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

Unit 1 Past and present Grammar A daily report So, she has learned English for two years. Her name is Wu. She’s 4. She started to learn English when she was 2. 现在完成时-含义 2 years old 4 years old 还要继续学… 1.过去发生的动作持续到了现在,可能继续发展下去。 3 yesterday Now Sorry. 2.过去发生的动作对现在造成了影响或结果。 现在完成时-含义 Wu:Let’s go to watch this film. Ma: Sorry, I watched the film in the class. I have watched it already. 4 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。 Bill visited Australia in 2002 and 2020. Bill has been to Australia twice. Past Present 现在完成时的意义 研学随练展收获 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. 1.She's come first three times. 2.There have been many buildings in my town. 3.I can’t get in the house. I’ve lost my keys. 4.She has lived in Liverpool all her life. 5.How clean! Who has cleaned the room? 6.We have seen the film twice. Group the following sentences according to the usages. Usage 1 Usage 2 Usage 3 (1,6) (3,5) (2,4) Structure of the present perfect tense + done 主语 have/has I haven’t/have not finished my homework yet. You haven’t/have not answered his question. We haven’t/have not worked here. They haven’t/have not seen each other for years. He hasn’t/has not been home for six years. She hasn’t/has not found her book. It hasn’t/has not started yet. Present perfect tense—Negative forms haven’t/have not hasn’t/has not +done Present perfect tense—Yes/No questions Have/Has + done ... ? + sb Have I ever seen it before? Have you finished your work recently? Have we done it correctly? Have they gone to work yet? Has he worked here long? Has she already seen her parents? Has it worked properly? Yes, sb has/have. No, sb has/haven’t. 现在完成时表示过去发生或已经完成的某一动作对现在造成的影响或结果。(汉语中常用“已经”、“过”、“了”等表达) 通常与表示包括现在在内的时间副词just(句中), already(句中,句末), before(句末), yet(句末), never(句中), ever(句中),recently(句末)等状语连用。例如: 1.Eddie has j