Unit 1 The Changing World Section A Grammar Focus 课件2026-2027学年人教版九年级英语上册

该初中英语课件聚焦一般过去时、现在完成时和used to结构，通过生活场景对比（如河流、街道的过去与现在）导入，以定义、例句、句式变化及结构对比表格为支架，帮助学生构建时态知识体系。 其亮点在于融合文化意识与思维品质，借助贵州交通变化等本土案例增强家国情怀，通过时态对比培养逻辑归纳能力。采用情境导入与任务驱动教学，搭配Instant Training练习和对比画作业，提升语言运用能力，为教师提供清晰教学路径，助力高效课堂。

The Changing World Section A Grammar Focus Unit 1 通过本节课的学习，同学们将能： 1. 准确识别并圈出句子中的动词，区分一般过去时、现在完成时和 used to 结构的用法；运用目标时态完成对话和短文填空，描述场景与变化； 2. 在小组合作中梳理时态用法，自主完成基础与拓展任务；对比过去与现在的生活，培养逻辑分析与归纳总结能力； 3. 通过贵州交通变化的短文，感受家乡发展与国家建设 成就，增强文化自信。 The river was very clean and we could swim in it when I was a child. The local government has planted many trees, so the air here is much fresher. There used to be a lot of rubbish on the street, but now it is clean and tidy. Lead in used to 的用法 used to 的基本句式 used to 过去常常，可用于各种人称，表示过去存在的，但现在可能已经停止的情况或习惯。 used to do sth. 表示“过去常常做某事”。 e.g. Mr. Smith used to go fishing by the lake. People paid with cash or bank cards when they went shopping 10 years ago. E-payment has become a common way to pay for things in our daily life. People used to carry a lot of cash when they went out, but now they only need a phone. used to 的句式变化 (1) used to 的否定式为didn’t use to 。 Her daughter didn’t use to eat fruit. (2) used to 的一般疑问句在句首加did，并把used 变成use。 —Did Lucy use to have straight hair? —Yes, she did./ No, she didn’t. (3) used to 的反意疑问句 used to 的反意疑问句形式也有两种：一是用didn’t；二是用usedn’t。 She used to be shy, didn’t she? 1. His father used to love mountain climbing. (改为一般疑问句并进行否定回答) —________ his father _______ to love mountain climbing? —________, he ________. Did use No didn’t Instant Training 2. Your father used to eat meat, _____? A. did you B. didn’t you C. usedn’t he D. did he C there be 结构与used to的结合句型： There used to be... 过去有…… There used to be a bank across from the street. 这条河里过去有很多鱼，可现在它被污染得很严重。 ______________ many fish in the river. But now it is seriously polluted. There used to be Read the sentences and circle the verbs. Pay attention to the verb tenses. 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. 当我们描述过去的经历时，我们常常使用____________时态；我们还可以使用____________时态来表示过去发生的事对现在造成的结果和影响。 used to… 意为“曾经······；过去常常······”，表示________的习惯或状态，但现在已经不再发生或不存在。 一般过去 现在完成 过去 1) —Have you read Treasure Island yet? — Yes, I have. 表示过去发生或已经完成的某一动作对现在造成的影响或结果。 强调动作已经完成，并且与________________的状态或情况有直接关联。 2) I haven’t seen her these days. 表示动作或状态从过去某一时刻开始,一直延续到现在,而且可能还要继续下去。常与____________＋时间段；____________＋时间点等时间状语连用。 语法精讲 现在完成时 1.意义 现在 for since used to do sth. get/be used to doing sth. be used to do sth. be used for doing sth. used to 的相似结构辨析 过去常常做某事 习惯于做某事 被用来做某事 被用来做某事 区别二：结构 He ate lunch just now. He has already eaten lunch . 一般过去时 现在完成时 主语+动词过去式 主语+have/has+动词过去分词 一般过去时 现在完成时 否定句 一般疑问句 主语+was/were+not +其他 主语+didn`t +动词原形 主语 + have/has + not + 过去分词 Was/were +主语+其他？ Yes, 主语+was/were. No,主语+wasn`t/weren`t. Did +主语+动词原形？ Yes, 主语+did. No,主语+didn`t. Have/Has + 主语 + 过去分词 ? Yes, 主语+have/has. No, 主语+haven`t/hasn`t. 1. 我妈妈过去常用手洗衣服。 My mother _____________ clothes by hand. 2. 我妈妈习惯于用洗衣机洗衣服。 My mother _______________________ clothes in the washing machine. 3. 洗衣机被用来洗衣服。 The washing machine _______________________ clothes. =The washing machine __________________________ clothes. used to wash is/gets used to washing is used to wash is used for washing Instant Training Many people used to work in big cities. 许多人过去在大城市工作。 Now, more of them have come back to live and work here. 现在他们中有更多人回来这里生活和工作了。 前一句和后一句形成对比，现在完成时在这里说明从过去到现在的这种变化结果。 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 used to 含义： 过去的某种经常性、习惯性的动作或行为. 结构： 主语+used to + 动词原形 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 who has helped make life better? Parents? Teachers? Workers? Thinking hard work of many people and the support of the government. 1.In Guizhou, My parents have worked hard to give me a good education. The workers have built a new park for us. Who Made the Changes Possible? 2.In our hometown, Change makes life better. 1. 一般过去时（Simple Past） 只描述过去，和现在切断联系 动作发生、结束在明确的过去时间，单纯陈述一件往事，不关心对当下有无影响。 2. 现在完成时（Present Perfect） 连接过去与现在 动作起点在过去，但落脚点是现在，要么强调当下结果，要么动作持续到此刻。 一、核心本质区别 Enter the video Thinking New roads may destroy old forests. Changes can bring problems too. Not All Changes Are Good We should balance development with health. What should we do? Fast food restaurants – convenient but unhealthy. We should ... 一、用所给词的适当形式填空 1. He _________ (become) a teacher in Guizhou ten years ago. 2. They ____________ (not see) each other since last year. 3. People in the village __________ (use to) live in small houses. Now they live in apartments. 4. ______ you ______ (be) to the new park yet? 5. The government ____________ (build) many new schools in Guizhou recently. became haven’t seen used to has built Have been used to We used to have to travel far to see a doctor. 变否定句： 变一般疑问句： We didn`t use to have to travel far to see a doctor. We usedn`t to have to travel far to see a doctor. Did you use to have to travel far to see a doctor? Used you to have to travel far to see a doctor? 主语+didn’t use/usedn`t to do sth. Did+主语+use/ used+主语+to do sth. 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? 一般过去时的构成 连词成句 1. ago / became / 20 years / friends / they / good ____________________________________________ 2. for / haven’t / they / each other / ages / seen ____________________________________________ 3. used to / work / in / many people / big cities ____________________________________________ 4. just / built / our town / a new hospital / has ____________________________________________ 5. back / have / to live here / more of them / come ____________________________________________ They became good friends 20 years ago. They haven’t seen each other for ages. Many people used to work in big cities. Our town has just built a new hospital. More of them have come back to live here. 一般过去时 1. 一般过去时 结构：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） 否定：①主语+wasn’t/weren’t ② 主语+didn’t + 动词原形 疑问：①Was/Were + 主语 ② Did + 主语 + 原形 例： I was busy yesterday. I visited Paris last year. She used to get up early. Pens are used to write. She is used to getting up early. be/get used to doing “习惯于做某事” 注意：此时to是介词，故后面接动词ing形式 be used to do “被用来做某事” 注意：be used此时是被动语态 used to do “过去常常” （+动词原形） 注意：用于表示过去常常做，现在不一定这样了 2. Whose birthday is it? Homework Need to do: 完成课本4b、4c的错题订正，在对话和短文中正确运用“I used to...”, “Have you ever...?”描述变化。 Choose to do: 画一幅关于你家乡“过去 vs 现在”的对比画，并写2–3个句子来描述这些变化。（如used to, have/has done, simple past） 学习目标 通过听读对话，获取Li Rui家乡在交通、医疗、购物、环境等方面的具体变化信息，完成表格填写；识别并区分对话中一般过去时（描述过去）和现在完成时（描述变化结果）的形式和意义；运用“used to... But now...”的对比结构，概括家乡变化的主要内容。 01 运用一般过去时和现在完成时，描述Li Rui家乡的变化（如“It used to take half a day, but now it takes only an hour”）；分析听力对话中人物的情感态度（如Bob的惊叹、Li Rui的自豪），判断变化对人们生活的积极影响；在角色扮演中模仿对话的语调和表达方式，运用目标语言进行交流。 02 评价家乡变化带来的利弊，表达自己的观点和感受（如“What do you think is the most important change?”）；运用所学语言，在真实或模拟的情境中讨论自己家乡近十年的变化，并表达情感态度。 03 通过本节课学习，学生能够： Thanks for watching! $