Unit13 We‘re trying to save the earth! SectionA Grammar Focus课件 -2025-2026学年人教版（2012）英语九年级全一册

该初中英语课件聚焦人教版九年级Unit 13语法复习，核心涵盖现在进行时、used to结构、被动语态、现在完成时及情态动词。课堂导入通过Warming Up模块回顾已学七种时态，再以例句呈现本课语法点，搭建新旧知识衔接的学习支架。 其亮点在于依托环保主题语境整合语法教学，如通过“列出环保行动并讨论”的探究活动，培养学生思维品质中的分析与表达能力。练习设计包含填空、翻译及语境对话，分层巩固语法知识，提升语言运用能力。这一设计既让学生在真实话题中掌握语法，又帮助教师高效实施教学，落实新课标语言能力与学习能力的培养要求。

Unit 13 We are trying to save the earth! Section A Grammar Focus ~ 4c 九年级全一册 人教版 Learning Goals Warming Up Grammar Summary Exercises 1 1 2 3 4 5 v.-ing形式(现在分词)的构成： a. 一般情况下在动词词尾加-ing。 b. 以不发音的e结尾的动词，去掉e加-ing。 c. 以一个辅音字母结尾的重读闭音节，双写最后一个字母，再加-ing。 used to do sth. 表示过去常常做某事, 而现在往往不 了, 后接动词原形。 be used to doing sth. 表示习惯于做某事 e.g. I used to get up at six o’clock. Joe is used to drinking a cup of coffee every morning. 2.used to do与be used to doing 通过本课的学习，学生能够： 复习现在进行时/used to/ 被动语态/现在完成时/情态动词。 Learning Goals How many tenses(时态) have we learned? What are they? Warming Up 一般现在时、一般过去时、一般将来时 现在进行时、过去进行时 现在完成时、过去完成时 3.被动语态：Passive voice 定义：表示主语是动作的承受者，即行为动作的对象的一种语态。 结构：be + 过去分词 e.g. A new school was built last year. Our classroom is cleaned every day. ①一般现在时的被动语态：am/is/are + V-ed　 ②一般过去时的被动语态：was/were+ V-ed ③一般将来时的被动语态：will/shall+be+ V-ed We’re trying to save the earth. The river used to be so clean. The air is badly polluted. No scientific studies have shown that shark fins are good for health. We should help save the sharks. Read the chart and tell what grammar points we are going to review today. Presentation Present progressive used to Passive voice Present perfect Modal verbs 现在进行时： 时态： Let’s review! 什么时候使用现在进行时？ 现在进行时的标志性词语有哪些？ 现在分词的构成规则有哪些？ 结构: have/has + 过去分词 标志词: already, yet, ever, never, just, before, once, twice, recently, so far, for+时间, since+时间点/从句。 定义：表示动作已经完成, 但对现在造成影响; 或者表示从过去某一时间开始一直延续到现在并还可能持续下去的动作。 4.现在完成时: Present perfect 现在进行时 基本 结构 基本 用法 标志词 be (am/is/are) + 动词-ing 1.表示现在正在进行或发生的动作。 2.表示现阶段或当前一段时间之内 正在进行的动作。 now、look、listen、these days等 现在进行时 used to do sth. 表示过去常常做某事, 而现在往往不做了, 后接动词原形。 be used to doing sth. 表示习惯于做某事 e.g. I used to get up at six o’clock. Joe is used to drinking a cup of coffee every morning. used to do与be used to doing Translation. 1. 她过去常常周末和朋友闲逛。 She used to hang out with friends on weekends. 2. 他习惯晚睡。 He is used to staying up. Grammar Focus 现在进行时 现在进行时 基本 结构 基本 用法 标志词 be (am, is, are) + v.-ing 说话瞬间正在进行或发生的动作 现阶段或当前一段时间之内正在进行的动作 now, look, listen, right now等 e.g People are throwing rubbish to the river. 15 探究一：现在进行时的结构和用法 定义：表示说话时(瞬间)正在进行的动作, 也表示目前或现阶段正在进行 的动作，或说话者的强烈情感。 探究二：used to的结构和用法 used to意为“过去常常做某事” ，后接动词原形。 used to句型的否定句形式：didn’t use to used to句型的一般疑问句的形式：Did + 主语 + use to ...? used to do表示过去常常做某事，而现在往往不做了； be used to doing表示习惯于做某事。 结构: has/have + 过去分词 标志词：already, yet, ever, never, since, for … e.g. I haven’t finished my homework yet. 定义：表示动作已经完成, 但对现在造成影响; 或者表示从过去某一时间开始，一直延续到现在并还可能持续下去的动作。 现在完成时: Present perfect Presentation Ken: I ___________ (think) more than 1,000 people ______(come) to help out. Joe: That’s fantastic! I guess everyone in this city is ______ (try) to improve the environment. Ken: Yes, we can’t afford to________ (wait) any longer to take action! think came trying wait 18 Presentation People _________ think that big things__________________ be done to save the earth. Many forget that saving the earth begins with small things. For example, you ______________ save electricity by turning off the lights when you leave a room. You _______________ also use reusable bags instead of plastic bags. Fill in the blanks with the appropriate modal verbs from the box. can would could have to should must may/ might may/might should/have to/must can/could/should can/could/should adj. 可重复使用的；可再次使用的 关掉 19 探究三：被动语态的结构和用法 1. 定义：主动语态表示主语是动作的执行者。被动语态表示主语是动作 的承受者，即行为动作的对象。 2. 结构：be + 过去分词 e.g. A new school was built last year. Our classroom is cleaned every day. 探究四：现在完成时的结构和用法 现在完成时 基本 结构 基本 用法 标志词 have/has + 过去分词 1. 过去发生或已经完成的动作对现在造成影响或结果 2. 从过去某一时间开始一直延续到现在并还可能继续延续下去的动作 already, yet, ever, never, just, before, once, twice, recently, so far, for +时间段，since +时间点/从句。 探究五：情态动词的结构和用法 情态动词本身有一定的词义, 表示说话人的情绪、态度或语气, 但不能单 独作谓语, 只能与其他动词构成谓语。 1. 我们不能在教室里吃东西。 2. 首先你必须完成作业。 3. 他现在不可能在家。 4. 她一定知道这个问题的答案。 We can’t eat in the classroom.  You must finish your homework first. He can’t be at home now.  She must know the answer to this question. Translation. Presentation I think it’s a great idea that you now _______ pay for plastic bags in some stores. And instead of driving to school or work, you _______________ ride your bike or walk. If it’s far, you __________ take the bus. All these small things __________ add up and become big things that ______________ improve the environment. Let’s take action now! have to can/could/should can/could can/could would/can/could 付费；付出代价 采取行动 can would could have to should must may/ might 22 Make a list of things that people can do to help the environment and discuss your list with your partner. Presentation I think that everyone should use public transportation. I disagree. It’s difficult for parents with young children to use public transportation ... ________________________________________________________ use public transportation n. 运输业；交通运输 23 Complete the following sentences. I _________ (be) in Beijing for two years. 2. I _____ never _____ (hear) of that man before. 3. Tom __________ (work) there since two years ago. have been have heard has worked 4. The twins ___________ (wash) the clothes for an hour. 5. He _________ (play) basketball since three years ago. 6. How long ____ Sally _____ (sing) yet? have washed has played has sung Exercise 一、用所给词的适当形式填空 1. The old man used _____ (be) a teacher. 2. We should _____ (clean) the room every day. 3. Look! Tom _____________ (sleep) in his room. 4. Lots of trees _______________(plant) on the hill every year. 5. He _________ (live) here for 20 years. to be clean is sleeping are planted has lived 25 Presentation Post-grammar Fill in the blanks with the correct forms of the verbs in brackets. Joe: _____ you ever _____ (take) part in an environmental project? Ken: Yes, I have. I _______ (help) with a Clean-Up Day last year. It was __________ (consider) the biggest clean-up project this city______ ever ________ (have). Joe: How many people ________ (take) part? Ken: I ___________ (think) more than 1,000 people ______(come) to help out. Joe: That’s fantastic! I guess everyone in this city is ______ (try) to improve the environment. Ken: Yes, we can’t afford to________ (wait) any longer to take action! Have taken helped considered had had took think came trying wait take part in sth/doing sth 参加 afford to do sth 负担得起 take action 采取行动 26 1. 情态动词本身有一定的词义, 表示说话人的情绪、态度或语气, 但不能单独作谓语, 只能与其他动词构成谓语。常见的有: can (could), may (might), must, need, shall (should), will (would)等。 情态动词 2. 情态动词无人称和数的变化, 后接动词原形。否定式是在情态动词后面加not。个别情态动词有过去式形式, 可用来表达更加客气、委婉的语气。 e.g. Ken can climb up the trees like a koala. Tracy could ride a bicycle when she was five years old. You mustn’t play with fire. It is dangerous. Exercise 二、根据所给汉语完成英语句子。 1. 这条河过去很干净。 The river _______ _______ _______ so clean. 2. 我们应该帮助拯救鲨鱼。 We should _______ _______ the sharks. 3. 然而，很多人忘记了拯救地球从小事做起。 However, many forget that saving the earth______ ____ small things. 4. 在很多商店，你不得不付塑料袋的费用 In some stores, you now have to ___ _____ plastic bags. 5. 我们认为每个人都应该使用公共交通工具。 We think that everyone should use ________ ______________. used to be help save begins with pay for public transportation 28 人教版英语 Thank you 人教版英语 Lavf58.28.100 $