Unit1 Understanding ideas -Grammar课件 2026-2027学年外研版英语九年级上册

该初中英语课件聚焦if条件状语从句（主将从现）和because原因状语从句，通过视频导入（If a cat sees a mouse）结合中英文例句分析句子成分，构建“情境感知-语法讲解-即时练习-语篇应用-写作输出”的学习支架，衔接语法知识与“taking responsibility”主题写作。 其亮点是以“责任”主题整合语法与写作，通过观察句子、句型转换、语篇填空等活动培养思维品质，结合个人经历写作提升语言能力，融入社会责任感培育文化意识。教学方法注重讲练结合与任务驱动，助力学生掌握语法应用与主题表达，为教师提供清晰可操作的教学路径。

Unit 1 Teenagers today (Understanding ideas—Grammar) 通过本节课的学习，同学们将能： 重点：1. 掌握  if  引导的条件状语从句(主将从现)和 because 引导的原因状语从句的基本用法与结构。 2. 在句子和语篇中正确使用 if 和 because 连接句子，表达条件与因果关系。 3. 围绕 “taking responsibility” 主题，结合提示框架和表达，完成简单的叙事写作。 难点：在真实语境中灵活切换使用 if 和 because，准确表达逻辑关系。将 “taking responsibility” 主题与个人经历结合， 写出逻辑清晰、语法正确的完整段落。 学习目标 By the end of this lesson, students will be able to: Key Points: 1. Master the basic usage and sentence structures of adverbial clauses of condition introduced by if (future main clause, present subordinate clause) and adverbial clauses of reason introduced by because. 2. Correctly use if and because to connect sentences in phrases and passages, so as to express conditional and causal relationships. 3. Complete simple narrative writing around the theme of taking responsibility with given frameworks and expressions. Difficult Points: Use if and because correctly in different situations. Combine their own experiences with the topic taking responsibility to write clear, correct and logical paragraphs. Learning Objectives Watch a video Learn new words programme n. 计划，方案 volunteer n. 志愿者，义务工作者 group n. 组，群；团体 Lead in 要是天气晴朗，我们要去野餐。 If it is sunny, we will go for a picnic. 条件状语：限制某个动作发生的条件 从句 主句 条件状语从句 (a) If I move my fingers, it will come to life! (b) I felt less close to the art because people thought puppets were old-fashioned. Language practice 观察以上句子，分别属于什么从句？ (a)条件状语从句 （b）原因状语从句 Language focus 1. if引导的从句表示某种假设的情况，主句则表示此种情况所导致的结果。一般来说，这种结构中的从句如果用一般现在时，那么主句的谓语多用一般将来时或“情态动词+动词原形”。 If you start doing your homework now, you’ll finish it before dinner.如果你现在开始做家庭作业，晚饭前就可以做完了。 She may come with us if she arrives in time. 如果她来得及时，就可以和我们一起去。 条件状语从句 从句:一般现在时 主句:一般将来时 从句:一般现在时 主句:情态动词+动词原形 主将从现 2. if引导的条件状语从句不是指已经发生的事件，而是指能够发生或可能发生的事件。 用来表达建议的“if从句+祈使句”结构，相当于汉语的“如果······，就······吧”。 If you want to know more about it, call now. 如果你想了解更多情况，现在就打电话吧。 3. if引导的从句可以放在主句之前，也可以放在主句之后。 If you ever go to London, make sure you visit the Science Museum. 如果你去伦敦，一定要去参观科学博物馆。 句子可以改写为:Make sure you visit the Science Museum if you ever go to London. 条件状语从句引导词: if unless as long as 如果 除非(如果不) 只要 I’ll visit the Great Wall if it doesn’t rain tomorrow. 如果明天不下雨，我要去游览长城。 Unless it rains, the game will be held. 除非下雨，否则比赛照常举办。 As long as we show our love, the world will be full of happiness.只要我们传递爱意，世界就会充满幸福。 要遵守主将从现原则 【即时练】 1. If it ______ fine tomorrow, we ______ a picnic. A. is; will have B. will be; have C. is; have 2. You ______ late for school if you get up late. A. are B. will be C. was 3. Please tell him the news if he ______ back. A. come B. comes C. will come 4.We won’t go out if it ______ tomorrow. A. rain B. rains C. will rain 5.  ______ you hurry up, you will catch the bus. A. If B. Unless C. When Language focus 如果从句表示的是主句行为的原因，就构成原因状语从句。原因状语从句由表示原因的连词引导，常用的是because, since, as。 （1） because“因为”，语气最强，强调 because后的从句。 回答why的提问。 He can’t come because he is very busy. 他不能来 因为 他非常忙。 He went to London because the truth was there. 他去了伦敦 因为 真相就在那。 原因状语从句 because和so不能同时出现在同一句话中。 He can’t come because he is very busy. = He is very busy so he can’t come. （2） since“既然”，语气较弱，其后从句远没有主句重要。 Since Monday is Bob’s birthday, let’s give him a party. 既然周一是鲍勃的生日，那我们为他举办一个派对吧! （3） as“由于”，语气较弱，其后从句与主句同等重要。 She didn’t hear us come in as she was asleep. 她睡着了，没听见我们进来。 【即时练】 1. I didn’t go to school yesterday ______ I was ill. A. because B. since C. as 2. ______ you know the truth, I won’t hide it anymore. A. Because B. Since C. As 3. ______ it is raining outside, we have to stay at home. A. As B. Because C. Since 4. —Why are you sad? —______ I lost my new pen. A. As B. Since C. Because 5. He can’t join us ______ he has too much homework. A. as B. because C. since Now find more sentences with these structures in the reading passage. 5 1. A truth hit me—it was my responsibility to keep the art alive because the love for puppets was in my blood. 2. The art will be popular again if young people are interested in it. Connect the sentences with if or because. 6 1 More young people got to know this art. Zhan Haojing gave puppet shows at school. ___________________________________________________ 2 Wang Meng joins the traditional art club. She will learn how to protect traditional art. ____________________________________________________  More young people got to know this art because Zhan Haojing gave puppet shows at school. If Wang Meng joins the traditional art club, she will learn how to protect traditional art. Join us to protect folk arts Dear friends, We want to start a programme to protect our local folk arts ¹_________ many of them are in danger now. Some of these arts may soon disappear ²________ we don’t take action. This week, let’s visit the folk art museum ³_________ it’s the best place for us to learn about these arts. ⁴________ we don’t know them well, it will be difficult to know how to help. Then, we can work as volunteers at the museum. We can help more people understand the arts and join in to protect them. Come and work with us. It’s our responsibility! Colourful Folk Arts Group Complete the notice with if and because. 7 because if because if Do you know responsibility ？ Example： When did it happen? Where did it happen? Who was there? What did you do? How did you feel? Introduce your own story about taking responsibility. Example： When did it happen? Where did it happen? Who was there? What did you do? How did you feel? Use the words and expressions from the reading passage and the Useful expressions to help you. *Useful expressions ... expressed their love for... ... encouraged me to... It was my responsibility to... ... will... if young people... I believe... Work in pairs. When did it happen? Where did it happen? Who was there? What did you do? How did you feel? It happened last week. It happened at home. My parents were there. I broke a cup by accident. I told my parents the truth. I said it was my responsibility to clear up the mess. I swept the broken pieces right away,. If I had lied, then my mum might get hurt by the glass. At first I was afraid, but my parents praised me. That encouraged me. I believe I should always be responsible. Example Last week, I had a lesson about responsibility at home. I was playing in the living room and broke a cup by accident. At first, I wanted to hide it, but I soon stopped. I told my parents the truth. I said it was my responsibility to clean up the mess. Right away, I swept the broken pieces carefully. I thought: If I had lied, then my mum might get hurt by the glass. At first I was afraid, but my parents praised me for being honest. Their words encouraged me a lot. They expressed their love for me by telling me that honesty is always the right choice. I believe I should always take responsibility for my actions. If young people learn to face their mistakes bravely, they will grow into more responsible adults. 1. We want to start a programme to protect our local folk arts because many of them are in danger now.我们想启动一个项目来保护我们当地的民间艺术，因为其中的许多现在正濒临消失 (1) local folk arts当地的民间艺术 (2) in danger处于危险中；濒临灭绝 反义词组：out of danger脱离危险 例句：Some old crafts are in danger.一些古老手艺正面临失传的危险。 【对点练习】 许多动物正濒临灭绝。 Many animals are in danger. Language points 2. Some of these arts may soon disappear if we don’t take action.如果我们不采取行动，这些艺术中的一些可能很快就会消失。 take action采取行动 【对点练习】 我们必须采取行动保护我们的文化。 We must take action to protect our culture. 3. It’s the best place for us to learn about these arts.这是我们了解这些艺术的最佳场所。 It’s the + 形容词最高级 + place for sb. to do sth. 意为：对某人来说，这是做某事最······的地方 例句： It’s the best place for children to play. 这是孩子们玩耍的最佳场地。 【对点练习】 It’s the best place ______ us ______ study. A. for; to B. to; for C. for; for 当堂检测 一、根据句意及汉语提示填空 1. The ________________ (方案) run by local students has drawn much attention. 2. He wants to become a ________________ (志愿者) to protect folk arts. 3. Our ________________ (小组) will study traditional culture together. programme  volunteer  group  二、根据汉语提示补全句子 1. We should ____________ (采取行动) right now. 2. Some traditional skills are ____________ (濒临消失). 3. They will ___________________ (启动一个项目) next week. 4. I ___________________ (对······感兴趣) folk music. 5. He likes to ______________ (和······合作) other members. take action  in danger start a programme am interested in  work with 三、句型转换(用 if 或 because 完成句子) 1. Hurry up, or you will be late for the school meeting. ________ you ________ hurry up, you will be late for the school meeting. 2. She passed the math exam. She studied very hard for weeks. She passed the math exam ___________ she studied very hard for weeks. 3. You help me with my English. I will help you with your Chinese. I will help you with your Chinese _______ you help me with my English. 4. We should plant more trees. The air in our city is getting worse and worse. We should plant more trees __________ the air in our city is getting worse and worse. 5. Work hard at your lessons, and you will get good grades. ________ you work hard at your lessons, you ________ get good grades. If don’t because if because If will THANKS Lavf59.27.100 $