Unit 3 语法讲练一【前缀-re】2026-2027学年仁爱科普版九年级英语上册

**基本信息** 以“前缀re-”为核心，构建“定义-分类-考点-应用”四维体系，融合环保主题实现语言能力与思维品质协同培养。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |语法讲解|核心定义+3分类|拼写规则（直接加re-、e结尾处理）、词义辨析（reuse/recycle）、时态变化（三单/过去式）|从基础含义（再/重新）到环保专属（循环利用）再到拓展词义（更新/重塑），层层递进| |基础变形|30题默写|词根派生法、词性转换规律|覆盖原词→派生词→名词/时态变形全链条| |语法应用|22题填空+18题单选|语境匹配法、易混词区分（reduce/rebuild）|结合环保场景训练re-动词时态与语态| |综合拓展|3篇短文+20题翻译|写作万能搭配（reuse cloth bags等）|通过语篇巩固“词-句-篇”应用逻辑|

Unit 3 A Green Earth，A Better Home Grammar in Use：【前缀 re-】语法讲解（一） 一、核心定义 前缀 re- 是单元核心构词法，中考高频考点，固定含义：再、重新、反复、回收 1. 基础构成规则：re- + 实义动词 = 全新动词，读音多为 /riː/，重音常落在前缀上 2. 两层核心词义： ① 动作重复发生：再次、重新做一次原动作 ② 循环再利用（本单元环保专属词义）：回收、二次使用 3. 补充区分：仅加在动词前，不能搭配形容词/名词；少数单词本身含re（reduce），不属于构词前缀，需单独记忆 二、分类1：re- 表“重新、再次”（通用基础词义） 拼写变形规则（易错必背） 1. 绝大多数动词直接加 re-，单词拼写无变化 例：write → rewrite；visit → revisit；build → rebuild 2. 以 e 结尾动词同样直接加 re-，无需删减字母 例：open → reopen；create → recreate 3. 不规则动词加 re- 后，过去式、过去分词仍遵循原动词变形规则 例：build（built）→ rebuild（rebuilt）；write（wrote/written）→ rewrite（rewrote/rewritten） 4. 固定特例：reduce 本身是独立单词，不能拆成 re+duce，词义“减少”，和re-前缀含义无关，单独背诵 高频基础词表 原动词 音标 中文释义 re-派生词 派生词释义 实用例句 write /raɪt/ 书写 rewrite 重写，改写 You need to rewrite your article with fewer plastic examples. visit /ˈvɪzɪt/ 参观，游览 revisit 重游，再次参观 I plan to revisit the environmental museum this weekend. build /bɪld/ 建造 rebuild 重建，重修 Volunteers rebuild polluted wetland every year. think /θɪŋk/ 思考 rethink 重新反思，重新考虑 We should rethink our bad waste habits. open /ˈəʊpən/ 打开 reopen 重新开放 The recycling station will reopen after repairs. take /teɪk/ 采取 retake 重新采取（行动） We retake measures to cut river pollution. 三、分类2：re- 表“循环、二次利用”（本单元环保核心词义） 构词搭配（环保作文必考，写作高频词） 1. use /juːz/ 使用 → reuse 重复使用（物品不加工，直接二次利用） 例：We reuse cloth shopping bags instead of throwing them away. 2. cycle /ˈsaɪkl/ 循环 → recycle 回收再加工（废旧物品粉碎再造新品） 例：Factories recycle waste paper to make new exercise books. 词义辨析 reuse VS recycle • reuse：简单重复使用，不经过工厂加工（旧塑料袋反复装东西、玻璃瓶存杂物） • recycle：统一回收、工厂深加工，转化为全新产品（废纸、塑料瓶、金属易拉罐） 四、分类3：拓展 re- 表“更新、重塑”写作加分词汇 原动词 re-单词 释义 短语搭配 new（v.更新） renew 更新；再次发起 renew environmental rules 更新环保条例| create（v..创造） recreate 重塑，打造 recreate clean lakes 重塑干净湖泊 五、核心语法考点 1. 词性与时态变化 re-构成的单词全部为实义动词，句子中可作谓语，随时态、人称、语态变形 1）一般现在时三单：reuse → reuses；recycle → recycles 例：He reuses old glass bottles at home. 2）一般过去时/过去分词：规则动词直接加ed；不规则动词随词根变化 例：reuse → reused；rebuild → rebuilt；rewrite → rewrote 3）被动语态结构：be + re动词过去分词 例：Waste paper is recycled every day.（废纸每天被回收加工） 2. 写作万能固定搭配（环保话题必背） 1. reuse cloth bags 重复使用布袋 2. recycle paper and cans 回收纸张与易拉罐 3. rethink daily waste habits 反思日常浪费习惯 4. rebuild green wetlands 重建绿色湿地 5. renew environmental protection plans 更新环保方案 6. retake anti-pollution actions 重新采取防污染行动 3. 易混易错区分 1. reduce：独立单词，意为“减少”，不属于re-构词，不可拆分 2. rebuild 不规则变形：原形rebuild，过去式/过去分词rebuilt，无rebuilded形式 3. 不可重复叠加re：无rereuse此类单词，一次前缀即可 4. 写作万能句型 1. We can reuse daily waste to reduce plastic pollution. 我们可以重复利用生活垃圾，减少塑料污染。 2. Everyone should rethink their lifestyle to protect the earth. 每个人都应该反思自己的生活方式，保护地球。 3. Old metal cans are recycled to make new daily goods. 废旧金属易拉罐会被回收，制成全新日用品。 六、易混后缀对比 re-（动词前缀） VS -en（动词/形容词后缀） 1. re-：加在动词前，表“再次、循环”，只生成动词 use → reuse；cycle → recycle 2. -en：加在形容词后变动词（使…）；加物质名词变形容词 wide → widen；wood → wooden Grammar in Use：【前缀 re- 】语法练习（一） 一、单词基础变形默写（30题） 第一组 基础动词加re-（重新、再次） 1. write (v.写) → _______________（重写） 2. visit (v.参观) → _______________（重游） 3. build (v.建造) → _______________（重建） 4. think (v.思考) → _______________（反思） 5. open (v.打开) → _______________（重新开放） 6. take (v.采取) → _______________（重新采取） 7. create (v.创造) → _______________（重塑） 8. new (v.更新) → _______________（更新） 第二组 环保专用re-词汇（循环利用） 9. use (v.使用) → _______________（重复使用） 10. cycle (v.循环) → _______________（回收利用） 第三组 re-动词时态变形 11. reuse（过去式）_______________ 12. recycle（三单形式）_______________ 13. rebuild（过去分词）_______________ 14. rewrite（过去式）_______________ 15. reopen（现在分词）_______________ 第四组 词义派生（动词变名词） 16. reuse (v.) → _______________ (n.重复利用) 17. recycle (v.) → _______________ (n.回收业；回收利用) 18. rebuild (v.) → _______________ (n.重建工作) 19. renew (v.) → _______________ (n.更新；续签) 20. rethink (v.) → _______________ (n.重新思考) 拓展综合默写 21. 回收利用(v.) _______________ 22. 重复使用(v.) _______________ 23. 减少(v.独立单词) _______________ 24. 重游(v.) _______________ 25. 重建(v.) _______________ 26. 反思(v.) _______________ 27. 重写(过去分词) _______________ 28. 更新(三单) _______________ 29. 重塑(现在分词) _______________ 30. 重新采取(过去式) _______________ 二、用括号词根搭配re-，使用正确形式填空（22题） 词根词库：write / visit / build / use / cycle / think / new / take / open / create 1. The wetland park ________ after heavy rain last month. (open) 2. We ________ our shopping bags to cut plastic waste every day. (use) 3. Factories ________ tons of waste paper to make notebooks yearly. (cycle) 4. The local government ________ pollution control rules last year. (new) 5. All students need ________ their articles about low-carbon life. (write) 6. Next holiday, my group ________ the waste treatment factory. (visit) 7. Workers ________ the polluted riverside park last winter. (build) 8. We should ________ our consumption habits to protect the ocean. (think) 9. Volunteers ________ more clean-up activities every spring. (take) 10. People try ________ beautiful natural scenery after pollution is solved. (create) 11. The old recycling station ________ next Monday. (reopen，将来时) 12. He ________ his composition because of too many plastic-related mistakes yesterday. (rewrite) 13. Many towns ________ the old bridge after the flood two years ago. (rebuild) 14. If you have better ideas, you can ________ your whole plan. (rethink) 15. We ________ old glass bottles to store small plant seeds at home. (reuse) 16. This factory ________ metal cans into new toys every day. (recycle) 17. The school ________ its environmental rules every three years. (renew) 18. Environmental groups ________ protective actions when water gets dirty. (retake) 19. Artists ________ mountain landscapes for the green exhibition. (recreate) 20. The museum of environmental protection ________ to public soon. (reopen) 21. She ________ her travel diary to add more low-carbon tips last night. (rewrite) 22. Villagers ________ the forest roads to plant more trees last year. (rebuild) 三、句型转换（普通动词句 ↔ re-动词改写，12道） 例句：We use bags many times. → We reuse bags many times. 1. We process waste paper to make new books. → We ________ waste paper to make new books. 2. They will visit the eco-park again this summer. → They will ________ the eco-park this summer. 3. Workers built the damaged lake park once more. → Workers ________ the damaged lake park. 4. You need to consider your waste lifestyle again. → You need to ________ your waste lifestyle. 5. The factory opens its waste sorting station again tomorrow. → The factory ________ its waste sorting station tomorrow. 6. The government makes new pollution rules once again. → The government ________ pollution rules. 7. We take clean-up activities once more every month. → We ________ clean-up activities every month. 8. Artists make natural scenery paintings again for the show. → Artists ________ natural scenery paintings for the show. 9. She wrote her green plan a second time yesterday. → She ________ her green plan yesterday. 10. People use old boxes over and over at home. → People ________ old boxes at home. 11. Factories process plastic bottles into new goods. → Factories ________ plastic bottles into new goods. 12. People build green hills again after mining. → People ________ green hills after mining. 四、单项选择（18道，辨析re-词汇、时态、词义） 1. We should ______ old cloth bags instead of throwing them away. A. use B. reuse C. new D. renew 2. This factory ______ waste paper to produce textbooks every day. A. cycles B. recycles C. rethinks D. recreates 3. Volunteers ______ the broken riverside park after the storm last year. A. build B. rebuilt C. revisit D. retake 4. The town ______ its low-carbon rules to reduce rubbish last month. A. new B. renewed C. renews D. renewing 5. If your plan causes too much waste, you need to ______ it. A. think B. rethink C. take D. retake 6. I want ______ the environmental exhibition during summer vacation. A. visit B. to revisit C. revisiting D. revisits 7. Bringing cloth bags can ______ the number of plastic bags we buy. A. reduce B. reuse C. recycle D. rebuild 8. He ______ his report about sea pollution because of wrong data last night. A. writes B. rewrote C. rewritten D. rewrite 9. Environmental workers try to ______ clean seashores for animals. A. create B. recreate C. rethink D. reopen 10. Schools ______ waste sorting activities every autumn. A. take B. retake C. rebuild D. reuse 11. Waste metal ______ to make new tools in this factory. A. recycles B. recycled C. is recycled D. recycle 12. The small eco-museum ______ after two weeks’ repair. A. will reopen B. reopen C. reopens D. reopened 13. We ______ our old jars to store vegetable seeds. A. reuse B. recycle C. rebuild D. rethink 14. The engineer ______ the road design to cut pollution yesterday. A. rethink B. rethought C. rethinks D. rethinking 15. Local people ______ the ancient forest path after the fire. A. rebuild B. rebuilt C. rebuilds D. rebuilding 16. The word “______” means cutting down the amount of waste. A. reuse B. recycle C. reduce D. revisit 17. You can ______ your shopping list to choose less packaged food. A. rewrite B. rebuild C. retake D. reopen 18. Many cities ______ their waste management plans every year. A. renew B. reuse C. recycle D. rethink 五、中英互译（20题，环保写作专项） 汉译英 1. 重复使用布袋购物 ________________________ 2. 回收废纸和金属罐 ________________________ 3. 重游生态环保博物馆 ________________________ 4. 重建受污染河畔公园 ________________________ 5. 反思日常浪费习惯 ________________________ 6. 更新城市低碳条例 ________________________ 7. 重新开展河道清理行动 ________________________ 8. 重写环保主题报告 ________________________ 9. 重塑干净的自然湖泊 ________________________ 10. 减少一次性塑料制品 ________________________ 英译汉 1. rethink our shopping habits ________________________ 2. reuse empty glass jars ________________________ 3. recycle waste metal cans ________________________ 4. rebuild green hills ________________________ 5. renew environmental protection plans ________________________ 6. retake river clean activities ________________________ 7. rewrite low-carbon articles ________________________ 8. recreate beautiful wetland scenery ________________________ 9. revisit waste sorting factory ________________________ 10. reduce white pollution ________________________ 六、短文综合填空（3篇原创环保短文，用词根加re-并变换正确形式） Passage 1（校园环保活动） Our school will 1.________ (open) the waste-sorting corner next week. Teachers ask us to 2.________ (think) our bad waste habits. We can 3.________ (use) old paper bags when shopping. Factories nearby 4.________ (cycle) waste paper to make exercise books every day. Last term, our school 5.________ (new) strict green rules. We plan to 6.________ (visit) the recycling station and 7.________ (write) a group report after the trip. Volunteers 8.________ (build) small green gardens beside our classroom last month to 9.________ (create) a greener campus. We will 10.________ (take) more eco-activities to call on students to cut waste. Passage 2（城市河流治理） Lots of plastic polluted the river last year. The government decided to 1.________ (think) better ways to solve the problem. Workers 2.________ (build) stone river banks and planted many trees. Factories nearby must 3.________ (cycle) all waste plastic instead of throwing it into water. Citizens can 4.________ (use) clean bottles to hold drinking water. The city 5.________ (new) anti-pollution laws in spring. Environmental groups will 6.________ (take) weekly clean-up work. Artists will 7.________ (create) paintings of clean rivers and 8.________ (write) posters for people. The riverside park 9.________ (open) to visitors again next month, and tourists can 10.________ (visit) it for free. Passage 3（居家低碳生活） To protect our earth, everyone needs to 1.________ (think) their daily lifestyle. We can 2.________ (use) cloth bags instead of plastic ones. Old paper and cans can 3.________ (cycle) by community stations. My town 4.________ (new) waste sorting guides last week. I plan to 5.________ (write) my low-carbon diary every week and 6.________ (visit) the city green museum on holiday. My dad 7.________ (build) a small vegetable box with waste wood to 8.________ (create) a little garden at home. When we see rubbish in the lake, we will 9.________ (take) action to clean it and 10.________ (open) a small environmental sharing corner in our neighborhood. 参考答案 一、单词基础变形默写 1. rewrite 2. revisit 3. rebuild 4. rethink 5. reopen 6. retake 7. recreate 8. renew 9. reuse 10. recycle 11. reused 12. recycles 13. rebuilt 14. rewrote 15. reopening 16. reuse 17. recycling 18. rebuilding 19. renewal 20. rethink 21. recycle 22. reuse 23. reduce 24. revisit 25. rebuild 26. rethink 27. rewritten 28. renews 29. recreating 30. retook 二、词形变形式填空 1. reopened 2. reuse 3. recycle 4. renewed 5. to rewrite 6. will revisit 7. rebuilt 8. rethink 9. retake 10. recreate 11. will reopen 12. rewrote 13. rebuilt 14. rethink 15. reuse 16. recycles 17. renews 18. retake 19. recreate 20. will reopen 21. rewrote 22. rebuilt 三、句型转换 1. recycle 2. revisit 3. rebuilt 4. rethink 5. will reopen 6. renews 7. retake 8. recreate 9. rewrote 10. reuse 11. recycle 12. rebuild 四、单项选择 1.B 2.B 3.B 4.B 5.B 6.B 7.A 8.B 9.B 10.B 11.C 12.A 13.A 14.B 15.B 16.C 17.A 18.A 五、中英互译 1 学科网（北京）股份有限公司 汉译英 1. reuse cloth bags for shopping 2. recycle waste paper and metal cans 3. revisit the eco-environmental museum 4. rebuild the polluted riverside park 5. rethink daily waste habits 6. renew the city’s low-carbon rules 7. retake river cleaning activities 8. rewrite the environmental protection report 9. recreate clean natural lakes 10. reduce disposable plastic products 英译汉 1.反思我们的购物习惯 2.重复使用空玻璃罐 3.回收废旧金属易拉罐 4.重建青山 5.更新环保方案 6.重新开展河道清理活动 7.重写低碳主题文章 8.重塑美丽湿地风光 9.重游垃圾分类工厂 10.减少白色污染 六、短文综合填空 Passage 1 1. reopen 2. rethink 3. reuse 4. recycle 5. renewed 6. revisit 7. rewrite 8. rebuilt 9. recreate 10. retake Passage 2 1. rethink 2. rebuilt 3. recycle 4. reuse 5. renewed 6. retake 7. recreate 8. rewrite 9. will reopen 10. revisit Passage 3 1. rethink 2. reuse 3. be recycled 4. renewed 5. rewrite 6. revisit 7. rebuilt 8. recreate 9. retake 10. reopen $