Unit 1 Lesson 4 Section A (4a-4c) （讲解课件）-【优翼·学练优】2026-2027学年九年级英语上册同步备课（人教版·新教材）

该初中英语课件聚焦一般过去时与现在完成时的辨析，通过圈划例句动词、寻找时间词等课堂导入活动，引导学生从具体语境感知两种时态的动词形式与时间标志，搭建从实例观察到规则总结的学习支架，帮助梳理时态用法脉络。 其特色在于结合“家乡变化”主题设计4c短文填空等情境练习，通过对比表格清晰呈现两种时态的核心区别（如时间点与时间段、是否影响现在），既提升学生语言能力（准确运用时态描述变化），又培养思维品质（分析比较时态差异），助力学生掌握学习策略，也为教师提供结构化教学资源，提高课堂效率。

Lesson 4 Section A (4a—4c) Learning Objectives 1. identify and distinguish the simple past and present perfect tenses in sentences. 2. use the correct verb forms to talk about past habits, past events, and changes that affect the present. 3. complete exercises accurately to describe changes in your hometown and daily life. In this lesson you will: Read the sentences and circle the verbs. Pay attention to the verb tenses. 4a 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. became (v-ed) / used to haven’t seen/has built/have come back: have/has+v-ed =simple past tense =present perfect tense Can you find the time words in each sentence? He became a good friend of your grandfather about 20 years ago. We used to have to travel far to see a doctor. Many people used to work in big cities. They haven't seen each other for ages! Our village has just built a new hospital. Now, more of them have come back to live and work here. 20 years ago 无 for ages just Now Which tense goes with specific past time words like "20 years ago"? Which tense goes with non-specific past time expressions like "for ages" and "just"? Simple past tense. Present perfect tense. 无 What about "used to"? Does it have a time word? No, but it means something in the past. "Used to" doesn't need a time word because it itself means something happened regularly in the past but doesn't happen now.（曾经；过去常常） It’s a structure that expresses past habits, which is related to the concept of simple past tense but has its own form. 一般过去时 VS 现在完成时 核心区别 一般过去时：强调动作发生在过去，并且已经结束，和 现在没有直接关系。 现在完成时：强调动作发生在过去，但对现在有影响， 或者一直持续到现在。 具体用法对比 1. 时间点 VS 时间段 一般过去时 强调过去的某个具体时间点。 I visited Beijing last summer. 我去年夏天去了北京。——强调去年夏天那个时间点 现在完成时 强调从过去延续到现在的一段时间。 I have visited Beijing three times. 我去过北京三次。——强调到现在为止的经历 2. 动作是否结束 一般过去时 的动作已经结束，和现在无关。 I lost my keys. 我把钥匙弄丢了。——只陈述过去丢了钥匙这件事 现在完成时 的动作可能还没结束，或者对现在有影响。 I have lost my keys. 我把钥匙弄丢了。——暗示：我现在进不了门 3. 有无具体的、表示过去的时间标志词 一般过去时 常与具体的、表示过去时间的词连用： yesterday, last week, ...ago, in 2020, when I was a child... 现在完成时 不与表示具体过去的时间词连用，常与以下词连用： already, just, ever, never, yet, for, since, so far, up to now... I saw the movie yesterday. （有具体时间） I have seen the movie. （无具体时间） 典型时间词对比 一般过去时 现在完成时 核心特点 表示过去某个具体时间 表示对现在的影响，或从过去延续到现在 yesterday系列 yesterday, yesterday morning, the day before yesterday ❌️ 不能使用 last系列 last night, last week, last month, last year ❌️ 不能使用 ago系列 two days ago, three years ago, a long time ago ❌️ 不能使用 具体年/月份 in 2020, in May, on Monday ❌️ 不能使用 4. 询问具体时间 VS 询问经历 询问什么时候发生的，用一般过去时。 When did you buy this book? 询问有没有做过，用现在完成时。 你这本书是什么时候买的？ Have you ever read this book? 你读过这本书吗？ 4b Complete the conversation with the correct forms of the verbs in brackets. 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). Have been didn’t know open opened went Did like have visited 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. did see read listened will bring 4c 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 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 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). have taken has built take have improved were 本文件著作权为创作公司所有, 仅限于教师教学及其他非商业性和非盈利性用途。如发现盗用、转卖、网络传播等侵权行为, 本公司将依法追究其相应法律责任。 部分素材选自网络, 如有争议, 请联系删改。 声 明 $