Unit 8 课时3 Section A Grammar Focus 含交互动画（课件）英语新教材人教版八年级下册

English lessons today's mini english lesson is on how to use four, and since we use for and since to indicate for how long you've been in something or since when you one. I came to france in two thousand and sixteen, so I could say I have lived in france for three years. Oh, I could say I have lived in france since two thousand and sixteen. One good way to remember the different between four and since, as you can draw a line across the f indicating that four is used for a period, well, since you can draw adult on the eye indicating an exact point in time. Another example, I like play football, and I started when I was four years old, so I could say I have play football since I was four or I sao thirty years. All these examples, we use the present perfect. We say, I have lived in paris for three years. I have played football since I was four. We almost always use the present perfect. Sometimes you can use the simple past in this video. I'm not going to explain that, but if you want to find out more about the simple past version, the present perfect, look at another mini english lesson made by one of my colleagues, Regina. I hope after watching this video, you understand Better how to use for a period of time, and since for an exact moment in time using the present. perfect. Good luck to you. goodbye. 非延续性动词→延续性表达 ☒ ◆配对挑战·巩固转换规则念 。规则：非延续性动词不能与“时间段"连用一需转换为“be+形容词/副词/介词短语”。 ©点击左边【原形动词】，再点击右边【延续性表达】，配对成功即可得分！全部配对完成即获胜。 里配对成功0/17 C重新挑战 ·非延续性动词短语 ☑延续性表达(be+.) begin/start(开始) be back go there(去那里) be deadUnit 8 Making a Difference 第三课时 Section A Grammar Focus 课型：语法课 主讲人：XXX Presentation 02 Practice 03 Lead-in 01 Production 04 CONTENTS Language points 06 Exercises 07 Summary 05 Homework 08 cb7c5ce8-4c1b-4a9a-b3c4-4365f841c3f0.source.default.zh-Hans 2 学习目标 理解并区分 for + 时间段 和 since + 时间点 的含义与用法；能回顾现在完成时的基本结构和用法（肯定、否定、疑问）；能识别句子中需要与现在完成时连用的时间状语（for, since, already, yet, ever, never等） 01 运用 for 和 since 完成课本4a-4d的填空与句子改写练习；正确选择并使用 for 或 since 来描述动作或状态的持续时间；运用现在完成时和 for/since 结构，就“志愿者经历”进行问答和描述。 02 在“校园志愿者招募”情境中，综合运用所学语法，介绍自己的志愿服务时长和经历；对比自己和他人的志愿者经历，运用 for 和 since 进行信息整合与汇报。 03 通过本节课学习，学生能够： 01 Lead-in Look! Our school is having a Volunteer Award Ceremony. These students have done great volunteer work. This is Li Hua. He has been a volunteer at the animal shelter. He started in 2023. So we can say: He has been a volunteer _______(since/for) 2023. since This is Wang Fang. She started volunteering two years ago. So we can say: She has been a volunteer ___(since/for) two years. for Today we are going to learn how to use "for" and "since" to talk about how long we have done volunteer work. since for 02 Presentation Watch a video Know something about 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. Read the sentences. How are for and since used differently? 4a Look at the table above and answer the following questions. What’s the difference between “for” and “since”? (e.g., for+ time period, since+ time point) Can you make a sentence with “for”? (e.g., I have studied English for 3 years.) Can you make a sentence with “since”? (e.g., I have lived here since 2020.) For & Since For & Since Learn the usage of the past continuous tense. But one of my friends has volunteered here for a long time. She has been a volunteer at a nursing home since last August. since后面接时间点，强调动作或状态的开始时间。 for后面接时间段，强调动作或状态的持续时间。 如何区分时间段和时间点呢？ Learn the usage of time point vs time period. 时间 5:30 five years three minutes 2015 May 5 two months 判断 易混点：时间点vs时间段 易混点：时间点vs时间段 时间点指的是具体的时间，比如1点、4月7日、2026年12月； 时间段指的是一段时间内，比如说三点到四点，中间这一个小时就是一段时间。 时间点 时间点 时间段 时间点 时间段 时间段 Fill in the blanks with for or since. 1．I have owned the toy bear ________ more than six years. 2．He has worked as a policeman ________ ten years. 3．They have worked here ________ June. 4．She has studied English ________ she was five. 5．We’ve known each other ________ we were primary school students. for for for since since Learn about the present perfect tense. 现在完成时 现在完成时表示动作或状态从过去某时开始，一直延续至今，还可能继续下去。这种用法称为“未完成用法”。此时常与for 或 since 引导的时间状语（从句）连用。 1. 现在完成时的含义 Learn about the structure of present perfect tense. 现在完成时的“未完成”用法 （1）现在完成时+for+一段时间 ▶ We have known each other for twenty years. 我们认识有二十年了。 （2）现在完成时+since+表示过去的时间点 ▶ Mr. Smith has worked here since 1984. 自从1984年史密斯先生就在这里工作。 （3）现在完成时+since+从句 ▶ I have lived here since I was born. 我从出生起就住在这儿。 Learn the continuous verbs and discontinuous verbs 延续性动词与非延续性动词 （1）含义： 延续性动词表示能够延续的动作，这种动作可以延续下去或产生持久影响。 非延续性动词也叫终止性动词、瞬间动词等，表示不能延续的动作，这种动作发生后即刻停止。 Learn the usage of continuous verbs and discontinuous verbs. 用法 ①常见的延续性动词有 learn、work、live、know、walk、watch、sleep、stay、wait、keep 等。延续性动词可以与表示一段时间的状语连用，如 how long、for+时间段、since+过去的时间点、since 引导的时间状语从句（一般过去时）、since+一段时间+ago 等。 ②常见的非延续性动词有 open、close、die、begin、come、go、borrow、lend、buy、move 等，表示某个动作的结果还存在，但不能与表示一段时间的状语连用。有些非延续性动词可以用延续性动词替换。 ③在否定句中，非延续性动词可以与表示一段时间的状语连用。 e.g. I haven’t heard from my friend for three weeks. 我已经有三个星期没有收到我朋友的来信了。 非延续性动词转换为延续性动词的方法： 将非延续性动词转化为“be+形容词或副词”，这样才能和时间段连用： 非延续性动词 延续性表达 非延续性动词 延续性表达 非延续性动词 延续性表达 begin / start （开始） be on go there （去那里） be there come back （回来） be back come here （来这里） be here Open （开业） be open Close （关门） be closed Die （死） be dead marry （结婚） be married Finish （结束） be over go to bed （上床睡觉） be in bed leave （离开） be away return （回来） be back get out （出去） be out fall asleep （入睡） be asleep lose （丢失） be lost fall ill （生病） be ill get / arrive / reach （到达） be in/at join / become （参加，加入） be in / be a member of 练习游戏→ 03 Practice 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 have 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. has taught for have been since for Since has helped has trained since She has worked at the nursing home ______ two months. He has been a volunteer ______ he was in primary school. They have collected 500 bottles ______ last Friday. I haven’t seen my friend ______ a long time. Our club has helped the elderly ______ 2021. The boy has had this toy ______ three years. We have planted over 200 trees ______ the project started. She has known her best friend ______ she was five. The volunteers have been busy ______ several hours. I have wanted to be a volunteer ______ I watched that movie. Fill in the blanks by using “for” or “since”. for since since for since for since since for since I _______________ (volunteer) at this hospital since 2021. She ________ (start) volunteering two years ago. They __________ (be) friends for ten years. He ________ (join) the volunteer group last month. We _____________ (clean) up the beach since 8 a.m. this morning. My sister ____________ (not / eat) anything since breakfast. The old man __________ (live) in this village for 60 years. I _____ (see) that movie when I was ten. They _____________ (collect) over 1,000 books so far. She __________ (be) a volunteer at the museum since she graduated. 判断并填写正确的动词形式（现在完成时或一般过去时） have volunteered started have been joined have cleaned hasn't eaten has lived saw have collected has been 判断句子正误，对的打√，错的打×并改正 1. I have joined the club for 2 years. 2. The film has started since 7:00. 3. He has left home for a week. 4. I have borrowed the book for three days. ❌join是短暂性动词 ❌start是短暂性动词 ❌leave是短暂性动词 ❌borrow是短暂性动词 ✅ I have been in the club for 2 years. ✅ The film has been on since 7:00. ✅ He has been away from home for a week. ✅ I have kept the book for three days. 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 04 Production The Volunteer Award Ceremony continues. Now let's have a "Volunteer Experience Sharing" session. Share your volunteer experience with your group members. Where do you volunteer? (at an animal shelter / a nursing home / a clean-up organization...) What do you do there? How long have you been a volunteer? (使用 for 或 since) How do you feel? Production 同伴合作或小组合作完成 Work in groups. Interview your groupmates using the questions below. 4d Hello everyone. I'm ______. I have been a volunteer at ______ for / since ______. I help to ______. I have learned that ______. I feel ______. Production 同伴合作或小组合作完成 Share the answers with the class. 4d Acting Pronunciation Fluency 05 Summary Summary Unit 8 Making a Difference (Section A Grammar Focus) 06 Language points Let's learn and take notes. since /sɪns/ prep. & conj. 自从；自……以来 用法：后接时间点或过去时间状语从句，主句用现在完成时。 常见搭配：since 2019, since last week, since I was a child 辨析：since + 时间点；for + 时间段。 词 讲 练 She has been a volunteer since last August. He has worked here since he left school. 例 填空：I have been a teacher ______ 2015. 翻译：自从他加入这个组织以来，他帮助了许多人。 since He has helped many people since he joined this organization. Let's learn and take notes. charity /ˈtʃærəti/ n. 慈善机构（或组织）；慈善事业 固定搭配：charity match（慈善比赛），donate to charity（向慈善机构捐款） 词性转换：形容词 charitable（慈善的；仁慈的） 用法：可数或不可数名词。 词 讲 练 They were at a stadium for a charity match. He often gives money to charity. 例 填空：The concert raised money for a local ______. 翻译：这家慈善机构帮助无家可归的人。 charity This charity helps homeless people. Let's learn and take notes. warmly /ˈwɔːmli/ adv. 热情地；温暖地 词性转换：形容词 warm（温暖的；热情的） 固定搭配：thank warmly（热情感谢），greet warmly（热情问候） 用法：副词修饰动词。 词 讲 练 They smiled and thanked me warmly. She warmly welcomed the guests. 例 填空：The old man smiled ______ at the children. 翻译：志愿者热情地帮助了游客。 warmly The volunteers helped the tourists warmly. Let's learn and take notes. help out v短语 分担工作；帮忙做 用法：动词短语，可带宾语 help sb. out。 固定搭配：help out with something（帮忙做某事） 同义表达：lend a hand 词 讲 练 I helped out at ten different sports events. She helped him out with his homework. 例 填空：Can you ____________ with the clean-up after the match? 翻译：我经常在养老院帮忙。 help out I often help out at the nursing home. 07 Exercise 一、选词填空。 My uncle has been a (1) ______ in the (2) ______ for five years. He also does volunteer work. He has taught in a (3) ______ school (4) ______ two years. He has helped out at a (5) ______ since last year. He (6) __________ at the charity every weekend. The children he teaches always smile (7) ______ at him. He (8) _________ a volunteer (9) ______ he was young. I think he is a great soldier because he always tries to help out (10) ______. soldier for since charity warmly help out primary soldier army be others army primary for charity helps out warmly has been since others 1. She has been a volunteer at a nursing home since last August. ——自从去年八月起，她就一直在养老院当志愿者。 2. I have made many new friends and I have even met many famous athletes. ——我交了很多新朋友，甚至还见过许多著名运动员。 3. They smiled and thanked me warmly. ——他们微笑着，热情地感谢了我。 4. 我在这家慈善机构帮忙已经有三年了。 ——I have helped out at this charity for three years. 5. 自从他加入军队以来，他交了许多朋友。 ——He has made many friends since he joined the army. 6. 士兵们热情地欢迎了这些孩子。 ——The soldiers welcomed the children warmly. 二、翻译。 08 Homework 基础作业：完成课本第84页4d的采访练习，用 for 和 since 写出三个句子，描述你组员的志愿者经历（或你了解的志愿者的经历）。 进阶作业：用 for 和 since 各造三个句子，描述你自己或他人的志愿者经历。 拓展作业：写一篇 60 词左右的短文，介绍一位你身边的志愿者（或你想象的志愿者），内容包括：在哪里志愿服务、做什么、服务了多久（用 for 或 since）、你的感受。 Homework Thank you for listening! Lavf58.29.100 Packed by Bilibili XCoder v2.0.2 ⏳ 非延续性动词 → 延续性表达 ⏳ 📚 配对挑战 · 巩固转换规则 📚 💡 规则： 非延续性动词不能与“时间段”连用 → 需转换为“be + 形容词/副词/介词短语”。 🎯 点击左边【原形动词】，再点击右边【延续性表达】，配对成功即可得分！全部配对完成即获胜。 🏆 配对成功 0 / 0 ⟳ 重新挑战 📌 非延续性动词短语 ✅ 延续性表达 (be + ...) 📖 📖 查看完整转换表 (点击展开/收起) 📖 📖 ✨ 课堂互动：两人一组，轮流配对，并造句说明转换后的延续用法 (e.g., The film has been on for ten minutes.) ✨ $