Unit 8 Section A 4a-4d Grammar Focus 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核心用法，涵盖for/since时间状语、瞬间动词与延续性动词转换及have been to/have gone to/have been in区别。通过情境对话、时间线标注（past-now）导入，从基础填空到动词转换再到用法辨析，构建递进式学习支架。 其亮点在于情境化任务设计与对比辨析结合，如“动物收容所志愿者”对话练习提升语言能力，瞬间动词转换表（buy→have等）培养思维品质。分层练习（填空、句子完成、时态分类）助力学生系统掌握，教师可直接利用结构化内容提高教学效率。

此课件为蜗牛英语圈原创课件，已申请版权，侵权必究法律责任 Section A 4a-4d Unit8 Making a Difference Grammar Focus You are at school now. You got to school 2 days ago. 1.You have been in school for 2 days. I have a bottle. I bought it in 2025. 2.I have had the bottle since 2025. You are at school now. You got to school 2 days ago. 1.You have been in school for 2 days. I have a bottle. I bought it in 2025. 2.I have had the bottle since 2025. He lives in Guizhou. He started to live in Guizhou when he was born. 3.He has lived in Guizhou since he was born. You are at school now. You got to school 2 days ago. 1.You have been in school for 2 days. I have a bottle. I bought it in 2025. 2.I have had the bottle since 2025. He lives in Guizhou. He started to live in Guizhou when he was born. 3.He has lived in Guizhou since he was born. We met each other in 2024. 4. We have known each other since 2 years ago. for 2 years. You are at school now. You got to school 2 days ago. 1.You have been in school for 2 days. I have a bottle. I bought it in 2025. 2.I have had the bottle since 2025. He lives in Guizhou. He started to live in Guizhou when he was born. 3.He has lived in Guizhou since he was born. We met each other in 2024. 4. We have known each other since 2 years ago. for 2 years. 此课件为蜗牛英语圈原创课件，已申请版权，侵权必究法律责任 Read the sentences. How are for and since used differently? 4a 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. for + 时间段 since + 开始时间点 此课件为蜗牛英语圈原创课件，已申请版权，侵权必究法律责任 ________ 3 weeks ________ last Sunday ________ we met ________ several months ________ 2020 ________ her 9th birthday ________ 3 days ________ 3 days ago for for since for since since since since Fill in with for or since 此课件为蜗牛英语圈原创课件，已申请版权，侵权必究法律责任 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. /ˈɑːmi/ n.军队 /ˈsəʊldʒə(r)/ n.军人；士兵 /ˈpraɪməri/ adj. 小学教育的；首要的 1.You have been in school for 2 days. 2.I have had the bottle since 2025. 3.He has lived in Guizhou since he was born. 4. We have known each other since 2 years ago. for 2 years. 对划线部分提问 How long have you been in school? How long have you had the bottle? How long has he lived in Guizhou? How long have you known each other? 此课件为蜗牛英语圈原创课件，已申请版权，侵权必究法律责任 瞬间动词 &延续性动词 他已经死了。 He has already died . 他已经死了5年了。 1.动作发生在过去对现在造成了影响（现在人没了） He has died for 5 years . 瞬间动词 die be dead He has been dead for 5 years. for ＋一段时间 He has been dead since 5 years ago. since ＋时间点 与how long, for 或者 since搭配使用在现在 完成时中的动词， 动词必须为延续性动词 2.动作发生在过去，状态一直持续到现在。 此课件为蜗牛英语圈原创课件，已申请版权，侵权必究法律责任 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 此课件为蜗牛英语圈原创课件，已申请版权，侵权必究法律责任 非延续性动词如何转换成延续性动词 buy —— borrow —— put on —— catch/get a cold —— come/go/become —— ① 用相应的延续性动词 have keep wear have a cold be She has already bought the bike. She has had the bike for 2 years . 她已经买了这辆自行车。________________________________________________ 这辆自行车她已经买了两年了。____________________________________________ 此课件为蜗牛英语圈原创课件，已申请版权，侵权必究法律责任 Complete the passage with the correct forms of the verbs in brackets. 4c 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. Look and answer. What tenses do the verbs use? ___________ tense ___________ tense Simple past Present perfect 此课件为蜗牛英语圈原创课件，已申请版权，侵权必究法律责任 Read the sentences. How are for and since used differently? 4a 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. 去过，已经回来了 1. have been to： 去了（已回） 2. have gone to：去了未回 （未回） 3. have been in：在某地呆了多久 此课件为蜗牛英语圈原创课件，已申请版权，侵权必究法律责任 have gone to / have been to / have been in(at)区别 have been to ＋地点 去过某地 已经回来了 现在还没有回来了 have gone to ＋地点 去了某地 一直在那里待 在某地呆 一段时间 in ＋大地点 at ＋小地点 此课件为蜗牛英语圈原创课件，已申请版权，侵权必究法律责任 have been to, have gone to, have been in/at 1. —Where is Jim? —He ________________ the supermarket. 2. He ________________ Beijing for half a month. 3. —____ you ever ____________ the West Lake? —Yes, three times. 4. —How long ___________ your mother ________ Nanjing? —Since last year. has been in has gone to Have been to has been in Practice $