Unit1 Section A 4a-4c 课件 2026-2027学年人教版九年级英语上册

该初中英语课件围绕“变化的世界”主题，聚焦一般过去时与现在完成时的辨析。课堂导入通过对比过去与现在的生活实例（如交通时间、医疗条件），搭建学习支架，衔接旧知（used to结构）与新知（时态标志词、结构及用法）。 其亮点在于以“变化”为主线整合词汇（wide, dirt等）、语法与语用，通过真实语境任务（对话填空、短文写作）提升语言能力，借助时态对比表格和练习题培养思维品质。作业要求写家乡变化短文，促进学习能力发展。学生能在实践中掌握时态运用，教师可获得系统的教学资源支持。

The Changing World What brings about changes? 九年级英语 人教版 Section A What changes have taken place around you? GF(4a-4c) Lead-in Reviwe & Consolidation It to reach the town. It now. took half a day takes only an hour They to see a doctor. The town . used to have to travel far has built a new hospital 以前去镇上要花半天时间。 现在只需要要花一个小时。 他们过去不得不长途跋涉去看医生。 这个城镇新建了一家医院。 年轻人回乡 Reviwe & Consolidation Many young people in big cities. Now, more of them to live and work here. used to work have come back 现在,更多的人回到这里居住和工作。 许多年轻人过去在大城市工作。 The new highway and railway must ! 新修的公路和铁路一定帮了大忙! 交通便捷 have helped a lot 基础设施 Our village a new hospital and a library. has just built 我们村刚刚建了一家新医院和一个图书馆。 Learn new words, then make sentences. I saved this digital audio on my new phone. 我把这段数字音频保存在我的新手机里。 digital 电子的 audio 音频的;音频 Learn new words, then make sentences. The wide track is covered with thick dirt. 这条宽阔的小路上覆盖着厚厚的尘土。 dirt 泥土 ; 尘土 track 小路 ; 轨道 wide 宽的 ; 宽 阔 的 Presentation 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. Read the sentences and circle the verbs. Pay attention to the verb tenses. 关注;注意 He became a good friend of your grandfather about 20 years ago. 他大约在20年前成为了你祖父的好朋友。 They haven’t seen each other for ages! 他们好久没见面了! We used to have to travel far to see a doctor. 我们过去必须长途跋涉才能看医生。 Our village has just built a new hospital. 我们村刚建了一家新医院。 Many people used to work in big cities. 许多人过去曾在大城市工作。 Now, more of them have come back to live and work here. 现在,他们中有更多人回来在这里生活和工作。 一般过去时 vs 现在完成时 时态 一般过去时 (Simple Past) 现在完成时 (Present Perfect) 含义 动作发生在过去,和现在没有关系,事情只是过去发生过。 过去发生的动作,对现在造成影响;动作始于过去持续到现在。 标志词 yesterday, last week, …ago, in 2020, just now already, yet, since + 时间点,for + 时间段,ever, recently, so far,over the last 20 years 结构 主语 + 动词过去式 (did) 主语 + have/has + 过去分词 (done) 区别 一般过去时只陈述过去发生的事,和现在无关;现在完成时侧重过去的动作给当下带来结果或持续到现在。 Practice 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? 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 Complete the conversation with the correct forms of the verbs in brackets. 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. read listened will bring Language points yet “已经;仍然;还”,用于句末。 多用于疑问句或否定句,在疑问句中意为“已经”,在否定句中意为“还”。 拓展:already “已经,早已”,多用于肯定句,用于疑问句时, 表示“惊奇;意外”之意。 Have you been to the new library yet? 句意:“你去过新图书馆吗?” Complete the passage with the correct forms of the verbs in brackets. Why are local people richer and happier than before? In the past, it_(be) difficult to travel in Guizhou. In many places, there used to_(be) no bridges to cross 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 Now great changes_(take) place.The government _ (build) thousands of kilometres of highways, railways, and wide roads. It has also built many high bridges and tunnels. A journey that used to_(take) a day now takes only a fewhours. As a result, the lives of local people_(improve).They are much richer and happier than they once_ (be). have taken has built take have improved were Language points 拓展:think、consider、find、feel、believe 等动词也能用类似结构,比如“I find it hard to explain”(我发现很难解释)。 This made it difficult for locals to bring products to the market or to develop industry. 句意:“这使得当地人很难把产品运到市场,也很难发展。”工业 make it+形容词(+for sb)+to do sth 使得(某人)做某事 …… 在此结构中,it为形式宾语,后面的动词不定式短语是真正宾语。 Language points Language points Now great changes have taken place. 句意:“现在发生了巨大的变化。” happen:意外碰巧发生(日常口语) take place:计划好、安排好或者慢慢产生变化(考试高频) occur:正式书面用词,还可以表示想到 break out:灾难、战火爆发(不好的事情) Production 1. My uncle _ a worker in a big city fifteen years ago. A. has been B. was C. is D. will be 解析:fifteen years ago(15年前)是确定的过去时间,只能用一般过去时。 B 2.—Why don’t you see your old friends? —We _ each other for nearly 8 years. A. didn’t see B. haven’t seen C. don’t see D. won’t see 解析:for nearly 8 years(长达 8 年),表示动作从过去持续到现在,用现在完成时。 B 一、选择题 3.Great changes _ in my hometown during the past ten years. A. took place B. were taken place C. have taken place D. had taken place 解析:during the past ten years(近10年)是现在完成时标志;take place 无被动语态;have taken place 表示发生变化,契合单元语境。 C 4.There _ small dirt roads in this area in the past. A. were B. are C. have been D. was 解析:in the past(在过去)为一般过去时的标志;roads 是复数名词,be 动词用 were。 A 二、填空题 1.The government _ (build) lots of modern hospitals since 2018. has built 解析:since +年份(自从 2018 年)是现在完成时标志性短语;the government 看作单数,助动词用 has。 2.I _ (read) some digital books on my phone last night. 3.My grandma used to _ (walk) far to see doctors when she was young. 4.People’s living conditions _ _ (improve) a lot so far. 解析:last night(昨晚)是明确过去时间,使用一般过去时,read 过去式仍为 read。 解析:固定搭配used to do sth.过去常常做某事,to 后面只能加动词原形。 解析:so far(迄今为止)是现在完成时关键词,主语 people 为复数,助动词用 have。 read walk have improved Summary New words course, digital, audio, dirt, track, wide, tunnel Expressions as well as Sentences This made it difficult for locals to bring products to the market or to ... Homework Complete the exercises in the workbook. Try to write a short passage about how things has changed in your hometown and your true feelings. Thank You! $