Unit 1 4a-4c 语法课课件2026-2027学年人教版英语九年级上册

该初中英语课件聚焦一般过去时与现在完成时的区别，通过左右列例句对比（如“used to work”与“have come back”）导入，从形式、用法到时间标志词逐步构建知识体系，结合练习题和贵州交通变化阅读文本，形成从基础到应用的学习支架。 其亮点在于用对比表格、思维导图（贵州交通过去与现在）帮助学生辨析时态，体现思维品质。分层练习题（基础到挑战）和对话填空提升语言能力，词汇表和用法说明培养学习策略。将语法与“变化的世界”主题结合增强文化意识，学生能提升语法应用能力，教师可高效开展分层教学。

Unit 1 The Changing World 4a-4c Grammar Focus Read and underlines the verbs. What tenses (时态) do they use? Why? 强调对现在造成的结果：人回来了 used to do 过去常常做… 一般过去时 现在完成时 单元语法 掌握一般过去时与现在完成时的区别 1. 形式： 2. 用法 3. 做题 (时间标志词) 肯、否 一般过去时 现在完成时 形式 (do) 肯： 肯： 否： 否： 用法 _______某个时间或某一段时间内发生的动作或存在的状态 (1) 过去发生的某一动作对_____造成的_____或_______ (2) 动作从过去发生_____到 _____，并可能一直_____下去。 did have done; 主语三单 didn’t has done 现在 结果 影响 持续 现在 持续 过去 haven’t / hasn’t done 只和________ 有关 (时间) 过去 与_______有关 (时间) 现在 核心区别 影响性 持续性 肯定句中，只能用持续性动词； 否定句中，可用短暂性动词表持续 一般过去时 现在完成时 同一句话对比 只和过去有关 与现在有关 He has worked at a nursing home since last year. He worked at a nursing home last year. I have watched the movie before. I watched the movie last week. 只说明上星期看了这部电影 现在了解这部电影的内容 现在还在敬老院工作 只说明去年在敬老院工作， 不涉及现在是否还在那里工作 一般过去时 现在完成时 时间标志词 影响性 持续性 其他 ever / never; already / yet; recently / just yesterday 类 last 类 ago 类 in +过去年份 in the past just now … since, for； so far / up to now / till now in / over / during the last / past + 时间段 has been to has gone to 最高级+ ever It’s the first time … 已回 未回 做好笔记！ 6 小练 一、 基础题 My father ________ (buy) a new car two weeks ago. She ______________ (live) in Shanghai for five years. I ________ (finish) my homework last night. The project ________ (be) very successful so far. She ________ already ________ (clean) the classroom. bought has lived finished has been has cleaned 二、 易错题 6. In the past, people __________ (travel) mainly on foot or by horse. 7. In the past few years, the city ____________ (change) a lot. 8. The phone rang just now, but I ____________ (not answer) it. 9. Wait a minute! I __________ just ___________ (get) an important message from our teacher. 10. It is the second time that I ___________ (visit) Shanghai. travelled has changed didn’t answer have got / gotten have visited 三、 挑战题 11. — Where is your key? I can’t find it. — Oh no! I ________ (lose) it. 12. — ________ you ________ (see) the movie last weekend? — Yes, I ________ (watch) it with my sister. I ________ never ________ (see) such a touching film. 13. — Look! Someone ___________ (break) the window. — I know. Tom ____________ (break) it when he was playing football yesterday. Did see watched have seen has broken have lost broke 对现在造成了影响 （找不到钥匙），强调结果 对现在造成了影响 （窗户破着），强调结果 大部分题可通过时间标志词解决 易混标志词要分清 理解语境是金标准！ 一般过去时 vs. 现在完成时 总结 有: 现在完成时 一般过去时 没有: 与现在有关系吗? Have been didn’t know open opened went Did like have visited did see read listened will bring 练一练：4b. Fill in the blanks and give reasons. 过去不知情 过去那时是否喜欢 过去那时看到了什么 过去参观时做的事 11 Opening time: _____________ Kinds of books: _______________ _______________ _______________ _______________ Last Friday Science books Chinese culture books Children’s books The most high-tech: readers can _______________ on the _________. _____________ if they can’t see well. read digital books computer listen to audio books What specific information about the new library can you get? 1. What can you see in the picture? The environment: many mountains and rivers The building: a high bridge Hongfenghu (红枫湖) Bridge in Guizhou Province 2. Guess! What is the text probably about? View & Predict It is probably about Guizhou’s ___________. was be made have taken has built take have improved were 强调变化对现在的影响 讲过去的事情；与现在无关 强调对现在造成的结果：当地人民的生活改善了 1. Fill in the blanks and give the reasons. (4c) 2. What’s the text about? was be made have taken has built take have improved were Main idea: It is about Guizhou’s great changes in __________. (aspect) transport How has it changed? Complete the mind map. Read & Complete Past Present Transport in Guizhou ________ to cross over mountains and rivers _________________ It is ________ for locals to _______________ or to _________________. The _________ has built ___________________________________________________ _________________ A journey that used to take a day now takes __________________ The lives of locals _______________. They are much _______________. no bridges dirt tracks difficult bring products to the market develop industry richer and happier have improved government thousands of kilometers of highways, railways and wide roads high bridges only a few hours easy difficult A: Have you been to the new library yet? B: No, I didn’t know there was a new library. When did it open? A: It opened last Friday. I went there with my grandpa on Saturday night. B: Did you like it? A: Of course! It’s the most high-tech library I have ever visited. B: Oh, what did 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 listened to some audio books because he can’t see well. B: Cool! I will bring my little brother there tomorrow. 最高科技的 并且；连接并列主语时，谓动看前 在周六晚上；on + 具体某天的早/中/晚 带有 一个巨大的区域 儿童书籍 电子书；digital adj.电子的 在电脑上 有声书；audio adj. 音频的；n. 音频 In the past, it was 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 made it difficult for locals to bring products to the market or to develop industry. 在过去；一般过去时 It is + adj. + for sb + to do 过去曾经是 跨越 土路；dirt n. 泥土；尘土 track n. 小路；轨道 把产品运到市场 发展工业 形式宾语 真正宾语 Now great changes have taken place. The government has built 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 have improved. They are much richer and happier than they once were. 巨大的变化 发生 n. 政府 成千的 公路，铁路和宽阔的道路 注意介词over 花费一天 几个；一些；few 几乎没有 因此 当地人民的生活 更富裕，更幸福；比较级修饰词: much ; a little / bit ; even; far; … 曾经是 在周六晚上 最高科技的 并且 一个巨大的区域 儿童书籍 电子书 在电脑上 有声书 在过去 10. 对某人来说做某事是… 11. 过去曾经是 12. 跨越 13. 土路 14. 把产品运到市场 15. 发展工业 16. 巨大的变化 17. 发生 18. n. 政府 19. 成千的 20. 公路，铁路和宽阔的道路 21. 花费一天 22. 几个；一些 23. 因此 24. 当地人民的生活 25. 更富裕，更幸福 26. 曾经是 在周六晚上 最高科技的 并且 一个巨大的区域 儿童书籍 电子书 在电脑上 有声书 在过去 10. 对某人来说做某事是… 11. 过去曾经是 12. 跨越 13. 土路 14. 把产品运到市场 on Saturday night the most high-tech as well as a huge section children’s books digital books on the computer audio books in the past It’s + adj. + for sb + to do used to do cross over dirt tracks bring products to the market 15. 发展工业 16. 巨大的变化 17. 发生 18. n. 政府 19. 成千的 20. 公路，铁路和宽阔的道路 21. 花费一天 22. 几个；一些 23. 因此 24. 当地人民的生活 25. 更富裕，更幸福 26. 曾经是 develop industry great changes take place government thousands of highways, railways and wide roads take a day a few as a result the lives of local people much richer and happier once were $