Unit 7 Section A(4a-4d) 课件2025-2026学年人教版八年级英语下册

该初中英语课件聚焦现在完成时的结构、用法及与一般过去时的区别，通过Pre-learning的真实对话填空（如“Has Peter ever heard of this book?”）导入，搭建从一般过去时到现在完成时的学习支架，衔接前后知识脉络。 其亮点在于融合语言能力、思维品质和文化意识，通过4d采访活动提升语言运用，对比语法区别培养分析能力，4c阅读不同国家书籍的练习渗透跨文化理解。采用任务型教学和表格归纳法，帮助学生掌握语法并提升学习能力，教师可直接使用结构化材料提高教学效率。

Section A 4a—4d Unit 7 A Good Read Learning Objectives In this lesson you will: 1. master the structure and usage of present perfect tense. 2. differentiate between simple past tense and present perfect tense. 3. apply the target grammar in real-life situations. Pre-learning Fill in the blanks. ——彼得，你决定你的报告用哪本书了吗？ ——是的，我决定了。 —_______ you _________ on a book for your report, Peter? —Yes, I _________. ——彼得听说过这本书吗？ ——没有，他从没听说过。 —Has Peter ______ heard of this book? —No, he’s _______ heard of it. Have decided have ever never ——陈杰读过这本书了吗？ ——没有，但她已经从图书馆借走了。 —________ Chen Jie ________ this book ________? —No, but she’s _______ borrowed it from the library. ——你最近读了什么书? ——我刚刚读完《三国演义》。 —What _________ you read _________? —I’ve _______ finished The Romance of the Three Kingdoms. Has read already yet have just recently Read the sentences and underline the present perfect forms of the verbs. Pay attention to the meanings of the bold words. 4a 规则动词的过去分词和过去式构成相同。 While-learning 现在完成时（I） 现在完成时表示过去发生或已经完成的动作对现在造成的影响或结果。 定义 结构 现在完成时（I） 现在完成时是由“助动词 have/has+过去分词”构成的，规则动词的过去分词与其过去式相同，不规则动词的过去分词则须加强记忆。 过去分词的变化规则 规则动词的过去分词与过去式的构成相同。 不规则动词的过去分词须特殊记忆。例如： 规则动词 不规则动词 protect—protected—protected dance—danced—danced try—tried—tried stop—stopped—stopped put—put—put have—had—had do—did—done AAA型 ABB型 ABC型 现在完成时不规则动词变化（部分） 现在式 过去式 过去分词 bring brought buy bought bought catch caught feel felt choose chose chosen find found found read read meet met met brought caught felt read [red] [red] say said said 现在式 过去式 过去分词 be was/were been become became become begin began begun break broke broken choose chose chosen come came come drink drank drunk drive drove driven fly flew flown give gave given 肯定句：主语 + have/has + 过去分词 + 其他. 否定句：主语 + have/has + not + 过去分词 + 其他. 一般疑问句：Have/Has + 主语 + 过去分词 + 其他？ 特殊疑问句：疑问词 + have/has + 主语 + 过去分词 + 其他？ 现在完成时的句型转换 语法秘籍 标志词 常用句型 含义与功能 ever never yet already just 疑问句 肯定句 疑问句/否定句 肯定句 肯定句 曾经，询问经历 从未，否定经历 刚刚，动作刚完成 已经，动作完成 还，迄今（否）；已经（疑） 现在完成时的时间标志词 already yet just 意为“刚刚”，常用于肯定句中，放在助动词have/has之后，过去分词之前 already, yet, never, ever与just 在现在完成时中的用法 意为“已经”，常用于肯定句中，放在助动词have/has之后，过去分词之前 Amy has already finished her book report. 常用于疑问句或否定句中、位于句末。用于疑问句中时，意为“已经”；用于否定句中时，意为“还（未）；尚（未）” Has Amy finished her book report yet? Amy has not finished her book report yet. Amy has just finished her book report. ever never 意为“从不；从未”，用于现在完成时中时，表示否定，位于助动词have/has之后，过去分词之前 I’ve never got lost in this city. 意为“曾经”，常用于现在完成时的一般疑问句和肯定句中 Have you ever got lost in this city? I’ve ever got lost in this city. already, yet, never, ever与just 在现在完成时中的用法 现在完成时的标志词 for + 一段时间 / since + 开始时间(从句) already / just / never / yet / ever so far / in the past few years 语法秘籍 现在完成时与一般过去时的区别 现在完成时与一般过去时都表示在过去做的动作，但现在完成时强调这一动作与现在的关系，如对现在产生的结果、影响等。一般过去时只表示过去的事实，不表示和现在的关系。 一般过去时 He closed the window. 只叙述他过去做过“关窗户”这个动作，现在窗户有也许是开的，也许是关的。 现在完成时 He has closed the window. 这个句子包含了两个意思：一是他曾经关了窗户（He once closed the window.)；二是强调动作与现在的关系，即现在这扇窗户仍然是关着的（Now the window is closed.) 现在完成时 一般过去时 用法 标志词 只表示过去的动作或状态，与现在无关 表示过去发生的某一动作对现在造成的影响或结果，强调的是现在的情况 常和already, yet, never, ever, just, so far, since, for等连用 常和yesterday, last week, just now, two days ago等具体的表示过去的时间状语连用 A: _________ you__________ (finish) homework? B: Yes, I have. A: When_________ you___________ (finish) it? B: I__________ (finish) it at 19:00. A: _________ you___________ (send) the letter to your cousin yet? B: Yes, I___________ (send) it last month. Have finished finished did finish Have sent sent Fill in the blanks. 4b Complete the conversations with ever, never, just, already, or yet. 1. A: Have you _______ heard of the book The Little Prince? B: No, I’ve _______ heard of it. A: I’ve _______ finished reading it. It's such a simple story, but you can learn a lot from it! 2. A: Have you chosen a book for your book report _______? B: Yes, I've chosen The Little Match Girl. It's such a sad story, but I love it. I've _______ started writing my report. ever never already yet already 3. A: I've _______ read a classic novel before. Could you recommend one? B: Well, I’ve _______ finished Outlaws of the Marsh. It's really good! A: Oh, thanks! Could I borrow it? B: Sure! never just 4c Complete the passage with the simple past or present perfect forms of the verbs in brackets. ______ you ever _______ (try) to read books from different countries? At the start of this year, I _______ (decide) to read books from as many countries as possible. I _______ (begin) with The Adventures of Tom Sawyer. Now I _______already _______ (read) twenty different books. These books _______ (teach) me a lot about other cultures and societies, and they ________ (allow) me to see the world differently. In the past, I only _______ (know) the names of different countries, but now I understand them a little bit better. This experience has been amazing so far. I never _______ (realize) how big our world really is! Have tried decided began have read taught allowed knew realized Interview your classmates and find out who has done these activities. 4d · read all four Chinese literary classics · watched a movie based on a novel · read a book in a different language · read a book more than twice · read a book with more than 500 pages · joined a reading club Interview 22 一、用所给单词的正确形式填空。 1. The film is very moving and it is _________ (base) on a real story. 2. Have you ever _________ (hear) of this book? 3. I ______________ (recommend) the book to my friend. Exercises based heard recommended 二、将下列英文翻译成中文。 1. Has Peter ever heard of this book? ________________________________ 2. Could you recommend one book?__________________________________ 3. Have you ever tried to read books from different countries? ____________________________________ 彼得听说过这本书吗？ 你能推荐一本书吗？ 你曾经尝试阅读来自不同国家的书吗？ 23 1. Remember the grammar points we’ve learnt today. 2. Try to make five sentences with the present perfect tense. 3. Finish the exercises after class. Homework $