Unit4 知识点 Understanding ideas练习 2025-2026学年外研版八年级英语下册

八年级英语下册Unit4知识点-Understanding ideas练习 小试牛刀 A. 从故事中找出下列动词的过去式，并写出原形 过去式（从文中找） 动词原形 asked __________ said __________ happened __________ provided __________ was __________ were __________ was born __________ made __________ wanted __________ planned __________ was __________ did __________ held __________ spread __________ went __________ B. 用 may, can, could, must 填空 1. “Excuse me, __________ I have a purple crayon, please?” 2. Crayons __________ carry viruses and spread diseases. 3. They __________ only be used once. 4. There __________ be something for me to do. 5. Because of her illness, she __________ not do chores for money. 配套练习 A. 单项选择（★） 从A、B、C、D中选择最佳答案。 1. “Leah asked a nurse for a crayon.” 中的 “asked” 是： A. 动词原形 B. 过去式 C. 现在分词 D. 第三人称单数 2. 下列哪个动词的过去式是不规则变化？ A. asked B. happened C. provided D. held 3. “May I have a purple crayon?” 中的 “may” 表示： A. 能力 B. 许可 C. 必须 D. 可能 4. “Crayons may carry viruses.” 中的 “may” 表示： A. 许可 B. 可能 C. 必须 D. 能力 5. “She couldn’t do chores for money.” 中的 “couldn’t” 表示： A. 不可能 B. 不允许 C. 没有能力 D. 不应该 B. 完成句子（★★） 根据中文提示和短文内容，用正确的动词过去式或情态动词完成句子。 1. 五岁的Leah问护士：“请问，我可以要一支紫色蜡笔吗？” Five-year-old Leah __________ a nurse, “__________ I have a purple crayon?” 2. 医院为小病人提供涂色书。 The hospital __________ colouring books for young patients. 3. 蜡笔可能携带病毒，只能使用一次。 Crayons __________ carry viruses and __________ only be used once. 4. 她计划为医院购买500盒蜡笔。 She __________ to buy 500 boxes of crayons for the hospital. 5. 在家人的帮助下，她举办了许多活动来筹款。 With the help of her family, she __________ many activities to raise money. C. 拓展思考（★★★） 请根据要求完成以下任务。 Part 1（一般过去时） 用一般过去时写三句话，描述你曾经帮助过别人的一次经历。 1. ____________________________________________________________ 2. ____________________________________________________________ 3. ____________________________________________________________ Part 2（情态动词） 用 may, can, could, must 各写一个句子，描述医院或学校的规则。 4. (may) _______________________________________________________ 5. (can) _______________________________________________________ 6. (could) ______________________________________________________ 7. (must) ______________________________________________________ Part 3（综合） 写一段话（至少4句）讲述一个像Leah一样善良的人的故事（可以是真实或虚构），使用一般过去时和至少两个情态动词。 ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ 参考答案与解析 小试牛刀 A 过去式 动词原形 asked ask said say happened happen provided provide was be were be made make wanted want planned plan held hold spread spread went go 小试牛刀 B 1. may / could 2. may 3. can / may 4. must 5. could 配套练习 A 1. B 2. D（hold→held） 3. B 4. B 5. C 配套练习 B 1. asked, May / Could 2. provided 3. may, can 4. planned 5. held 配套练习 C （参考示例） 1. Last week, I helped my neighbour carry her heavy bags. 2. I gave my old toys to a children’s home. 3. I volunteered at an animal shelter and walked the dogs. 4. You may use the library computer for homework. 5. You can bring your own water bottle to school. 6. Could you please help me with this box? 7. You must wash your hands before eating. 8. I read a story about a girl named Leah. She was very kind. She saw that sick children had no crayons to colour with. Crayons may carry viruses, so the hospital could not give them to everyone. Leah planned to buy 500 boxes, but she only had a little money. She could not do chores because of her illness. But she didn’t give up. With her family’s help, she held many activities and raised money. She collected over 2,600 boxes of crayons. She added colour to the hospital, and she brought joy to many children. 1 学科网（北京）股份有限公司 $