Unit 5 Power of Ideas 单元复习课件 2026-2027学年初中英语人教版九年级上册

该初中英语课件围绕“Power of Ideas”主题，聚焦发明话题、被动语态及be used for等核心考点，通过“Look and say”单词快速反应与句子填空导入，搭建从词汇激活到句型应用再到语法突破的学习支架，衔接前后知识脉络。 其亮点在于以任务型活动提升语言能力，如角色扮演采访发明家、写作介绍发明，结合被动语态转换练习；通过考点辨析（如effect与affect）培养思维品质，口诀辅助记忆增强学习能力。学生能在实践中运用语言，教师可依托清晰结构高效教学。

Unit Review Power of Ideas Unit 5 英语人教版九年级上册 Time to Relax Lead in invention camera printer produce plastic rapid suppose reality responsible shape expensive officer suitable company widely 塑料 生产 打印机 照相机 发明 Look and say: Say the words according to Chinese quickly. 迅速的 有责任的 现实 认为 形状 广泛地 公司 合适的 官员 昂贵的 Lead in 1. This kind of machine is _________ (生产) in this factory. 2. We should use fewer ________ (塑料) bags to protect the environment. 3. The ________ (诞生) of the new invention changed people’s lives. 4. The big ________ (公司) produces many useful electronic products. 5. The project will be _________ (完成) next month. 6. The price is low, so most families can _________ (买得起) it. 7. The _________ (生产) of new energy cars grows fast in recent years. Complete the sentences with the right words or phrases. plastic produced birth company completed afford production 话题梳理 话题：Power of Ideas (思想的力量) 功能：Talk about inventions. （谈论发明） Discuss how inventions change our lives. （讨论发明如何改变我们的生活） Describe inventions using the passive voice. （用被动语态描述发明） Explore the stories of inventors and inventions. （探究发明者与发明背后的故事） 话题梳理 Power of Ideas Talk about inventions Discuss how inventions change our lives Describe inventions using the passive voice Explore the stories of inventors and inventions What invention do you like most? Who invented it?/Who was it invented by? When was it invented? What changes can inventions bring to our lives? It had a big effect on people’s daily life. It led to a great increase in knowledge. A mini-camera is connected to the front of the glasses. The telephone was invented in 1876. An accident led to the invention of sticky notes. A good invention should be inexpensive, easy to operate and beneficial to people. 考点突破 1. The telephone ______ (use) for ______ (talk) with people far away. 2. These new machines _________ (use) for ____________ (produce) fruits in greenhouses. 3. The special glasses ________ (use) for __________ (help) old people read books. 4. 电脑被用来学习和工作。 _____________________________________________________ 1. What can the special glasses be used for? (教材P42) is used talking are used producing are used helping Computers are used for studying and working. 考点突破 be used for 的基本结构为 be used for +名词/动名词 (doing) 含义：某物被用来做某事，强调用途、功能。 例：The special glasses are used for helping blind people read. 这种特殊的眼镜是用来帮助盲人阅读的。 同义 & 易混辨析 • be used to do = be used for doing （同义，都表用途） • used to do：过去常常做（主动含义，无被动形式） • be used to doing：习惯于做某事 1. What can the special glasses be used for? (教材P42) 考点突破 2. Hundreds of kinds of dishes can be made by Smart Cook. (教材P42) 1. ______________ new inventions appear in our daily life every year. 2. The factory has over two __________ workers. 3. This great invention helps ______________ people around the world. 4. The telephone was invented more than a ____________ years ago. Hundreds of hundred hundreds of hundred 考点突破 2. Hundreds of kinds of dishes can be made by Smart Cook. (教材P42) 1. “hundreds of + 复数名词” 是不确切的大数表达，表示模糊的“数以百计的”，用来形容数量很多，但不给出具体的数字。 2. 结构要求：hundred 必须用复数形式 hundreds，后面必须加 of，不能直接跟名词。 例：Hundreds of visitors come to this ancient town every year. 每年成百上千的游客来到这座古镇。 3. 当表示具体的数字（几百）时，用“基数词 + hundred + 复数名词”，此时 hundred 必须用单数，不能加 of。 例：I have five hundred postcards. 我有五百张明信片。 考点突破 1. The telephone ________________ people’s communication. 电话对人们的交流产生了巨大影响。 2. New high‑tech inventions ________________ our daily life now.新的高科技发明现在对我们的日常生活有很大影响。 3. The wheel ________________ the development of transport hundreds of years ago. 数百年前，轮子对交通的发展产生了巨大影响。 3. It also had a big effect on music. (教材P44) has a big effect on have a big effect on had a big effect on 考点突破 1. have a big effect on 对……有很大的影响 2. 拓展使用 have a great effect on 有巨大影响 have a strong effect on 有强烈影响 have a bad effect on 对……有不良影响 have a good effect on 对……有好的影响 have no effect on 对……毫无影响 3. It also had a big effect on music. (教材P44) 考点突破 3. effect ＆ affect辨析 • effect：名词，意为“影响；效果” 常见短语：have an effect on • affect：动词，意为“影响” 常用搭配：sth. affects sb./sth. 例：The Internet has a big effect on our life. = The Internet affects our life greatly. 互联网对我们的生活影响很大。 3. It also had a big effect on music. (教材P44) 考点突破 4. It wasn’t supposed to make such a loud noise when the button was pressed to start the machine. (教材P45) 1. You ______________________ (not, smoke) in the library. It’s against the rules. 你不应该在图书馆抽烟，这是违反规则的。 2. You ______ to the party if you don’t finish your homework first. A. are not supposed to come B. were not supposed to come C. are supposed not to come D. were supposed not to come A are not supposed to smoke 考点突破 4. It wasn’t supposed to make such a loud noise when the button was pressed to start the machine. (教材P45) 1. be supposed to do sth. 表示“应该做某事”(=should do sth.)，用来提出建议、劝告、要求，或描述按规则/常理/约定等应该做的事。 例：You are supposed to wear a seatbelt in the car. 乘车时你应该系安全带。 2. be supposed to be sth. 表示“被认为/被普遍认为是……”，用来描述人们对某人/某事的普遍预期、看法。 例：He is supposed to be an expert in this field. 他被认为是这个领域的专家。 考点突破 4. It wasn’t supposed to make such a loud noise when the button was pressed to start the machine. (教材P45) 3. was/were supposed to意为“过去本应、本该”，表示应该做某事，但实际没做。 例：The train was supposed to arrive at 8, but it was late. 火车本应8点到，但晚点了。 4. 否定式 be not supposed to表示“不允许、不应该”，相当于 should not / be not allowed to。 例：You are not supposed to smoke here. 这里不允许吸烟。 考点突破 1. The great invention was responsible ______ the fast spread of information. A. in B. to C. for D. about 2. Who ______________ checking the new machine? 谁负责检测这台新机器？ 3. Everyone should be ____________ for their own work. 每个人都应当对自己的工作负责。 is responsible for C responsible 5. It, more than any other invention, was responsible for the rapid spread of information that shaped our modern world. (教材P46) 考点突破 responsible adj. 作为原因的，有责任的 常用短语：be responsible for sth. 例句：This great invention was responsible for the fast development of information. 这项伟大的发明促成了信息的快速发展。 5. It, more than any other invention, was responsible for the rapid spread of information that shaped our modern world. (教材P46) 考点突破 短语：be responsible for + 名词/代词/动名词 (doing) 中文含义 1：对……负责（人/主体承担责任） 2：是……的原因；导致（事物/事件引发结果） 词性结构 形容词短语：responsible 是形容词，必须搭配be动词 5. It, more than any other invention, was responsible for the rapid spread of information that shaped our modern world. (教材P46) 语法突破 1. The telephone ____________ (invent) by Bell in 1876. 2. New technologies _____________ (introduce) into our daily life every year. 3. The old letters ______________ (should, keep) well in the museum. 4. The first computer ____________ (make) in 1946. 5. More convenient transport ____________ (will, build) with the development of society. was invented was made are introduced should be kept will be built 被动语态 语法突破 1. 主动：People plant many trees in the park every year. 被动：____________________________________________________ 2. 被动：A new library was built in our community last year. 主动：____________________________________________________ 3. 主动：We use this kind of machine in our daily life. 被动：___________________________________________________ Many trees are planted in the park every year (by people). 被动语态 People built a new library in our community last year. This kind of machine is used in our daily life (by us). 语法突破 主动语态：People connect a mini-camera to the front of the glasses. 被动语态：A mini-camera is connected to the front of the glasses. 1.在主动语态中，句子的______是动作的__________. 2.在被动语态中，句子的______是动作的__________. 主语 执行者 承受者 主语 被动语态 语法突破 The Passive Voice (3)如何判断语态 (1)含义 表示________________________________________ (2)结构 主语 + be +______________ The Passive Voice 动词过去分词 找出句子中的主语和动词，判断主语和动词的关系 主语被……，主语承受了动作 Alexander Bell invented the telephone. The telephone was invented by Alexander Bell. 语法突破 常用时态的被动结构 • 一般现在时：_____________ + done 例：The telephone ______ used all over the world now. • 一般过去时：_____________ + done 例：The telephone ____________ invented in 1876. • 一般将来时：_____________ + done 例：New phones________ developed in the near future. • 情态动词被动：______________________________ + be + done 例：These old inventions ____________ protected well. am / is / are is was / were was will be will be 情态动词 (must / can / should) should be 语法突破 主动语态变被动语态 1. 把宾语变_____________ 2. 动词改为________________ 3. 原主语前加_____________ 4. 时态保持_____________ 例：People _______ rice. → Rice_________ by people. 口诀： 主变____，宾变____， 谓语be后过分词，然后再加介词____。 主语 be + 过去分词 by（可省略） 一致 grow is grown 宾 主 by Task 1 Let’s role-play Imagine you interview an inventor about his great invention. Think about the invention process and its influence. Discuss it with your partner. Then role-play the conversation. —What were you trying to solve when you made the invention? —I just wanted to ... —What challenges did you meet during the invention process? —I had difficulty in ... —When was your invention completed? —It was completed in ... —How has your invention changed the world? —It has made our life much easier and faster. —Why could you create such a great invention? —Creative ideas and hard work led to its success. Task 2 Let’s write Imagine you are a guide and introduce a great invention to visitors. Write a short passage first. What invention are you going to introduce? Who invented it and when was it made? How has this invention changed our life? Summary Talk about inventions. 话题梳理 Power of Ideas Discuss how inventions change our lives. Describe inventions using the passive voice. Explore the stories of inventors and inventions. Summary 要点回顾 （1）be used for 的用法 （2）hundreds of 和具体数字+hundred的不同用法 （3）have a big effect on 的用法 （4）be supposed to do / be sth 的用法 （5）be responsible for sth. 的用法 （6）被动语态 Homework 1．Review what we learned in this unit. 2．Preview Unit 6 Beyond Earth. Unit 5 Thank you! Time to Relax $