Unit 5 Educational Exchanges第三课时Grammar 课件2023-2024学年沪教牛津版（广州沈阳通用）八年级英语上册

牛津深圳·广州版 八年级上 Unit 5 Educational Exchanges Grammar Content 01 03 05 Learning objectives 02 Lead -in Presentation Practice 02 02 Summary Homework Learning objects 1. 掌握现在完成时的结构和用法。 2. 掌握already, yet, ever 和never的用法。 3. 能辨析since和 for,have been to 和have gone to。 4. 能够正确运用现在完成时描述活动。 Lead in Hello, everyone. I am Sarah and I will come to Xinhua Junior High School as an exchange student in December. I have never been to China before. So to prepare for my educational exchange, I have already read a lot of books to learn more about China. Besides, I have also taken courses on Mandarin since March. Though I haven’t got much success in mastering the language yet, I will keep trying and I can understand as well as speak some simple everyday words. I look forward to my visit to China. Lead in 1. Is this Sarah’s first visit to China? 2. What has Sarah done to get ready for her exchange? 3. Has Sarah mastered Mandarin successfully? Yes. She has never been to China before. She has read many books and taken courses on Mandarin. No, she hasn't got much success yet. Hello, everyone. I am Sarah and I will come to Xinhua Junior High School as an exchange student in December. I have never been to China before. So to prepare for my educational exchange, I have already read a lot of books to learn more about China. Besides, I have also taken courses on Mandarin since March. Though I haven’t got much success in mastering the language yet, I will keep trying and I can understand as well as speak some simple everyday words. I look forward to my visit to China. Lead in Presentation A The present perfect tense We use the present perfect tense: ① to talk about things that happened in the past but have a connection to the present in some way. Sarah has already read a lot of books to learn more about China. Sarah has taken courses on Mandarin since March. ② to talk about things that happened in the past but last up to now Sarah has never been to China before. Sarah has already read a lot of book