2026春人教英语八下 Unit 2 Stay Healthy讲解和精练（含答案）

2026春人教版八下 Unit 2 Stay Healthy 单元讲解和练习 本单元围绕 “Stay Healthy（保持健康）” 展开，核心探讨健康问题的识别、应对及安全防护方法。内容涵盖三大模块： 健康问题应对：识别常见健康问题（如喉咙痛、胃痛、牙痛等），学习用英语描述症状，掌握医生与患者的对话表达，以及针对不同健康问题的建议（如用药、就医、日常护理）； 安全防护实践：通过 “烹饪起火” 的故事，学习家庭安全隐患（如火灾）的应对方法，了解急救知识（如灭火器使用、烧伤处理），以及过敏反应的紧急处理； 实践任务：设计 “健康手册” 项目，引导学生整合单元知识，围绕某一健康问题（如食物过敏、眼疲劳）整理成因、症状、处理方法及预防建议，提升英语应用与健康防护能力。 本单元旨在帮助学生掌握 “谈论健康问题与给出建议” 的英语表达，树立健康管理意识，同时巩固情态动词（should/could）和反身代词的用法。 词汇记忆：“症状 + 应对” 关联记忆将健康问题词汇与对应的应对措施绑定（如 “toothache” 关联 “see a dentist”“avoid sweet things”；“burn” 关联 “use fire extinguisher”“roll on the ground”），结合单元例句仿写，强化记忆。 语法练习：“场景 + 造句” 巩固针对情态动词，围绕 “不同健康问题” 造句（如 “牙痛：You should see a dentist. You could eat porridge.”）；针对反身代词，结合 “安全动作” 造句（如 “Be careful! Don’t cut yourself with the knife.”），确保用法准确。 口语表达：模拟 “医患对话”参考课本 3d 的对话模板，和同学分别扮演医生与患者，用 “Describe symptoms→Ask questions→Give advice” 的流程练习， 如： Patient: I have a stomachache.Doctor: What did you eat yesterday Patient: I ate too much fried chicken.Doctor: You should avoid fried food. You could drink some warm water. 阅读拓展：积累 “安全急救” 表达阅读单元 B 部分 “烹饪起火” 故事时，摘抄安全相关短 语（如 “put out fire”“first aid”“stop short”），整理成 “安全手册” 笔记，为写作和实践任务做准备。 ( （一）核心单 词 ) sore /s (r)/adj. 疼痛的；酸痛的 搭配：sore throat 喉咙痛；sore back 背痛 例句：Judy has a sore throat because she talked too much and didn’t drink enough water. stomachache / st m ke k/n. 胃痛；肚子疼 搭配：have a stomachache 胃痛；get a stomachache 肚子疼 例句：David got a stomachache after eating too much at his friend’s birthday party. toothache / tu θe k/n. 牙痛 搭配：have a terrible toothache 牙痛得厉害；see a dentist for toothache 因牙痛看牙医例句：Nancy has a terrible toothache because she ate too many sweet things. fever / fi v (r)/n. 发烧 搭配：have a high fever 发高烧；take one’s temperature 量体温 例句： Helen has a high fever, so the doctor advised her to rest at home and drink more water. dentist / dent st/n. 牙科医生 搭配：visit a dentist 看牙医；go to the dentist for an X-ray 去牙医诊所拍 X 光片 例句：The nurse told Nancy she should see a dentist because she might need an X-ray for her toothache. medicine / medsn/n. 药；医学 搭配：take medicine 吃药；take some medicine three times a day 一天吃三次药 例句：The doctor gave Helen some medicine for her flu and told her to take it after meals. virus / va r s/n. 病毒 搭配：flu virus 流感病毒；stop the virus from spreading 阻止病毒传播 例句：Wearing a mask can ... ...