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课件网) Grammar Unit 1 Past and present 学 习 目 标 掌握本课节新单词及短语:yet, recently, past 1 3 理解并运用常和现在完成时连用的表示时间的词汇。 掌握现在完成时的基本结构、用法和动词的过去分词变化规则; 能够在语境中正确运用现在完成时。 2 课 堂 导 入 Watch a video and pay attention to what they said. 1. I’ve lived here since I was born. 2. Have you ever moved house 3. …and we’ve lived in this area since then. 4. Has the town changed a lot over the years Now the government has turned part of the town centre into a new park. 6. However, most of my old friends have moved away. It has become impossible for us to see each other as often as before. Sentences with the present perfect tense in the video. I've just eaten it. You've changed. You’ve eaten my food Have you seen my food Can you find more sentences with "have/ has+ done" in Welcome to the unit Pre-task: More examples When do we use the present perfect tense While-task 1: Learn by yourself Ⅰ. 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,一直持续到现在的动作。 for: 后接一段时间,如:for three years, for a long time… I have known you for a long time. since:自从… …,后接过去的时间点/动作。 since last year, since I came here,… I have not seen him since we met last week. 常用的时间状语有: A B I _____ English _____. 2.我已经学了10多年的英语。 have learned for over ten years 1.我认识李雷三年了. I’ve known Li Lei _____. =I’ve known Li Lei_____. for three years since three years ago Practice: Finish the sentences Ⅱ. We use the present perfect tense to talk about an action that happened in the past and has a connection with the present. 表示过去发生的或已完成的动作对现在造成的影响或结果。 Past present Eddie has eaten Millie’s food. 1. I have just opened the door. (The door is not closed now.) 2. Jack has already finished his homework. (Jack is free now. ) Look at my bowl. Who _____ my dumplings That’s too bad! 2. Jack _____ home. Don’t worry. 3. I _____ the key to the door, so I have to wait till Mum comes back. B. has eaten A. ate A. arrived B. has just arrived A. have lost B. lose Practice: Choose the correct ones. B B A (1)already “已经”,放在肯定句句中或句末; (2)yet放在疑问句句尾时,表示“已经”; 放在否定句句尾时,表示“还(没,不)” (3)ever “曾经”,用于肯定句、疑问句或否定句中; (4)never “从来没有”,表示否定意义。 (5) just “刚刚”,用于陈述句中; (6) recently “近来”,可用于句首、句中或句末。 常用的时间状语有: (1)I have _____ come back from the supermarket. (for, just, since) (2) I have _____ been to Chengdu. (for, never, yet) (3) He has worked there _____he left school. (already, just, since) (4) She has known Sam_____ nine years. (for, never, since) (5) Have you _____ ridden a horse (ever, for, yet) just never since for ever Fill in the blanks with the proper words given. Ⅲ.We also use the present perfect tense to talk abo ... ...