Unit8 易错专题专练 2025-2026学年人教版 八年级下册英语

**基本信息** 聚焦Unit8现在完成时核心考点，通过分层训练+易错警示构建"词汇-语法-语篇"一体化突破体系，强化语言能力与思维品质。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |基础过关|8题|核心词汇情境化应用|从基础词汇积累切入，奠定语言能力基础| |单项选择|8题|since/for辨析、瞬间动词转换、时态呼应规则|聚焦语法易错点，通过"规则+警示"强化思维逻辑| |词形变化/句型转换|10题|现完时结构、动词延续性转换|从词形到句型，深化语法应用能力| |语法填空/阅读/写作|1篇+5题+1篇|语篇中时态综合运用|从单句到语篇，提升综合语言运用与学习能力|

2025-2026学年八年级下册英语人教版 Unit8 易错专题专练+解析 一、基础过关 根据句意和汉语提示写单词 1. We should help the _(年老的)in the nursing home do daily chores. 2. My sister wants to _(报名)for the community volunteer programme next month. 3. He made a _(捐赠)of 500 yuan to the children's charity. 4. Small acts of kindness can make a big _(影响)to our neighborhood. 5. The _(观众)clapped warmly after the voluntary performance. 6. The rescue team is _(愿意的)to help people in need anytime. 7. My parents give me 50 yuan _(零花钱)every week to buy books. 8. We need to _(分发)leaflets about the charity sale this afternoon. 二、单项选择 9. I have worked as a volunteer in the nursing home _ 2023. A. for B. since C. in D. at 10. My grandma has lived in this community _ 5 years. A. since B. in C. for D. on 11. Tom _ in the volunteer group since he moved to this city. A. joined B. has joined C. has been in D. joins 12. The old shelter _ for 20 years, but it still provides a safe place for the homeless. A. has closed B. has been closed C. closed D. is closing 13. Great changes _ place in our community since we _ the volunteer programme. A. took; started B. have taken; started C. have taken; have started D. take; have started 14. — How long have you volunteered at the animal shelter? — _ 6 months ago. A. Since B. For C. In D. On 15. My uncle has helped the elderly in the neighborhood _ 5 years. A. since B. for C. in D. on 16. We _ the elderly every weekend since last year. A. visit B. visited C. have visited D. will visit 三、词形变化 用所给单词的适当形式填空: 17. I _ (volunteer) in the community library since I was in primary school. 18. The old man _ (die) for 10 years, but we still remember his kindness. 19. She _ (donate) over 1,000 books to the mountain school so far. 20. We _ (hand) out leaflets about fire safety every weekend for 2 years. 21. The charity event was a big _ (succeed) — we raised 20,000 yuan yesterday. 四、句型转换 按要求完成句子 22. I have kept the donated books since last month.(对划线部分提问) _ _ have you kept the donated books? 23. He has worked as a volunteer for 3 years.(对划线部分提问) _ _ has he worked as a volunteer? 24. I joined the volunteer group 2 years ago.(用for 2 years改写) I _ _ in the volunteer group for 2 years. 25. The factory opened in 2000.(用since 2000改写) The factory _ _ open since 2000. 26. She borrowed the storybooks 3 weeks ago.(用for 3 weeks改写) She _ _ the storybooks for 3 weeks. 五、语法填空(共10小题,每空1分,计10分) 阅读短文,用所给词的正确形式填空: I 27_ (work) as a volunteer at the community nursing home since I 28_ (move) here last year. I 29_ (help) the elderly clean their rooms and read newspapers to them every weekend. My friend Lily 30_ (be) in the volunteer group longer than me — she 31_ (sign) up 3 years ago! So far, we 32_ (collect) over 500 winter coats for the homeless. It 33_ (make) me feel a strong sense of satisfaction when I see the smiles on the elderly's faces. We believe small actions 34_ (make) a big difference since we 35_ (start) the project. 六、阅读理解 阅读短文,选择正确答案: Our school started a "Warm Heart" volunteer club last September. Ever since then, over 200 students have signed up. Every Saturday afternoon, we go to the nearby nursing home to help the elderly. Some students help clean rooms, some read newspapers, and others teach the elderly how to use smartphones. Since we started the club, the nursing home has become livelier. The elderly often say our visits make their days brighter. Last month, we held a charity sale and raised 3,000 yuan for the nursing home to buy new medical equipment. We are small, but we are willing to make a difference. 36. When did the "Warm Heart" club start? A. Last Saturday. B. Last September. C. 3 years ago. D. 200 students ago. 37. How often do students go to the nursing home? A. Every day. B. Every Saturday afternoon. C. Every Sunday. D. Once a month. 38. What do students NOT do for the elderly? A. Clean rooms. B. Read newspapers. C. Teach English. D. Teach smartphone use. 39. How much money did the charity sale raise? A. 200 yuan. B. 3,000 yuan. C. Over 500 yuan. D. 2 years' worth. 40. What is the main idea of the passage? A. How to use smartphones. B. A successful charity sale. C. Making a difference through volunteering. D. Life in the nursing home. 七、书面表达(计15分) 假如你是李华,请根据提示写一篇60词左右的英语短文,介绍你的志愿服务经历: 提示要点: 1. 从去年开始(since last year)在社区做志愿者; 2. 每周六花3小时(for 3 hours)帮助老人打扫卫生、读报纸; 3. 已经捐了(donate)200本旧书给山区孩子; 4. 感觉很有满足感(a sense of satisfaction); 5. 相信小小的行动能带来改变(make a difference)。 参考答案与解析 一、基础过关 1. elderly 2. sign up 3. donation 4. difference 5. audience 6. willing 7. pocket money 8. hand out 二、单项选择 9. 【答案】B 【全解全析】句意为“我从2023年起就在养老院做志愿者”。since后接过去时间点(2023)时,主句需用现在完成时,符合题干时态要求;for后接时间段,in/on不符合现在完成时的时间状语搭配。 【易错警示】since后接过去时间点(年份、月份、ago时间),for后接时间段(几年、几个月),二者绝对不能混用,看到年份、ago类时间点优先选since。 10. 【答案】C 【全解全析】句意为“我奶奶在这个社区住了5年了”。“5 years”是时间段,需用for搭配,且主句为现在完成时,符合“for+时间段+延续性动词”的语法规则;since后接时间点,不符合此处语境。 【易错警示】for后只能接时间段,不能接时间点,看到“数字+years/months/days”这类表述直接选for即可。 11. 【答案】C 【全解全析】句意为“汤姆自从搬到这座城市就一直留在志愿者小组里”。since引导的时间状语从句是现在完成时的标志,且join是瞬间动词,不能和since连用,需转换为延续性状态be in,故选C。 【易错警示】join、die、buy、borrow等瞬间动词不能直接和since/for连用,必须转换为对应的延续性状态(be in、be dead、have、keep),这是Unit8最高频扣分点。 12. 【答案】B 【全解全析】句意为“这家旧收容所已经运营20年了,现在仍能为无家可归者提供安全的容身之处”。for 20 years是时间段,需用现在完成时,且close是瞬间动词,需转换为延续性状态be closed表“处于运营/关闭状态”,故选B。 【易错警示】close、open这类表示状态变化的瞬间动词,和for/since连用时必须转换为be closed/be open的延续性状态,不能直接用动词原形。 13. 【答案】B 【全解全析】句意为“自从我们启动志愿者项目以来,社区发生了巨大的变化”。since引导时间状语从句时遵循“主句现完,从句一过”的铁律:主句changes是持续到现在的影响,用现在完成时have taken;从句start是过去发生的动作,用一般过去时started。 【易错警示】since引导的从句绝对不能用现在完成时,只能用一般过去时,主句则必须用现在完成时,这是固定的时态搭配规则。 14. 【答案】A 【全解全析】问句询问做志愿者的时长,答语“6 months ago”是过去时间点,符合since的时间状语搭配;since后接时间点时,主句需用现在完成时,和题干时态完全匹配。 【易错警示】回答How long引导的时长问句时,若后接过去时间点(如ago时间、具体年份),需用Since引导;若接时间段则用for,二者不能混淆。 15. 【答案】B 【全解全析】句意为“我叔叔已经给社区老人提供帮助5年了”。“5 years”是时间段,需用for搭配,且主句为现在完成时,符合“for+时间段+延续性动词”的语法规则;since后接时间点,不符合此处语境。 【易错警示】本题与第10题形成“时间段vs时间点”的互补考察,无考点重复,看到时间段直接选for即可。 16. 【答案】C 【全解全析】句意为“自去年以来,我们每个周末都会去看望老人”。since last year是现在完成时的标志,且visit是延续性动词,能和since连用表动作的持续,故选C。 【易错警示】看到since+时间点,优先判断主句是否用现在完成时,同时确认谓语动词是延续性动词,二者搭配才符合语法规则。 三、词形变化 17. have volunteered/have been volunteering(since引导的时间状语用现在完成时) 18. has been dead(for 10 years是时间段,die是瞬间动词,需转换为延续性状态be dead,主语是单数,用has been dead) 19. has donated(so far是现在完成时标志,主语she是单数,用has donated) 20. have handed(for 2 years是时间段,和延续性动词hand out连用,主语we用have handed) 21. success(a big后接名词,succeed的名词形式是success) 四、句型转换 22. Since when(对since+时间点提问用Since when) 23. How long(对for+时间段提问用How long) 24. have been(join是瞬间动词,和for 2 years连用需转换为have been in) 25. has been(open是瞬间动词,和since 2000连用需转换为has been open表状态) 26. has kept(borrow是瞬间动词,和for 3 weeks连用需转换为has kept) 五、语法填空 27. have worked/have been working 28. moved 29. help 30. has been 31. signed 32. have collected 33. makes 34. have made 35. started 六、阅读理解 36. B(原文:Our school started a "Warm Heart" volunteer club last September.) 37. B(原文:Every Saturday afternoon, we go to the nearby nursing home to help the elderly.) 38. C(原文提到clean rooms、read newspapers、teach smartphone use,未提及教英语。) 39. B(原文:Last month, we held a charity sale and raised 3,000 yuan for the nursing home.) 40. C(全文围绕志愿服务带来的改变展开,其他选项均为细节,不是主旨。) 七、书面表达 参考范文: My Volunteering Experience I have worked as a community volunteer since last year. Every Saturday, I spend 3 hours helping the elderly clean their houses and read newspapers to them. I have also donated 200 old books to children in mountain villages. I feel a strong sense of satisfaction when I see their smiles. I believe even small actions can make a big difference to our neighborhood. 学科网(北京)股份有限公司 $