Unit8Section A 语法课课件2025-2026学年人教版八年级英语下册

该初中英语课件聚焦现在完成时中for（时间段）和since（时间点）的用法及延续性动词转化，通过“时间警报器”游戏让学生快速补全句子，结合视频观看时间表达示例，激活已有知识，搭建从情境体验到语法规则学习的支架。 其亮点在于融合任务型教学与核心素养培养，如Production环节的小组访谈任务，学生用How long...?句型询问同伴经历并汇报，提升语言运用能力。以志愿者主题贯穿始终，如Homework的“My Volunteer Story”写作，培养社会责任感。练习分层设计，选做任务如时间轴Vlog脚本和语法海报，发展自主学习能力。学生能在真实语境中掌握语法，教师可借助完整流程和多样活动高效教学。

Unit Eight Making a Difference Sec A Grammar Focus Why should we help others? Learning Objectives Master the usage of the Present Perfect Tense with for (for durations) and since (for time points); correctly use for / since in sentences; describe personal volunteer experiences and ongoing life events with the target grammar. 语言能力 学习能力 文化品格 思维品质 Master the usage of the Present Perfect Tense with for (for durations) and since (for time points); correctly use for / since in sentences; describe personal volunteer experiences and ongoing life events with the target grammar. Summarize the differences between for and since independently; consolidate grammar rules through sentence-filling, passage-completion and group interview tasks; transfer the grammar to real-life communication contexts. Understand the meaning of volunteer work; cultivate the awareness of mutual help and social responsibility; develop a positive attitude towards contributing to the community. Distinguish the usage scenarios of for and since; analyze the logical relationship between actions and their durations; improve narrative logic when talking about personal experiences. Warm up 01 目 录 CONTENTS Lead in 02 Presentation 03 Practice 04 Production 05 Summary 06 Exercise 07 Homework 08 Warm up 01 时间警报器： 学生快速传递计时器，拿到的学生必须立刻补全下面句子，正确才可传递给下一个人，计时器发出警报，则该队输。 I have been a volunteer here ... Lead in 01 1. She has been studying English ______ she was 10 years old. 2. We have lived in this city ______ 5 years. 3. He hasn’t called me ______ last Christmas. 4. They have been waiting for the bus ______ two hours. 5. I haven’t had a holiday ______ 2020. 请用for/since完成下列题目吗 for or since? Watch the video. Presentation 01 过去 现在 将来 How long have you been a volunteer? I have been a volunteer here since 2016. I have been a volunteer here for ten years. since 2016 for ten years +开始的时间点 +一段时间 since for “自从...”+过去的某个时间点 +一段时间 I have been a volunteer here since a month ago. Tips: since +一段时间+ago 另外，since 还可接从句 （注意：主句用现在完成时，从句用一般过去时） eg:She has taught here since she left college. 1. She has been studying English ______ she was 10 years old. 2. We have lived in this city ______ 5 years. 3. He hasn’t called me ______ last Christmas. 4. They have been waiting for the bus ______ two hours. 5. I haven’t had a holiday ______ 2020. 请用for/since完成下列题目吗 since for since for since Have you been to our animal shelter before? No, I haven't. But one of my friends has volunteered here for a long time. Has she ever done volunteer work? Yes, she has. She has been a volunteer at a nursing home since last August. How long have you been a volunteer? I have been a volunteer here for a few months. How long has he worked as a volunteer at the museum? He has volunteered here since his summer holidays started. 观察句中这些动词，他们都有什么特点? 这些动词都是延续性动词。 表示能够延续的动作，也可以表示经验与经历 延续性动词 也称终止性动词或瞬间动词，表示不能延续的动作，这种动作发生后立即结束。 非延续性动词 延续性动词 VS 非延续性动词 （注意：在现在完成时的句子中，若含有for或since引导的时间状语，则句中谓语一定要用延续性动词。） 常见的延续性动词和非延续性动词的转化 非延续性动词(词组) 延续性动词(词组) begin be on finish be over leave be away die be dead open be open close be closed marry be married fall asleep be asleep fall ill be ill 将非延续性动词转化为“ be +形容词或副词/介词/名词” 常见的延续性动词和非延续性动词的转化 非延续性动词(词组) 延续性动词(词组) buy have borrow keep become be catch a cold have a cold go to sleep sleep put on wear/be on 有的非延续性动词可以转化为意思相同的延续性动词 Practice 01 Complete the sentences with the correct forms of the verbs in brackets and for or since. 4b 1. This college student enjoys volunteering for the army. She ______________ (teach) English to the soldiers _____ three years. 2. I ______________(be) a member of the Red Cross for six years. I’ve made a lot of friends ______ I joined the organization. 3. Mr Wu has taught in a primary school as a volunteer _____ two years now. ________ he started working there, he _____________(help) many students. 4. The organization ______________(train) over 6,000 volunteers _______ it began to offer classes three years ago. have been since has taught for for has helped has trained Since since 军队 军人；士兵 小学教育的；首要的 多于；超过（=more than ） I love being a volunteer! I____________(work) with a sports organization for almost three years now. Since I started, I ____________ (help) out at over ten different sports events. I ____________(make) many new friends and I ________ even ________(meet) many famous athletes. For example, I ______(meet) two national football players from Argentina last month. They were at a stadium for a charity match. The stadium _______(be) so big that they_______ (get) lost. I gave them directions and they________(smile) and____________(thank) me warmly. I am proud to be a volunteer. Complete the passage with the correct forms of the verbs in brackets. 4c Watch the video and check your answer. I love being a volunteer! I____________(work) with a sports organization for almost three years now. Since I started, I ____________ (help) out at over ten different sports events. I ____________(make) many new friends and I ________ even ________(meet) many famous athletes. For example, I ______(meet) two national football players from Argentina last month. They were at a stadium for a charity match. The stadium _______(be) so big that they_______ (get) lost. I gave them directions and they________(smile) and____________(thank) me warmly. I am proud to be a volunteer. Complete the passage with the correct forms of the verbs in brackets. 4c have worked have helped have made have met met was got smiled thanked =nearly help out 分担工作；帮忙做 慈善机构（或组织）；慈善事业 be proud to do sth 为做……感到骄傲/自豪 Production 01 Work in groups. Interview your groupmates using the questions below. Share the answers with the class. 4d How long have you known your best friend/...? had your favourite toy/...? lived in your neighbourhood/...? 汇报分享：请每组派小代表上台，并汇报组内的“最有趣/最长时间”的回答。 例如：Tom has known his best friend for 10years!That`s the longest in our group. Summary 01 Summary since for +过去的某个时间点 +一段时间+ago +从句 （主句用现在完成时，从句用一般过去时） +一段时间 延续性动词：表示能够延续的动作，也可以表示经验与经历 非延续性动词：也称终止性动词或瞬间动词，表示不能延续的动作，这种动作发生后立即结束。 Exercise 01 1. ______ 2018, my grandma has lived in this village. 2. —How long have you studied in this school? —______ three years ago. 3. Lily has learned to dance ______ she was 7 years old. 4. My brother has collected stamps ______ five years. 5. ______ I met you last time, I have finished three books. 6. The little dog has been with us ______ 2021. 7. They have been friends ______ more than 10 years. 8. Mr. Li has taught us math ______ last September. 用for/since填空 1. ______ 2018, my grandma has lived in this village. 2. —How long have you studied in this school? —______ three years ago. 3. Lily has learned to dance ______ she was 7 years old. 4. My brother has collected stamps ______ five years. 5. ______ I met you last time, I have finished three books. 6. The little dog has been with us ______ 2021. 7. They have been friends ______ more than 10 years. 8. Mr. Li has taught us math ______ last September. Since Since since for Since since for since 单项选择 1. My mom has worked as a teacher ______ 2012 and she has taught in this school ______ 12 years. A. for;since B.since;for C. since;since D. for;for 2. ---Lucy, how long have you _____ your favorite storybook? ----_____three weeks ago. I got it on my birthday. A. bought;For B. had;For C. bought;Since D. had;Since B D 单项选择 3. Time flies! Five years ______ since I ______ this primary school. A. have passed; came to B. has passed;came to C. has passed; have come to D. have passed;have came to 4. ---_____ did your brother start playing the guitar? ----He _____ the guitar for about four years. A. When; has played B. How long; has played C. When; played D. How long; played B A 单项选择 5. Melting ice(融冰) can cause sea level to rise. Since 1993, sea level ______ at a speed of 3.2 cm every 10 years. A. rose B. has risen C. rises D. is rising 6. The film Ne Zha 2 is worth seeing. I _____ it three times so far. A. have seen B. am going to see vC. saw D. see B A Homework 01 仿照4a例句，写5个关于“你或他人的长期经历”的句子，其中3句用for，2句用since。 例：I have studied English for 6 years. / She has lived here since 2018. 短文写作：以“My Volunteer Story”为题，写一段80词左右的小短文 至少用到2次for/since和现在完成时，描述一次持续的志愿或助人经历。 Must-do 01 02 🎬 「时间轴Vlog脚本」 任务：以“我的长期故事”为主题，画一条简易时间轴，标注自己坚持/拥有的事物（如学钢琴、养宠物、住在这里），并为每个节点配1句 How long have you...? + for/since 的问答对话脚本。 🎨 「语法海报」 任务：制作一张 for vs since 对比海报，用思维导图/漫画/图标等形式，清晰展示两者的用法区别，再配上3个自己造的例句。 Choose-to-do 01 02 Lavf58.46.101 $