not just rocks. They are made up of tiny animals called corals. These corals need warm water and lots of sunlight to grow. However, today coral reefs are in great 17_____. The ocean is getting warmer because of climate change, and this makes the corals turn white and die. Also, people throw plastic and other waste into the sea, which 18_____ the water dirty. When corals die, the fish that live there lose their 19_____. Then, bigger fish that eat those small fish will also have no food to eat. The 20_____ of the sea becomes broken. It is like a building with a weak foundation（地基）. Many countries are taking 21_____ to save the coral reefs. Scientists are teaching local fishermen how to protect the reefs while catching fish. Some areas have become protected zones（保护区）where people cannot fish or swim 22_____. We all need to do our part. Small actions, like reducing plastic use, can 23_____ a big difference. If we don't 24_____ now, we might lose these beautiful underwater gardens forever. It is our duty to keep the balance of 25_____. 16. A. lose B. play C. miss D. find 17. A. danger B. surprise C. trouble D. order 18. A. lets B. makes C. keeps D. notices 19. A. homes B. food C. energy D. air 20. A. peace B. silence C. balance D. noise 21. A. action B. place C. time D. care 22. A. quickly B. quietly C. freely D. wildly 23. A. take B. make C. get D. have 24. A. act B. help C. stop D. start 25. A. country B. nature C. city D. space 【参考答案及解析】 Ⅰ. 单词拼写 1. satisfaction (满足，名词。与 joy 并列作 bring 的宾语) 2. temperature (温度，核心气象词汇) 3. roles (角色，act the role 扮演角色，此处泛指可用复数) 4. water (水，基础词汇，注意拼写) 5. However (然而，句首首字母大写，用逗号隔开) Ⅱ. 单词适当形式填空 6. rainbows (many 后接可数名词复数) 7. health (pay attention to 后接名词，healthy 的名词形式是 health) 8. depth (定冠词 the 后接 deep 的名词形式 depth 表示“深度”) 9. reality (turn...into reality 把……变成现实，固定搭配) 10. surprise (to one's surprise 令某人惊讶的是，固定短语) Ⅲ. 完成句子 11. plays an important role / plays a role (考查 play a role 短语，主语是第三人称单数) 12. as difficult as (考查 as + adj. + as 同级比较结构) 13. Because of (后接名词短语 the heavy rain，用 Because of；若是句子则用 Because) 14. imagine; in the future (考查 imagine 的用法及“在未来”的表达) 15. Not all rules (考查部分否定，“并非所有……”) Ⅳ. 完形填空 16. B (play a role 发挥作用，固定搭配。) 17. A (in great danger 处于极大危险之中，根据后文“海水变暖导致珊瑚死亡”可知。) 18. B (make + 宾语 + 形容词 “使……变得……”，make the water dirty 使水变脏。) 19. A (珊瑚死亡，鱼失去“家”homes。) 20. C (生态系统的“平衡”balance 被破坏。) 21. A (take action 采取行动，呼应单元主题。) 22. C (在保护区里，人们不能随意 freely 游泳或捕鱼。) 23. B (make a difference 产生影响，固定搭配。) 24. A (act 采取行动，与前文 take action 呼应。) 25. B (保持“自然”nature 的平衡。) 学科网（北京）股份有限公司 $