Unit 1 Past and Present Grammar 课件 2023-2024学年牛津译林版八年级英语下册

牛津译林版八年级下册 Unit 1 Past and Present Grammar Learning objectives After learning this lesson, you can: 1. know the meanings of the present perfect tense; 2. make positive, negative statements, ask and answer questions in the present perfect tense; 3. form the past participles of regular verbs and some irregular verbs; 4. use proper time expressions with the present perfect tense. Presentation 1. We use the present perfect tense to talk about an action that started in the past and continues to the present. 表示过去开始持续到现在的动作。 现在完成时的意义(meaning) 观察视频中的几个句子: 1.You’ve done a good job! 2.You have already come back. 3.You haven’t complained so much before. 4.Has something happend? 5.What have you done lately? 我们已经学英语八年了。 We have learnt English for eight years. 他在我们学校教书已有十年了。 He has taught in our school for ten years. 自上个星期以来他一直很忙。 He has been busy since last week. 他毕业以后就一直为我们工作。 He has worked for us since he left school/ graduated. since or for? We haven’t seen each other _ a long time. His father has been in the Party _ 10 years ago. The film has been on _ 20 minutes. Mr Green has worked here _ he came to China. His grandparents have been dead _ several years. We have known each other _ we met last time. for since for since for since 2. We use the present perfect tense to talk about an action that happened in the past and has a connection with the present. 表示发生在过去、对现在有影响的动作。 现在完成时的意义(meaning) 他已离开这个城市。 He has already left the city. (结果:他不在这个城市了。) 我最近已经看过这部电影了。 I have seen this film recently. (结果:我不想再看了。) 他刚刚已把工作做完了。 He has just finished his work. (结果:他现在可以做其他的事了。) 他还没有把那本书还给我。 He has not returned the book to me yet. (结果:我现在没有书看。) 3. We use the present perfect tense to talk about how many times an acton has happened till now. 表示到目前为止一个动作发生(重复)的次数。 现在完成时的意义(meaning) Bill visited Australia in 2002 and 2022. Bill has been to Australia twice. It is the first time that I have been here. I have already read this book many times. She’s moved house three times. They have worked for this