Unit 1 The Changing World Section A Grammar Focus课件2026-2027学年人教版英语九年级上册

该初中英语课件聚焦Unit 1 "The Changing World"第三课时语法，核心知识点为used to+动词原形、一般过去时与现在完成时的用法及区分。课堂通过花江峡谷大桥视频、过去与现在看医生的图片对比导入，结合贵州村庄变化情境，搭建从旧知（一般过去时）到新知的学习支架，帮助学生理解时态在“变化”主题中的功能差异。 其亮点在于以真实情境（贵州交通发展）和辩证讨论培养文化意识（家乡自豪感）与思维品质（对比分析时态），通过歌曲记忆不规则过去分词、图表对比（时间轴、标志词表格）提升学习能力。实例有对话和短文填空综合运用语法，视频图片增强直观性，助力学生在实践中掌握语法，教师可高效开展教学。

Unit 1 The Changing World 第三课时 Section A Grammar Focus Learning Objectives 通过本节课的学习，学生能够： 1.能通过观察，识别并归纳核心语法结构：used to + 动词原形（过去习惯 / 状态）和现在完成时（have/has + 过去分词）的用法及标志词（yet, ever, just, for, since）。能区分 used to do、一般过去时与现在完成时的不同语境与含义，理解它们在描述 “变化” 主题中的功能差异。（学习理解）。 2.能独立完成 4b 对话填空，4c 短文填空，综合运用 used to 和现在完成时，描述过去与现在的对比变化。（应用实践） 3.能创造性地运用本课语法，对 “交通发展与生活改善” 形成辩证的价值理解，并用英语表达对家乡发展的自豪感。（迁移创新）。 Watch a video Look at the following pictures. How did people see a doctor in the past? What about now? In the past, people used to walk for hours to see a doctor. Now, they have built a new hospital near the village. 4 能够区分并正确使用一般过去时、used to 和现在完成时； 能在对话和短文中根据时间状语和语境选择正确的动词形式； 理解时态变化如何体现“过去 vs 现在”的对比。 1. 一般过去时的意义 （1）表示过去某个时间或某一段时间内发生的动作或存在的状态，常和表示过去的时间状语连用，如 yesterday、last night、in 1990、two days ago 等。 e.g. He got up early yesterday. I visited my grandparents last week. （2）也可表示过去经常或反复发生的动作，常和 often、always 等表示频度的状语连用。 e.g. He always went to work by bus last year. 一般过去时 The life of people in Guizhou has changed a lot! Look! This is a picture of a village in Guizhou. Let’s find out the changes there. Past now 含be动词的一般过去时 含实义动词的一般过去时 肯定句 主语 + was / were + 其他. 主语 + 动词过去式 + 其他. 否定句 主语 + was / were + not + 其他. 主语 + didn't + 动词原形 + 其他. 一般疑问句 Was / Were + 主语 + 其他? Did + 主语 + 动词原形 +其他? 肯定回答 Yes, 主语 + was / were. Yes, 主语 + did. 否定回答 No, 主语 + wasn't / weren't. No, 主语 + didn't. 特殊疑问句 疑问词 + was / were + 主语 + 其他? 疑问词(主语who除外) + did + 主语 + 动词原形 + 其他? 2. 一般过去时的构成 9 now What did the village look like in the past? Can you use 'used to' to describe it? Past There _______ be rough roads. The hills _______ be covered with sand. used to used to He became a good friend of your grandfather about 20 years ago. They haven’t seen each other for ages! We used to have to travel far to see a doctor. Our village has just built a new hospital. Many people used to work in big cities. Now, more of them have come back to live and work here. Look at the sentences and find the time words or time clues. used to... 表“过去常常，现在不再……”无明确时间 现在完成时的意义 现在完成时可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。 e.g. I have done the dishes.    (强调餐具已经洗干净了) Sam has found a good way to solve the problem. (强调已经找到了解决问题的方法) 现在完成时 一般过去时 现在完成时 What time words do we often use with the simple past and the present perfect? (1)ago及ago词组 (2)yesterday及yesterday词组 (3)last及last词组 (4)just now, in the past, in 1920等 (5)once upon a time (1)already, ever, never, just, yet, still (2)recently, lately, so far, up to/till now (3)in the past/last three years/..., since 1998, since+时间点 (4)for three years, for+一段时间 一首歌曲帮你快速记忆 不规则变化的过去分词 2. 现在完成时的构成 肯定句：主语 + have / has +动词过去分词 + 其他 否定句：主语 + have / has + not + 动词过去分词 + 其他 一般疑问句及回答：Have/Has + 主语 + 动词过去分词 + 其他    肯定回答：Yes，主语 + have / has 否定回答：No，主语 + haven’t / hasn’t 特殊疑问句：特殊疑问词 + have / has + 主语 + 动词过去分词+ 其他？ Sentence Yes / No / Not now 1. He became a friend 20 years ago. 2. They haven’t seen each other for ages. 3. We used to travel far. 4. The village has just built a hospital. 5. People used to work in big cities. 6. They have come back now. Does the action still happen now, or is it finished? No（已结束） Not now（到现在还没见） Not now（现在不这样了） Yes（医院现在存在） Not now（现在不这样了） Yes（他们现在在这里） 如何表达“过去”？ 一般过去时 vs 现在完成时 vs used to 注意: 现在完成时强调过去动作对现在造成的影响，而一般过去时单纯描述过去发生的动作。 时态 / 结构 特点 与现在的关系 例句 一般过去时 有明确过去时间 ❌ 动作已结束，与现在无关 He became a friend 20 years ago. 现在完成时 时间不明确, 常与 for, since, just, already 等连用 ✅ 对现在有影响 / 持续到现在 They haven’t seen each other for ages. used to + do 无明确时间，表过去的习惯 ⏪ 过去常常，现在不再❌ We used to travel far. (1) already, yet, just, ever, never, before, recently/lately(速记口诀：已刚曾未还，近来以前全)等， 这类标志词表示“已经、刚刚、曾经、还未”等含义。 (2) for＋时间段：表示动作持续了多久 或since＋时间点/从句：表示从某个时间点开始 so far/up to now/until now到目前为止 these days/in the past few years这些天/在过去几年里 (速记口诀：自从到目前，过去这些天) 这类词通常表示“从过去到现在”的时间跨度。 3.现在完成时的标志词 肯定句：主语 + have/ has + 过去分词+其他 否定句:主语+haven’t/hasn’t ( have/has not) +过去分词+其他 一般疑问句:—Have / Has+主语+过去分词+其他? —Yes,主语+have/has./No,主语+haven’t/hasn’t. 特殊疑问句:特殊疑问词(不是主语)+have/has+主语+过去分词+其他 特殊疑问词(是主语)+have/has+过去分词+其他 现在完成时的句式 人生经历（到目前为止） 一般过去时：某次特定过去经历，带时间 I went to Japan in 2022. 2022 年我去过日本。 现在完成时：泛指人生经历，无具体时间 I have been to Japan twice. 我去过日本两次。（至今为止的经历） 表示过去某个时间或某段时间发生的动作或存在的状态,也可以表示过去经常或反复发生的动作。 谓语动词部分要用动词的过去式。 一般过去时 意义: 谓语动词形式 yesterday, the day before yesterday, …ago, …later, just now, at that moment, last…, in 2001, in the past, every day last year等。 标志词 21 图解助记 动作在过去已结束，与现在无关 动作从过去持续到现在，对现在有影响 A: _______ you ______ (be) to the new library yet? B: No, I __________ (not know) there was a new library. When did it ______ (open)? A: It ______ (open) last Friday. I ______ (go) there with my grandpa on Saturday night. B: ____ you ____ (like) it? A: Of course! It’s the most high-tech library I ____ ever ______ (visit). B: Oh, what ____ you ____ (see) there? A: There are sections with books about science and Chinese culture, as well as a huge section with children’s books. I also ____ (read) some digital books on the computer. My grandpa ______ (listen) to some audio books because he can’t see well. B: Cool! I ________ (bring) my little brother there tomorrow. Complete the conversation with the correct forms of the verbs in brackets. Have been didn't know open opened went Do like have visited did see read listened will bring 选择填空 1. We__________ this movie last week. A. saw   B. have seen   C. see 2. Mary __________ sushi before. A. never ate   B. has never eaten   C. never eats 3. The doctor __________ here since 2015. A. lived   B. has lived   C. live 4. Tom __________ to Beijing yesterday. A. has gone   B. went   C. goes 5. I __________ my homework. A. already finished   B. have already finished  C. finish Instant Training A B B B B 过去某一特定时间，只能用一般过去时： 当句中有表示过去某一特定时间的状语时不用现在完成时,而用一般过去时。 Mike has played tennis yesterday (×) Mike played tennis yesterday . (√) 速记口诀: 昨天、前天、多久前，刚才、那时、去年间； 过去年份、过去里，往年每天都一般。 Summary 一般过去时（过去特定时间） ①be 动词：主语 + was/were ②实义动词：主语+动词过去式（v-ed / 不规则变形） 现在完成时（影响现在，无具体过去时间） ①主语 + have/has + 动词过去分词 (done) used to do（过去常做，现在不） ①主语 + used to + V原 有过去具体时间 → 一般过去时 过去习惯今不同 → used to do 动作影响到现在 → 现在完成时 Complete the passage with the correct forms of the verbs in brackets. Why are local people richer and happier than before? Now great changes _________ (take) place. The government __________ (build) thousands of kilometres of highways, railways, and wide roads. It has also built many high bridges over mountains and rivers. A journey that used to _______ (take) a day now takes only a few hours. As a result, the lives of local people ______________ (improve). They are much richer and happier than they once _______ (be). In the past, it ____ (be) difficult to travel in Guizhou. In many places, there used to ____ (be) no bridges to cross over mountains and rivers, and most roads were just dirt tracks. This ______ (make) it difficult for locals to bring products to the market or to develop industry. was be made have taken has built take have improved were 现在完成时表示过去发生的某一动作对现在造成的影响或结果， 强调现在的情况（如现在的结果，影响,一直延续到现在等） 。 Past Present Future 一般过去时单纯叙述过去的动作或事情，强调动作，与现在无关 I saw Nezha 2 last night. （强调看的动作发生过了。） Past Present Future I have seen this film.(强调对现在的影响,我知道电影的剧情。) 现在完成时 vs 一般过去时 Thanks Lavf59.27.100 $