Unit8知识点-Section B练习2025-2026学年人教版英语八年级下册

八年级英语下册Unit8知识点-Section B练习 小试牛刀 A. 从演讲中找出下列动词的过去式或过去分词，并写出原形 过去式/过去分词（从文中找） 动词原形 was __________ fell __________ had to __________ called __________ heard __________ started __________ signed up __________ have been __________ have taught __________ has helped __________ have rescued __________ have provided __________ have searched __________ have been __________ has taught __________ B. 用括号内动词的正确形式填空（一般过去时或现在完成时） 1. Back in 2008, I __________ (hike) in the mountains when my friend __________ (fall) and __________ (get) a head injury. 2. We __________ (call) an emergency number, and the Blue Sky Rescue team __________ (find) us. 3. I __________ (never forget) that day. Since then, I __________ (want) to help others. 4. I __________ (sign up) with Blue Sky Rescue in 2009, and I __________ (be) a volunteer ever since. 5. We __________ (rescue) people during emergencies and __________ (provide) medical aid after natural disasters. 6. Working as a volunteer __________ (teach) me many life-saving skills. 7. I __________ (learn) the value of every life through this work. C. 用 so, because, but, and 填空 1. We had to find help quickly, __________ we called an emergency number. 2. It was already dark, __________ we couldn’t see where we were. 3. We heard dogs barking, __________ we were so thankful. 4. I signed up with Blue Sky Rescue, __________ I’ve been a volunteer ever since. 5. The work is difficult, __________ we aren’t paid. 6. We want to do even more, __________ we can’t do it all alone. 7. I’ll rush into danger, __________ I know we’re their heroes. D. 用动词不定式（to + 动词原形）完成句子，表示目的 1. We called an emergency number __________ (find) help quickly. 2. The team came __________ (rescue) us. 3. We go to schools __________ (teach) children how to stay safe. 4. We search for missing people __________ (save) lives. 5. Will you join us __________ (make) a difference? 配套练习 A. 单项选择（★） 从A、B、C、D中选择最佳答案。 1. “I’ve been a volunteer ever since.” 这句话使用的时态是： A. 一般过去时 B. 现在完成时 C. 一般将来时 D. 过去完成时 2. 现在完成时的结构是： A. have/has + 动词原形 B. have/has + 动词-ed C. be + 动词-ing D. did + 动词原形 3. “We called for help because we were lost.” 中的 “because” 表示： A. 结果 B. 原因 C. 转折 D. 并列 4. “I signed up to help others.” 中的不定式表示： A. 目的 B. 原因 C. 结果 D. 条件 5. 下列句子中，现在完成时使用正确的是： A. I join Blue Sky Rescue since 2009. B. I have joined Blue Sky Rescue since 2009. C. I have been a volunteer since 2009. D. I am a volunteer since 2009. B. 完成句子（★★） 根据演讲内容和语法提示，用正确的动词时态、连词或不定式完成句子。 1. 2008年，我正在山里徒步旅行，这时一位朋友摔倒了。 In 2008, I __________ hiking in the mountains when a friend __________. 2. 我们打电话求助，蓝天救援队找到了我们。 We __________ an emergency number, and the Blue Sky Rescue team __________ us. 3. 从那以后，我一直想帮助别人。 Since then, I __________ wanted to help others. 4. 我们去学校教孩子们如何保持安全。 We go to schools __________ children how to stay safe. 5. 工作很困难，但一切都是值得的。 The work is difficult, __________ it is all worth it. C. 补全对话（★★★） 根据演讲内容和语法知识，从方框中选择合适的句子完成对话。 A. Since then, I’ve wanted to help others too. B. We called for help, and they rescued us. C. Because it gives me a sense of purpose. D. We go to schools to teach safety skills. Tom: How did you first learn about Blue Sky Rescue? Lucy: Back in 2008, I was hiking and my friend got injured. (1) __________ Tom: What did you do after that? Lucy: (2) __________ I signed up as a volunteer in 2009. Tom: What kind of work do you do? Lucy: (3) __________ We also rescue people during emergencies. Tom: Why do you keep doing this difficult work? Lucy: (4) __________ And it teaches me the value of every life. D. 拓展思考（★★★） 请根据要求完成以下任务。 Part 1（一般过去时叙述经历） 用一般过去时写三句话，描述你曾经接受他人帮助或帮助他人的一次经历。 1. ____________________________________________________________ 2. ____________________________________________________________ 3. ____________________________________________________________ Part 2（现在完成时描述持续影响） 用现在完成时写两个句子，描述某件事从过去到现在对你的影响。 4. ____________________________________________________________ 5. ____________________________________________________________ Part 3（综合） 写一段话（至少5句）谈谈你对志愿服务的看法。你愿意成为志愿者吗？为什么？使用一般过去时、现在完成时、至少一个连词和一个不定式表示目的。 ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ 参考答案与解析 小试牛刀 A 过去式/过去分词 动词原形 was be fell fall had to have to called call heard hear started start signed up sign up have been be have taught teach has helped help have rescued rescue have provided provide have searched search have been (to) be has taught teach 小试牛刀 B 1. was hiking, fell, got 2. called, found 3. have never forgotten, have wanted 4. signed up, have been 5. have rescued, provided 6. has taught 7. have learned 小试牛刀 C 1. so 2. and / so 3. and / so 4. and 5. and / but 6. but 7. because 小试牛刀 D 1. to find 2. to rescue 3. to teach 4. to save 5. to make 配套练习 A 1. B 2. B 3. B 4. A 5. C 配套练习 B 1. was, fell 2. called, found 3. have 4. to teach 5. but 配套练习 C 1. B 2. A 3. D 4. C 配套练习 D（参考示例） 1. Last year, I helped an old woman carry her heavy bags. 2. She smiled and said thank you, and I felt very happy. 3. Once, I lost my phone on a bus, and a stranger returned it to me. 4. I have learned that small acts of kindness can make a big difference. 5. Since that day, I have tried to help others whenever I can. 6. I think volunteering is very meaningful. I have never been a volunteer before, but I would like to join a group like Blue Sky Rescue. They help people in danger without getting paid. I have read about their work in Yaan and Türkiye. I want to learn life-saving skills to help others in need. Because every life is valuable, and helping others makes the world a better place. 1 学科网（北京）股份有限公司 $