(
课件网) 2024年牛津版 英语（八年级上） Unit 5 Section 2 Grammar Going on an exchange trip 学习目标 I can describe things that students can do on an exchange trip. talk about the experiences of other cultures. express my opinions about the benefits of exchange trips. understand and cope with culture shock. 01 新 课 导 入 03 应 用 实 践 06 回 顾 总 结 07 随 堂 小 练 02 学 习 理 解 04 迁 移 创 新 05 考 点 速 递 学习内容 新课导入 1 Look and say! You can use the structure “have + pp.” to describe the following pictures like this “I have stayed with a host family for 2 weeks.” stay with a host family I have stayed with a host family for 2 weeks.” visit, places of interest , such as the Forbidden City be in Beijing for 2 weeks now. I have been in Beijing for 2 weeks now. I have visited many places of interest in Beijing. such as the Forbidden City make new friends enjoy different kinds of food. I have made many new friends here. I have enjoyed different kinds of food. do lots of fun things, so far! learn some useful Chinese phrases at a local school with my British classmates I have done lots of fun things so far. I have learnt some useful Chinese phrases at a local school with my British classmates 学习理解 02 A The present perfect We use the present perfect to talk about past events with a connection to the present. Eric has been in Beijing for a week. He has written an email to tell his mother about his exchange experience. Read the email and pay attention to the words Dear Mum, I have been in Beijing for a week now. I’m staying with my host family and they are friendly. I have just learnt how to play Go. My host brother Wei taught me the rules. 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 at a local school with my British classmates. I haven't practised them yet but I will soon! Our teacher has told us we will do some Chinese painting and tai chi next week. I haven't tried tai chi before, so I am excited! By the way, Wei hasn't been to the UK. I'd like to invite him to London during summer holiday. What do you think My exchange trip in Beijing Mum We form the present perfect with have / has + the past participle of the main verb. Look ! I / You / We / They have = I’ve / You've / We've / They've He / She / It has = He's / She's / It's have not = haven’t has not = hasn't The past participle of a regular verb is usually the same as its past tense form. You can find the past participles of some irregular verbs on pages 142-143. 现在完成时 一、用法： 1.表示动作发生在过去，并对现在有影响。(常与already, yet, never, ever, just等词连用) 2.表示从过去一直持续到现在的动作或状态。(常与for, since引导的时间短语或从句连用) 二、结构： 肯定句：have/has+ V-ed 注意：该句式中的have或has是助动词，has用于第三人称单数，其它人称一律用have。 否定句：haven’t (hasn’t)＋过去分词 一般疑问句：把助动词 have或has提到主语之前 回答用 Yes, …hav ... ...
