Unit 5 Grammar语法课件 2025-2026学年沪教版（2024）英语八年级上册

Unit 5 Going on an exchange trip Grammar By the end of this lesson, we will be able to : Objectives understand the meaning, form and use of the present perfect tense and its time expressions. 掌握现在完成时态及时间标志词的意义、结构及运用 ask my friends about their experiences using “Have you ever ...?” 用句式 “Have you ever ...?” 询问他人的经历 talk about my own experiences by using “I have already...” or “I have never...” 用句式 “I have already...” 和 “I have never...” 谈论个人经历 By the end of this lesson, we will be able to : Warm-up I have ever visited ... Your travel footprints Where have you ever visited in China? Warm-up I have ever visited ... , but I haven’t visited ... . Beijing Shanghai Hangzhou Sanya Xiamen Wenzhou What have the British students done in Beijing? I've watched videos about the Great Wall before. It's been a fantastic experience so far. I've learnt a bit of tai chi. The teachers have introduced us to Chinese painting as well. It's quite different from what I've learnt in my art classes back home. I haven't had much success yet. I've made many new friends. Explore the meaning When to use present perfect tense（现在完成时态）? We use present perfect tense to talk about (past/present) events with a connection to the (past/present). now future past Explore the meaning I've made many new friends. I haven't had much success yet. Let’s sum up the rules The structure of the present perfect: have / has (not) + past participle(过去分词) I've made many new friends. I haven't had much success yet. It's been a fantastic experience so far. 1.What is past paticiple (过去分词)？ 2.How will the structure change in different kinds of sentences? Explore the form Positive form Negative form Read the email on page 73 and pay attention to the words in bold. Fill in the blanks. do—done be—_______ learn—_______ show —_______ practise—_______ tell—_______ try —_______ been learnt shown practised told tried Explore the form Past participle of regular verbs Base form Simple past Past participle talk talked talked live lived lived study studied studied stop stopped stopped (1)一般动词，在词尾直接加“-ed ” rules (2)以不发音的“e”结尾，只在词尾加“d ” (3)以“辅音字母 + y ”结尾，改 "y" 为 "i" ，再加“-ed” (4)重读闭音节中，以“元音+辅音”结尾，先双写该辅音字母，再加“-ed” Base form Simple past Past participle do did done go went gone be was/were been break broke broken say said said spend spent spent Past participle of irregular verbs p142 - 143 Remember Practice Statement—Yes/No question Examples:I have been to the Great Wall.→ Have you been to the Great Wall? Eric has learnt a bit Chinese.→ Has Eric learnt a bit Chinese? I have been in Beijing for a week now. I have just learnt how to play Go. He has also shown me the medals he won. I have done lots of fun things so far. I have learnt some useful Chinese phrases. Our teacher has told us that we will do some Chinese painting. Wei has been to the UK. Have you been in Beijing for a week now? Have you just learnt how to play Go? Has he shown you the medals he won? Have you done lots of fun things so far? Have you learnt some useful Chinese phrases? Has your teacher told you that you will do some Chinese painting? Has Wei been to the UK? Answers： Yes, I/we/you/they have/haven’t. No, he/she/it has/hasn’t. Practice Statement—Wh-question Examples: Eric has learnt a bit Chinese.→ What has Eric learnt a bit Chinese? I have been in Beijing for a week now. Wei has been to the UK. How long have you been in Beijing ? Where have you been ? Wh-疑问词+have/has+主语+done...? Practice 1.How long has Eric been in Beijing? Eric has been in Beijing for a week now. 2.What is Eric’s host family like? They are friendly. 3.Who has taught him to play Go? His host brother, Wei. 4.What has Wei shown Eric? Wei has shown Eric the medals he won. 5.What have Eric and his British classmates learnt at the local school? They have learnt some useful Chinese phrases. 6.What will Eric learn next week? Chinese painting and tai chi. Read Eric’s email again and answer the questions. I'm excited to share my exchange trip to the UK! I (1) __________ (be) in the UK for two weeks already. So far, this trip (2) __________ (be) an amazing experience. The school I’m studying at is great. I (3) __________ (make) lots of friends here already. The classes are really interesting, and I (4) __________ (learn) a lot about British culture. My English (5) __________ (improve) a lot too, and I’m learning new words every day. There are lots of fun activities after school. We (6) __________ already __________(visit) several famous tourist spots, such as the Tower of London and Big Ben. I (7) __________ (have) so much fun during this trip, and I don’t want it to end. This experience (8) __________ really __________(change) my life! Practice have been has been have made have learnt has improved have visited have had has changed Conclusion Positive form Negative form Question form 肯定式： 否定式： 疑问句式： 主语+have / has + done... 主语+have / has not+done... Have/has+主语+done...? Wh-疑问词+have/has+主语+done...? Warm-up Are there mistakes in the following sentences? Correct the mistakes. (1) I have already finished my homework. (2) Have you ever been to Paris yet? (3) She has never tried sushi already. (4) Have they visited the museum yet? √ √ Explore the meaning already: 用于肯定句，表示动作已经完成（通常用于句中或句末）。 例句： I have already read this book. ever: 用于疑问句，询问是否曾经有过某种经历（通常用于句中）。 例句： Have you ever visited the Great Wall? never: 用于否定句，表示从未有过某种经历（通常用于句中）。 例句： I have never seen a dragon dance. yet: 用于疑问句或否定句，表示动作尚未完成（通常用于句末）。 例句： Have you finished your work yet? / I haven’t finished my work yet. When to use these time expressions? The time adverbial 现在完成时中常见的时间状语 现在完成时不能和过去的时间状语连用。 I have read the book yesterday. He hasn’t come last Monday. I have never spoken to a foreigner in 1980. Amy has gone with Lucy just now. × Rules point/period point/period before/after beginning/end What’s the difference between a point in time and a period of time? 5:30 five years three minutes 2015 May 5 two months a point in time a period of time a point in time a point in time a period of time a period of time since VS. for since:自……以来 since+过去的时间点 He has stayed here since 5 o’clock yesterday. since+时间段+ago He has stayed here since 5 hours ago. since+从句(动词用过去时) She has taught English since she came here. for:长达 for+时间段 He has kept the book for 2 weeks. What’s the difference between since and for? Practice have known for has been since hasn’t seen for I ________________ (be) in Australia for almost two weeks now, and I will fly home the day after tomorrow. This exchange trip ________________ (be) one of the most memorable experiences I have ever had! My first week was great. On my first day at school, I ________________ (made) several new friends. Last Saturday, they ________________ (show) me around town. For example, they ________________ (take) me to the local zoo, and then we went to a café. We ________________ (spend) hours chatting and sharing our hobbies and dreams. I’m staying with a great host family. They ________________ (treat) me like a part of the family. My host family are also very patient, and they are happy to answer all my questions. I ________________ (learn) so much about Australia from them! The food here is great, and I ________________ (try) lots of tasty dishes. Yesterday, my host family ________________ (have) a barbecue in the garden. It was really fun, and they even ________________ (teach) me how to cook meat on the barbecue. This exchange trip has truly broadened my horizons, and I feel much more confident and independent now. I hope I will have more chances to go on similar exchange trips in the future. have been showed took spent have treated have learnt had taught has been made have tried More practice Grammar in use ·Have you ever been to Australia/ Canada/Japan/India ...? ·Have you visited the Great Wall/...? ·How long have you stayed/been in ...? ·Have you ever eaten ...? … Answer the questions with already, yet, ever, never, since and for. Work in pairs. Think about your travelling experiences. Take turns asking and answering questions. Interviewee Interviewer Conclusion 现在完成时表示过去发生的动作与现在有关，指过去的动作对现在造成的影响、结果等。 already, yet, ever, never, since, for... 现在完成时 肯定句：主语 + have/has + done + 其他 否定句：主语 + haven't/hasn't + done + 其他 一般疑问句：Have/Has + 主语 + done + …？ 肯定答语：Yes, 主格代词 + have/has. 否定答语：No, 主格代词 + haven't/hasn't. 构成 定义 时间标志词 Key structure 1. Have you ever ....? 2. I have already... . / I have never... . Self-assessment 评价内容 评分（1–5） 1. 我能理解现在完成时的结构和意义。 1 2 3 4 5 2. 我能正确理解现在完成时和already, yet, ever, never, since, for等副词的连用。 1 2 3 4 5 3. 我能用现在完成时谈论经历。 1 2 3 4 5 Homework 基础作业 1. Read Eric’s email on Page 73 fluently. 2. Imagine you are Sarah. Please use the present perfect tense and write an email to your mum and tell her about your trip. Use the information in the passage on page 74 to help you. 拓展作业 Make a short video(3-5 minutes) to share your travelling experiences. Use the present perfect tense to describe what you have done, whom you have met, and your feeling. Then share with your classmates. I have seen that the world is a book, and those who do not travel read only one page. ——Saint Augustine Thank you ! Lavf59.16.100 Packed by Bilibili XCoder v2.0.2 $