Unit8知识点1 Section A 2025-2026学年人教版八年级英语下册

八年级英语下册Unit8知识点1-Section A 一、核心内容梳理 本课时围绕 “志愿服务与帮助他人” 展开，核心目标是： 1. 掌握常见的志愿活动短语（如 clean up, guide visitors 等），并能描述不同志愿组织的工作； 2. 熟练运用现在完成时与 for/since 结构，描述志愿工作的持续时间； 3. 提升口语表达能力，能与同伴讨论志愿活动的意义和个人经历。 二、重点句型解析 （一）描述志愿活动类 1. What can we do to help? 解析：to help 是动词不定式作目的状语，意为 “为了提供帮助”。 例句：What can we do to protect the environment? 2. I've been a volunteer here since last August. 解析：现在完成时 + since + 过去时间点，表示 “从过去某时开始一直持续到现在的动作”。 例句：I've lived here since 2010. 3. She has been a volunteer here for a long time. 解析：现在完成时 + for + 时间段，表示 “动作持续了多久”。 例句：I've studied English for three years. （二）描述志愿工作内容类 1. I exercise with the elderly to help them stay active. 解析：exercise with the elderly 意为 “和老人一起锻炼”；stay active 意为 “保持活力”。 例句：I read books to the children to help them learn. 2. I help the players and give directions. I clean up the stadium after matches too. 解析：give directions 意为 “指路”；clean up 意为 “打扫、清理”。 例句：I guide visitors and provide information about the museum. 3. She cleans the cages and feeds the animals. She also looks after the sick animals and collects donations. 解析：clean the cages 意为 “打扫笼子”；feed the animals 意为 “喂动物”；look after 意为 “照顾”。 例句：He takes care of the dogs and walks them every day. （三）讨论志愿活动意义类 1. It's important to care for the elderly. We'll all be old one day too. 解析：It's important to do sth. 表示 “做某事很重要”；care for 意为 “照顾、关心”。 例句：It's important to help others. 2. His pet has taught him that every animal is special and needs love. 解析：teach sb. that... 意为 “教会某人……”；special 意为 “特别的”。 例句：The experience has taught me that everyone can make a difference. （四）现在完成时与 for/since 类 1. How long have you been a volunteer? 解析：现在完成时的特殊疑问句，how long 用于询问 “持续多久”。 例句：How long have you been a member of the club? 2. Since I started, I have helped out at over ten different sports events. 解析：since 引导时间状语从句，从句用一般过去时，主句用现在完成时。 例句：Since I came here, I have made many new friends. 三、固定搭配与核心词汇 （一）志愿活动短语 短语 中文释义 短语 中文释义 clean up 打扫、清理 guide visitors 引导游客 visit the elderly 看望老人 give directions 指路 plant trees 植树 sort waste 垃圾分类 feed animals 喂动物 clean cages 打扫笼子 take care of sick animals 照顾生病的动物 collect donations 募集捐款 （二）for vs since 用法 连词 用法 例句 for 后接时间段，表示 “持续了多久” I've been a volunteer for two years. since 后接过去时间点或一般过去时从句，表示 “从…… 开始” I've been a volunteer since 2022. / I've been a volunteer since I left school. （三）核心短语 短语 中文释义 stay active 保持活力 care for 照顾、关心 look after 照顾 help out 帮忙、协助 make a difference 产生影响、有所作为 四、配套综合练习 （一）单项选择 1. I've been a volunteer here ______ last August. A. for B. since C. in D. at 2. She has been a volunteer here ______ a long time. A. for B. since C. in D. at 3. I exercise with the elderly to help them ______ active. A. stay B. stay to C. staying D. stayed 4. She cleans the cages and ______ the animals. A. feed B. feeds C. feeding D. fed 5. It's important ______ care for the elderly. A. to B. for C. of D. with （二）句型转换 1. I've been a volunteer for two years.（对划线部分提问） ______ ______ have you been a volunteer? 2. She has been a volunteer since 2022.（改为同义句） She has been a volunteer ______ two years. 3. I help the players and give directions.（改为一般疑问句） ______ you help the players and give directions? 4. He has taught in a primary school since 2021.（对划线部分提问） ______ ______ he taught in a primary school? 5. The experience has taught me that everyone can make a difference.（改为否定句） The experience ______ taught me that everyone can make a difference. 五、参考答案 （一）单项选择 1. B 2. A 3. A 4. B 5. A （二）句型转换 1. How long 2. for 3. Do 4. How long has 5. hasn't 1 学科网（北京）股份有限公司 $