Unit 5 Power of Ideas 单元词汇重难点、易错点精练2026-2027学年人教版九年级英语上册

该初中英语单元知识清单聚焦“Power of Ideas”单元词汇重难点与易错点，涵盖基础词汇背默、句子语境运用、语篇综合训练三大范畴，搭建从词汇识记拼写、搭配规则理解到语篇灵活调用的递进式学习支架。 清单以分级设计强化知识系统性，基础层通过词汇默写、短语背默及单词变形夯实基础，如invention→invent→inventor的词性转换训练思维品质；进阶层结合句子语境练习词汇搭配，单项选择强化词义辨析；拓展层通过语篇综合练提升语言能力，如完形填空围绕“创意发明”主题培养综合运用能力。清单助力学生自主巩固，教师可精准设计分层教学，提升课堂效率。

Unit 5 Power of Ideas 词汇重难点、易错点精练 目录 · 基础层 (Level A) 重点词汇背默练 通过背默单元核心词汇，夯实本单元的词汇基础，解决词汇的识记和拼写问题。 · 进阶层 (Level B) 词汇句子语境练 在掌握核心词汇词义和拼写的基础上，通过在句子中练习词汇，体会词汇在具体语境中的用法，熟悉词汇的搭配规则和适用场景，深化对词汇的理解与运用能力。 · 拓展层 (Level C) 词汇语篇综合练 结合单元主题，将词汇融入综合性语篇练习中，训练在完整语篇中灵活调用词汇的能力，同时帮助建立词汇和主题语境的关联，提升综合语言运用能力。 重点词汇背默练 一、词汇默写 学科网（北京）股份有限公司 1. invention n. 发明；创造 2. camera n. 照相机；摄影机 3. super adj. 超级的；顶好的 4. sunglasses n. 墨镜 5. button n. 按钮；扣子 6. itself pron. 它自己 7. printer n. 打印机；印刷公司 8. produce v. 生产；繁育 9. file n.（计算机的）文件；文件夹 10. plastic n. 塑料 adj. 塑料的 11. invent v. 发明；编造 12. telephone n. 电话 13. suppose v. 认为；推断 14. wheel n. 车轮；轮子 15. eastern adj. 东部的；东方的 16. frozen adj. 冻硬的；冰封的 17. tourism n. 旅游业 18. economic adj. 经济的；经济学的 19. gain v. 获得；取得 20. reality n. 现实；事实 21. responsible adj. 有责任的；应负责的 22. rapid adj. 迅速的；瞬间的 23. shape v. 塑造 n. 形状 24. stone n. 石头；岩石 25. expensive adj. 昂贵的；价格高的 26. officer n. 官员；军官 27. none pron. 没有一个；毫无 28. ideal adj. 理想的；最合适的 n. 理想；完美的人（或事物） 29. certain adj. 某些；确定的 pron.（不提及人或事物的名称时用）某些 30. suitable adj. 合适的；适宜的 31. liquid n. 液体 adj. 液体的 32. cheap adj. 便宜的 adv. 低廉地 33. creation n. 创造；作品 34. birth n. 诞生；出现 35. rapidly adv. 迅速地；快速地 36. afford v. 买得起；能做 37. company n. 公司；陪伴 38. production n. 生产；制作 39. gradually adv. 逐渐地；逐步地 40. widely adv. 广泛地；普遍地 二、核心短语默写 1. hundreds (of ...) 许多；大量 2. be supposed to do / be sth 应当做某事；应该是某物 3. be responsible for sth 对……负责；引起某事 4. later on 后来；其后 5. speed up （使）加速 6. result in 造成；导致 7. lead to 导致；造成 8. be looking to do sth 试图找到做某事的方法 三、单词变形 1. invention n.发明；创造 → invent v.发明；编造 → inventor n.发明家 2. printer n.打印机 → print v.打印 3. produce v.生产 → product n.产品 → production n.生产 4. invent v.发明 → invention n.发明 → inventor n.发明家 5. eastern adj.东部的 → east n.东方；adj.东方的 6. frozen adj.冻硬的 → freeze v.冰冻 → freezing adj.极冷的 7. tourism n.旅游业 → tour v./n.旅行 → tourist n.游客 8. economic adj.经济的 → economy n.经济 9. reality n.现实 → real adj.真的 → really adv.真正地 → realize v.认识到；实现 10. responsible adj.有责任的 → responsibility n.责任 11. rapid adj.迅速的 → rapidly adv.迅速地 12. officer n.官员 → office n.办公室 13. certain adj.某些；确定的 → certainly adv.当然；确定地 → uncertain adj.不确定的 14. suitable adj.合适的 → suit v.适合 → suitably adv.合适地 15. creation n.创造 → create v.创造 → creative adj.有创造力的 → creator n.创造者 16. gradually adv.逐渐地 → gradual adj.逐渐的 17. widely adv.广泛地 → wide adj.宽的；广泛的 词汇句子语境练 一、根据提示填写单词 1．Thomas Edison was a great i______ who invented the light bulb. 【答案】inventor 【详解】句意：托马斯·爱迪生是一位伟大的发明家，他发明了电灯泡。根据首字母i及"who invented the light bulb"可知此处指"发明家"，inventor意为"发明家"，可数名词，空前有a，用单数形式。故填inventor。 2．This new machine can p______ 1,000 products every day. 【答案】produce 【详解】句意：这台新机器每天能生产1000件产品。根据首字母p及"1,000 products every day"可知此处指"生产"，produce意为"生产"，情态动词can后接动词原形。故填produce。 3．The water in the river is f______ in winter because the temperature is very low. 【答案】frozen 【详解】句意：冬天河里的水是冻住的，因为温度很低。根据首字母f及"in winter...temperature is very low"可知此处指"冻硬的"，frozen意为"冻硬的"，形容词作表语。故填frozen。 4．Nowadays, mobile phones are w______ used all over the world. 【答案】widely 【详解】句意：如今，手机在世界各地被广泛使用。根据首字母w及"used all over the world"可知此处指"广泛地"，widely意为"广泛地"，副词修饰动词used。故填widely。 5．The internet has changed our life r______ in the past few years. 【答案】rapidly 【详解】句意：在过去的几年里，互联网已经迅速地改变了我们的生活。根据首字母r及"in the past few years"可知此处指"迅速地"，rapidly意为"迅速地"，副词修饰动词changed。故填rapidly。 6．We all ______（认为）that he is the best person for this job. 【答案】suppose 【详解】句意：我们都认为他是这份工作最合适的人选。中文提示"认为"，对应suppose；由all可知用一般现在时，主语we为复数，suppose用原形。故填suppose。 7．The ______（经济）growth of our country has been very fast in recent years. 【答案】economic 【详解】句意：我国的经济增长近年来非常快。中文提示"经济"，但此处修饰名词growth，需用形容词economic，意为"经济的"，作定语。故填economic。 8．The manager is ______（有责任的）for the whole project. 【答案】responsible 【详解】句意：这位经理对整个项目负责。中文提示"有责任的"，对应responsible；be responsible for为固定搭配，意为"对……负责"，形容词作表语。故填responsible。 9．This pair of shoes is too ______（昂贵的）for me to buy. 【答案】expensive 【详解】句意：这双鞋太贵了我买不起。中文提示"昂贵的"，对应expensive；too...to...结构，形容词作表语。故填expensive。 10．She ______（逐渐地）realized that she had made a mistake. 【答案】gradually 【详解】句意：她逐渐地意识到自己犯了一个错误。中文提示"逐渐地"，对应gradually，副词作状语修饰realized。故填gradually。 11．There are h______ of people waiting outside the cinema. 【答案】hundreds 【详解】句意：有数百人正在电影院外面等候。根据首字母h及"of people"可知考查短语hundreds of，意为"大量的；数百的"，hundred用复数形式。故填hundreds。 12．Parents should be ______（有责任的）for their children's education. 【答案】responsible 【详解】句意：父母应该对孩子的教育负责。中文提示"有责任的"，对应responsible；be responsible for为固定搭配，意为"对……负责"。故填responsible。 二、用所给单词的正确形式填空 13．The ______ (invent) of the smartphone has changed the way we live. 【答案】invention 【详解】句意：智能手机的发明改变了我们的生活方式。括号内invent是动词"发明"，空格处作主语，由has changed可知需用名词单数；invention意为"发明"，作主语。故填invention。 14．The lake is ______ (freeze) in winter, so we can skate on it. 【答案】frozen 【详解】句意：这个湖在冬天结冰了，所以我们可以在上面滑冰。括号内freeze是动词"冰冻"，空格前is为系动词，需用形容词作表语；frozen意为"冻硬的"，表示状态。故填frozen。 15．I'm not ______ (certainly) whether he will come to the party. 【答案】certain 【详解】句意：我不确定他是否会来参加聚会。括号内certainly是副词"当然地"，空格前am not为系动词，需用形容词作表语；certain意为"确定的"，be certain意为"确定"。故填certain。 16．The food in this restaurant is cheap and ______ (suit) for students. 【答案】suitable 【详解】句意：这家餐馆的食物便宜且适合学生。括号内suit是动词"适合"，空格前is为系动词，需用形容词作表语；suitable意为"合适的"，be suitable for意为"适合……"。故填suitable。 17．The ______ (create) of this painting took the artist three years. 【答案】creation 【详解】句意：这幅画的创作花了这位艺术家三年时间。括号内create是动词"创造"，空格处作主语，由took可知需用名词单数；creation意为"创造；作品"，作主语。故填creation。 18．We should take ______ (responsible) for our own actions. 【答案】responsibility 【详解】句意：我们应该对自己的行为负责。括号内responsible是形容词"有责任的"，空格前take为动词，需用名词形式作宾语；responsibility意为"责任"，take responsibility for为固定搭配。故填responsibility。 19．She is a ______ (create) designer who always comes up with new ideas. 【答案】creative 【详解】句意：她是一位有创造力的设计师，总是能想出新的点子。括号内create是动词"创造"，空格后designer为名词，需用形容词修饰；creative意为"有创造力的"，作定语。故填creative。 20．The price of this house is ______ (reasonable) high for most people. 【答案】reasonably 【详解】句意：这所房子的价格对大多数人来说相当高。括号内reasonable是形容词"合理的"，此处修饰形容词high，需用副词形式reasonably，意为"相当地；合理地"。故填reasonably。 21．We should ______ (real) that hard work leads to success. 【答案】realize 【详解】句意：我们应该认识到努力工作会带来成功。括号内real是形容词"真的"，空前should为情态动词，后接动词原形；realize意为"认识到"，作谓语。故填realize。 22．The ______ (tour) industry brings a lot of money to this city every year. 【答案】tourism 【详解】句意：旅游业每年给这座城市带来大量收入。括号内tour是动词/名词"旅行"，空格后industry为名词，需用名词作定语；tourism意为"旅游业"，tourism industry为固定说法。故填tourism。 23．The problem was ______ (gradual) solved with the help of the teacher. 【答案】gradually 【详解】句意：在老师的帮助下，这个问题逐渐被解决了。括号内gradual是形容词"逐渐的"，此处修饰动词solved，需用副词形式gradually，意为"逐渐地"。故填gradually。 24．The company ______ (production) over 10,000 cars last year. 【答案】produced 【详解】句意：这家公司去年生产了超过一万辆汽车。括号内production是名词"生产"，此处作谓语需用动词produce；由last year可知用一般过去时，produce的过去式为produced。故填produced。 25．______ (hundred) of students took part in the science competition. 【答案】Hundreds 【详解】句意：数百名学生参加了科学竞赛。括号内hundred是数词"百"，hundreds of为固定搭配，意为"数百的"；位于句首首字母大写。故填Hundreds。 三、单项选择 26．The new machine can ______ 200 bottles of water every hour. A. produce B. invent C. suppose D. afford 【答案】A 【详解】句意：这台新机器每小时能生产200瓶水。produce生产；invent发明；suppose认为；afford买得起。由"200 bottles of water"可知是生产产品，produce符合语境。故填A。 27．The sudden rainstorm ______ a serious traffic accident on the highway. A. resulted in B. speeded up C. led of D. looked to 【答案】A 【详解】句意：突如其来的暴雨在高速公路上导致了一起严重的交通事故。result in造成/导致；speed up加速；无led of搭配；look to指望。由"a serious traffic accident"可知是导致了事故，resulted in符合语境。故填A。 28．You ______ arrive at the airport two hours before the flight. A. are supposed to B. are responsible for C. are looking to D. are used to 【答案】A 【详解】句意：你应该在航班起飞前两小时到达机场。are supposed to应该；are responsible for对……负责；are looking to试图；are used to习惯于。由"two hours before the flight"可知是应该做的事，are supposed to符合语境。故填A。 29．We should ______ the development of new energy to protect the environment. A. speed up B. result in C. lead to D. look to 【答案】A 【详解】句意：我们应该加速新能源的发展来保护环境。speed up加速；result in导致；lead to导致；look to指望。由"the development of new energy"可知是加速发展，speed up符合语境。故填A。 30．The ______ of the telephone made communication much easier. A. invention B. creator C. production D. tourism 【答案】A 【详解】句意：电话的发明使交流变得容易得多。invention发明；creator创造者；production生产；tourism旅游业。由"of the telephone"及"made communication easier"可知是电话的发明，invention符合语境。故填A。 31．Good study habits ______ good grades in the end. A. result in B. speed up C. belong to D. lead in 【答案】A 【详解】句意：好的学习习惯最终会带来好成绩。result in导致/带来；speed up加速；belong to属于；lead in引入。由"good grades"可知是带来好成绩，result in符合语境。故填A。 32．The company is ______ new ways to reduce the cost of production. A. looking to B. supposed to C. responsible for D. speeding up 【答案】A 【详解】句意：这家公司正在试图找到降低生产成本的新方法。looking to试图（be looking to do sth）；supposed to应该；responsible for对……负责；speeding up加速。由"new ways"可知是试图找到新方法，looking to符合语境。故填A。 33．This kind of plastic bag is ______ for carrying heavy things. A. suitable B. certain C. expensive D. rapid 【答案】A 【详解】句意：这种塑料袋适合装重物。suitable合适的；certain确定的；expensive昂贵的；rapid迅速的。由"for carrying heavy things"可知是适合装重物，be suitable for为固定搭配。故填A。 34．We should be ______ for our own decisions and actions. A. responsible B. rapid C. economic D. frozen 【答案】A 【详解】句意：我们应该对自己的决定和行为负责。responsible有责任的；rapid迅速的；economic经济的；frozen冰冻的。由"for our own decisions"可知是对自己的决定负责，be responsible for为固定搭配。故填A。 35．The new policy will ______ great changes in the education system. A. result in B. speed up C. look to D. be responsible for 【答案】A 【详解】句意：这项新政策将给教育体制带来巨大变化。result in造成/导致；speed up加速；look to指望；be responsible for对……负责。由"great changes"可知是导致变化，result in符合语境。故填A。 36．The computer ______ is very important for modern office work. A. printer B. camera C. button D. file 【答案】A 【详解】句意：打印机对于现代办公室工作非常重要。printer打印机；camera照相机；button按钮；file文件。由"for modern office work"及常识可知打印机是重要办公设备，printer符合语境。故填A。 37．He couldn't ______ the expensive car because it cost too much. A. afford B. produce C. invent D. gain 【答案】A 【详解】句意：他买不起这辆昂贵的车，因为它太贵了。afford买得起；produce生产；invent发明；gain获得。由"because it cost too much"可知是买不起，couldn't afford符合语境。故填A。 38．The idea ______ from a simple conversation between two friends. A. was born B. was produced C. was invented D. was supposed 【答案】A 【详解】句意：这个想法诞生于两个朋友之间的一次简单交谈。be born意为"诞生"，表示起源；produced生产；invented发明；supposed认为。由"from a simple conversation"可知是起源于谈话，was born符合语境。故填A。 39．The city has developed ______ in the past ten years. A. rapidly B. widely C. gradually D. certainly 【答案】A 【详解】句意：这座城市在过去十年中发展迅速。rapidly迅速地；widely广泛地；gradually逐渐地；certainly当然。由"in the past ten years"及城市发展语境可知用rapidly表示快速发展。故填A。 40．Please save the ______ before you turn off the computer. A. file B. button C. printer D. wheel 【答案】A 【详解】句意：请在你关电脑之前保存文件。file文件；button按钮；printer打印机；wheel车轮。由"before you turn off the computer"可知是保存电脑文件，file符合语境。故填A。 41．The ______ scenery in the eastern part of the country attracts many tourists. A. ideal B. rapid C. economic D. frozen 【答案】A 【详解】句意：这个国家东部的理想风景吸引了许多游客。ideal理想的；rapid迅速的；economic经济的；frozen冰冻的。由"attracts many tourists"可知风景很美，ideal符合语境。故填A。 42．You should click the ______ to start the machine. A. button B. file C. camera D. plastic 【答案】A 【详解】句意：你应该按下按钮来启动机器。button按钮；file文件；camera相机；plastic塑料。由"to start the machine"可知是按按钮启动，button符合语境。故填A。 43．______ new inventions appear every year to make our life better. A. Hundreds of B. Hundred of C. A hundred of D. The hundred of 【答案】A 【详解】句意：每年都有数百项新发明出现，使我们的生活更美好。hundreds of为固定搭配，意为"数百的；大量的"，表示约数；hundred前不加a或the。B、C、D形式均错误。故填A。 44．The ______ of the stone is very hard and not easy to break. A. shape B. file C. button D. wheel 【答案】A 【详解】句意：这块石头的形状非常坚硬，不容易打破。shape形状；file文件；button按钮；wheel轮子。由"of the stone"及"hard"可知描述的是石头的形状，shape符合语境。故填A。 45．______ of the students in our class has ever been to the science museum. A. None B. Nobody C. No one D. Neither 【答案】A 【详解】句意：我们班没有一个学生去过科学博物馆。none没有一个，强调数量，后可接of；nobody没有人；no one没有人；neither两者都不。由"of the students"可知用none of结构。故填A。 词汇语篇综合练 四、选词填空 阅读下面的短文，用方框中所给词的适当形式填空，使文意通顺，结构正确（每个单词限用一次）。 create, produce, design, send, read, connect, press, invent, use, develop The 3D printer is one of the most amazing 46 of modern times. Almost everything under the sun can be 47 by it. How does it work? First, the object is 48 on a computer. Then, a file is 49 and 50 to the 3D printer. The 3D printer 51 the file, and after that, the object is made by building up plastic. The 3D printer has many uses. In medicine, arms and legs can be 52 to the body. In daily life, toys, chairs, and tables can all be made. It can even be 53 to make food! The 3D printer shows us how creative ideas can 54 our lives. As technology continues to 55 forward, we can expect even more amazing inventions in the future. 【答案】46．inventions 47．produced 48．designed 49．created 50．sent 51．reads 52．connected 53．used 54．develop 55．press 【导语】本文是一篇说明文，主要讲了3D 打印机这项发明的工作原理、在医学和日常生活中的多种用途，以及科技发展会带来更多新发明。 【详解】46．句意：3D 打印机是当代最令人惊叹的发明之一。固定结构“one of+the+形容词最高级+可数名词复数”，此处需要一个可数名词复数，作表语，表示 “发明物”。3D打印机是一种“发明”，应选用invent“发明”，其名词形式为invention，复数形式为inventions。 47．句意：几乎所有东西都可以由它制造出来。空前“can be”后需用过去分词构成被动语态；东西可以被3D打印机“制造”出来，应选用produce“制造”，其过去分词为produced。 48．句意：首先，物体在电脑上被设计出来。空前“is”后需用过去分词构成被动语态；物体需要先被“设计”出来，应选用design“设计”，其过去分词为designed。 49．句意：然后，一个文件被创建并发送到3D打印机。空前“is”后需用过去分词构成被动语态；文件需要被“创建”，应选用create“创建”，其过去分词为created。 50．句意：然后，一个文件被创建并发送到3D打印机。空前“is”后需用过去分词构成被动语态；文件创建后需要被“发送”，应选用send“发送”，其过去分词为sent。 51．句意：3D打印机读取文件。空前“The 3D printer”为单数主语，需用动词第三人称单数形式作谓语；打印机先要“读取”文件，应选用read“读取”，其第三人称单数形式为reads。 52．句意：在医学领域，手臂和腿可以被连接到身体上。空前“can be”后需用过去分词构成被动语态；手臂和腿被“连接”到身体，应选用connect“连接”，其过去分词为connected。 53．句意：它甚至可以被用来制作食物！空前“can be”后需用过去分词构成被动语态；3D打印机可以被“用来”制作食物，应选用use“使用”，其过去分词为used，be used to do意为“被用来做”。 54．句意：3D打印机向我们展示了创意想法如何改变我们的生活。空前“can”提示需用动词原形；创意想法“改变”生活，应选用develop“发展/改变”，为动词原形。 55．句意：随着科技继续奋力向前推进，我们可以期待未来会有更多令人惊叹的发明。固定搭配continue to do sth“继续做某事”，需用动词原形，放在to后面作宾语，“推进”技术向前发展。“press forward”是固定短语 “奋力向前推进”，应选用press“推进”，用原形。 五、完形填空 阅读短文，从每小题所给的四个选项中，选出一个能填入空白处的最佳选项。 It was a rainy, windy October afternoon. Garth stood outside his house with a wide smile. This was 56 weather for testing his new invention-Umbrella Hat. He could hardly wait to see whether it could keep the rain off. He carefully placed the hat on his head and started walking 57 along the street. It worked! Suddenly, three boys in his neighbourhood appeared and 58 him. Todd, the biggest one, pulled his Umbrella Hat off his head. “What's THIS?” he asked. “It’s an Umbrella Hat. You can 59 it on rainy days and…”Garth said. The boys 60 “Will anyone wear that stupid thing?”Todd threw the hat onto the ground and they ran off. Garth picked up his Umbrella Hat from the ground in tears.“Maybe Todd was 61 -in reality, who would ever need his invention?” He lowered his head and thought to himself. Suddenly he 62 and saw a lady looking at him.“I was just leaving my house 63 I saw you and those boys. Are you okay?” Then she saw the 64 Umbrella Hat and asked,“Er…what’s that?”“It’s my Umbrella Hat. I thought of it and made it myself…” answered Garth. “What a creative 65 you have! Don’t ever let stupid boys put you down! Keep inventing and one day you will 66 something really great!” said the lady. “And you have given me a wonderful 67 ,”she continued,“I have a gadget (小器具) shop-Gadgets4U-and I’d like to hold a 68 to find the best young gadget inventor in our town. I will display (展示) three best inventions in my shop. I’m sure you will have a(n) 69 of winning a prize.” Garth was very 70 . Gadgets 4U was one of his favourite places and the thought of having his invention displayed in that wonderful place was too exciting for words.He suddenly felt much better and could already feel lots of new ideas coming out, waiting to spring into life! 56．A．cold B．perfect C．strange D．changeable 57．A．heavily B．madly C．thankfully D．purposefully 58．A．guided B．praised C．stopped D．refused 59．A．raise B．wear C．drop D．repair 60．A．replied B．laughed C．wondered D．greeted 61．A．right B．angry C．polite D．silly 62．A．came up B．gave up C．looked up D．showed up 63．A．when B．until C．if D．after 64．A．ugly B．old C．broken D．tiny 65．A．mind B．habit C．game D．tool 66．A．show B．meet C．plan D．create 67．A．skill B．gift C．idea D．job 68．A．party B．meeting C．conversation D．competition 69．A．choice B．chance C．excuse D．experience 70．A．surprised B．bored C．relaxed D．worried 【答案】56．B 57．D 58．C 59．B 60．B 61．A 62．C 63．A 64．C 65．A 66．D 67．C 68．D 69．B 70．A 【导语】本文讲述了Garth发明伞帽遭嘲笑后，在一位女士的鼓励下重拾信心，并获得参加发明比赛机会的故事。 【详解】56．句意：这是测试新发明的完美的天气。 根据“testing his new invention—Umbrella Hat”及下雨刮风的天气可知，这种天气适合测试伞帽，所以是完美的。 57．句意：他小心地把帽子戴在头上，开始有目的地沿着街道走。 根据“He could hardly wait to see whether it could keep the rain off”可知，他急着测试，走路是有目的性的。 58．句意：三个男孩出现了并拦住了他。 根据“Todd…pulled his Umbrella Hat off his head”可知，男孩们阻止了他前行。 59．句意：你可以在雨天戴它。 根据“Umbrella Hat”及语境可知，帽子是用来戴的。 60．句意：男孩们嘲笑道：“谁会戴那种愚蠢的东西？” 根据“stupid thing”及把帽子扔地上的行为可知，他们在嘲笑。 61．句意：也许Todd是对的。 根据Garth流泪并怀疑“who would ever need his invention”可知，他此时认为Todd说得对。 62．句意：突然，他抬起头，看到一位女士正看着他。 根据“He lowered his head”及“saw a lady”可知，低头后抬头看见人。 63．句意：我刚要离开家时看见了你。 根据“was just leaving… I saw”可知，此处表示正在做某事这时发生了另一件事，用when。 64．句意：她看到坏掉的雨伞帽。 根据"Todd threw the hat onto the ground"可知，帽子被扔地上应已损坏，broken符合题意。A项ugly“丑陋的”；B项old“旧的”；D项tiny“微小的”与句意不符。 65．句意：多有创造力的头脑啊！ 根据“creative”及发明东西可知，女士称赞他有创造性的思维。 66．句意：你会创造真正伟大的东西！ 根据“Keep inventing”可知，发明家会创造东西。A项show“展示”；B项meet“遇见”；C项plan“计划”与逻辑不符。 67．句意：你还给了我一个绝妙的想法。 根据女士随后提出举办比赛可知，Garth给了她一个想法。 68．句意：我想举办一场比赛。 根据“find the best young gadget inventor”可知，寻找最佳发明家需要比赛。A项party“派对”；B项meeting“会议”；C项conversation“对话”与句意不符合。 69．句意：我相信你有机会赢得奖品。 根据“winning a prize”及参加比赛可知，是有获奖的机会。 70．句意：Garth非常惊讶。 根据“Gadgets4U was one of his favourite places”及意外获得机会可知，他感到惊讶且兴奋。 $ Unit 5 Power of Ideas 词汇重难点、易错点精练 目录 · 基础层 (Level A) 重点词汇背默练 通过背默单元核心词汇，夯实本单元的词汇基础，解决词汇的识记和拼写问题。 · 进阶层 (Level B) 词汇句子语境练 在掌握核心词汇词义和拼写的基础上，通过在句子中练习词汇，体会词汇在具体语境中的用法，熟悉词汇的搭配规则和适用场景，深化对词汇的理解与运用能力。 · 拓展层 (Level C) 词汇语篇综合练 结合单元主题，将词汇融入综合性语篇练习中，训练在完整语篇中灵活调用词汇的能力，同时帮助建立词汇和主题语境的关联，提升综合语言运用能力。 重点词汇背默练 一、词汇默写 学科网（北京）股份有限公司 1. __________ n. 发明；创造 2. __________ n. 照相机；摄影机 3. __________ adj. 超级的；顶好的 4. __________ n. 墨镜 5. __________ n. 按钮；扣子 6. __________ pron. 它自己 7. __________ n. 打印机；印刷公司 8. __________ v. 生产；繁育 9. __________ n.（计算机的）文件；文件夹 10. __________ n. 塑料 adj. 塑料的 11. __________ v. 发明；编造 12. __________ n. 电话 13. __________ v. 认为；推断 14. __________ n. 车轮；轮子 15. __________ adj. 东部的；东方的 16. __________ adj. 冻硬的；冰封的 17. __________ n. 旅游业 18. __________ adj. 经济的；经济学的 19. __________ v. 获得；取得 20. __________ n. 现实；事实 21. __________ adj. 有责任的；应负责的 22. __________ adj. 迅速的；瞬间的 23. __________ v. 塑造 n. 形状 24. __________ n. 石头；岩石 25. __________ adj. 昂贵的；价格高的 26. __________ n. 官员；军官 27. __________ pron. 没有一个；毫无 28. __________ adj. 理想的；最合适的 n. 理想；完美的人（或事物） 29. __________ adj. 某些；确定的 pron.（不提及人或事物的名称时用）某些 30. __________ adj. 合适的；适宜的 31. __________ n. 液体 adj. 液体的 32. __________ adj. 便宜的 adv. 低廉地 33. __________ n. 创造；作品 34. __________ n. 诞生；出现 35. __________ adv. 迅速地；快速地 36. __________ v. 买得起；能做 37. __________ n. 公司；陪伴 38. __________ n. 生产；制作 39. __________ adv. 逐渐地；逐步地 40. __________ adv. 广泛地；普遍地 二、核心短语默写 1. __________ 许多；大量 2. __________ 应当做某事；应该是某物 3. __________ 对……负责；引起某事 4. __________ 后来；其后 5. __________ （使）加速 6. __________ 造成；导致 7. __________ 导致；造成 8. __________ 试图找到做某事的方法 三、单词变形 1. invention n.发明；创造 → __________ v.发明；编造 → __________ n.发明家 2. printer n.打印机 → __________ v.打印 3. produce v.生产 → __________ n.产品 → __________ n.生产 4. invent v.发明 → __________ n.发明 → __________ n.发明家 5. eastern adj.东部的 → __________ n.东方；adj.东方的 6. frozen adj.冻硬的 → __________ v.冰冻 → __________ adj.极冷的 7. tourism n.旅游业 → __________ v./n.旅行 → __________ n.游客 8. economic adj.经济的 → __________ n.经济 9. reality n.现实 → __________ adj.真的 → __________ adv.真正地 → __________ v.认识到；实现 10. responsible adj.有责任的 → __________ n.责任 11. rapid adj.迅速的 → __________ adv.迅速地 12. officer n.官员 → __________ n.办公室 13. certain adj.某些；确定的 → __________ adv.当然；确定地 → __________ adj.不确定的 14. suitable adj.合适的 → __________ v.适合 → __________ adv.合适地 15. creation n.创造 → __________ v.创造 → __________ adj.有创造力的 → __________ n.创造者 16. gradually adv.逐渐地 → __________ adj.逐渐的 17. widely adv.广泛地 → __________ adj.宽的；广泛的 词汇句子语境练 一、根据提示填写单词 1．Thomas Edison was a great i______ who invented the light bulb. 2．This new machine can p______ 1,000 products every day. 3．The water in the river is f______ in winter because the temperature is very low. 4．Nowadays, mobile phones are w______ used all over the world. 5．The internet has changed our life r______ in the past few years. 6．We all ______（认为）that he is the best person for this job. 7．The ______（经济）growth of our country has been very fast in recent years. 8．The manager is ______（有责任的）for the whole project. 9．This pair of shoes is too ______（昂贵的）for me to buy. 10．She ______（逐渐地）realized that she had made a mistake. 11．There are h______ of people waiting outside the cinema. 12．Parents should be ______（有责任的）for their children's education. 二、用所给单词的正确形式填空 13．The ______ (invent) of the smartphone has changed the way we live. 14．The lake is ______ (freeze) in winter, so we can skate on it. 15．I'm not ______ (certainly) whether he will come to the party. 16．The food in this restaurant is cheap and ______ (suit) for students. 17．The ______ (create) of this painting took the artist three years. 18．We should take ______ (responsible) for our own actions. 19．She is a ______ (create) designer who always comes up with new ideas. 20．The price of this house is ______ (reasonable) high for most people. 21．We should ______ (real) that hard work leads to success. 22．The ______ (tour) industry brings a lot of money to this city every year. 23．The problem was ______ (gradual) solved with the help of the teacher. 24．The company ______ (production) over 10,000 cars last year. 25．______ (hundred) of students took part in the science competition. 三、单项选择 26．The new machine can ______ 200 bottles of water every hour. A. produce B. invent C. suppose D. afford 27．The sudden rainstorm ______ a serious traffic accident on the highway. A. resulted in B. speeded up C. led of D. looked to 28．You ______ arrive at the airport two hours before the flight. A. are supposed to B. are responsible for C. are looking to D. are used to 29．We should ______ the development of new energy to protect the environment. A. speed up B. result in C. lead to D. look to 30．The ______ of the telephone made communication much easier. A. invention B. creator C. production D. tourism 31．Good study habits ______ good grades in the end. A. result in B. speed up C. belong to D. lead in 32．The company is ______ new ways to reduce the cost of production. A. looking to B. supposed to C. responsible for D. speeding up 33．This kind of plastic bag is ______ for carrying heavy things. A. suitable B. certain C. expensive D. rapid 34．We should be ______ for our own decisions and actions. A. responsible B. rapid C. economic D. frozen 35．The new policy will ______ great changes in the education system. A. result in B. speed up C. look to D. be responsible for 36．The computer ______ is very important for modern office work. A. printer B. camera C. button D. file 37．He couldn't ______ the expensive car because it cost too much. A. afford B. produce C. invent D. gain 38．The idea ______ from a simple conversation between two friends. A. was born B. was produced C. was invented D. was supposed 39．The city has developed ______ in the past ten years. A. rapidly B. widely C. gradually D. certainly 40．Please save the ______ before you turn off the computer. A. file B. button C. printer D. wheel 41．The ______ scenery in the eastern part of the country attracts many tourists. A. ideal B. rapid C. economic D. frozen 42．You should click the ______ to start the machine. A. button B. file C. camera D. plastic 43．______ new inventions appear every year to make our life better. A. Hundreds of B. Hundred of C. A hundred of D. The hundred of 44．The ______ of the stone is very hard and not easy to break. A. shape B. file C. button D. wheel 45．______ of the students in our class has ever been to the science museum. A. None B. Nobody C. No one D. Neither 词汇语篇综合练 四、选词填空 阅读下面的短文，用方框中所给词的适当形式填空，使文意通顺，结构正确（每个单词限用一次）。 create, produce, design, send, read, connect, press, invent, use, develop The 3D printer is one of the most amazing 46 of modern times. Almost everything under the sun can be 47 by it. How does it work? First, the object is 48 on a computer. Then, a file is 49 and 50 to the 3D printer. The 3D printer 51 the file, and after that, the object is made by building up plastic. The 3D printer has many uses. In medicine, arms and legs can be 52 to the body. In daily life, toys, chairs, and tables can all be made. It can even be 53 to make food! The 3D printer shows us how creative ideas can 54 our lives. As technology continues to 55 forward, we can expect even more amazing inventions in the future. 五、完形填空 阅读短文，从每小题所给的四个选项中，选出一个能填入空白处的最佳选项。 It was a rainy, windy October afternoon. Garth stood outside his house with a wide smile. This was 56 weather for testing his new invention-Umbrella Hat. He could hardly wait to see whether it could keep the rain off. He carefully placed the hat on his head and started walking 57 along the street. It worked! Suddenly, three boys in his neighbourhood appeared and 58 him. Todd, the biggest one, pulled his Umbrella Hat off his head. “What's THIS?” he asked. “It’s an Umbrella Hat. You can 59 it on rainy days and…”Garth said. The boys 60 “Will anyone wear that stupid thing?”Todd threw the hat onto the ground and they ran off. Garth picked up his Umbrella Hat from the ground in tears.“Maybe Todd was 61 -in reality, who would ever need his invention?” He lowered his head and thought to himself. Suddenly he 62 and saw a lady looking at him.“I was just leaving my house 63 I saw you and those boys. Are you okay?” Then she saw the 64 Umbrella Hat and asked,“Er…what’s that?”“It’s my Umbrella Hat. I thought of it and made it myself…” answered Garth. “What a creative 65 you have! Don’t ever let stupid boys put you down! Keep inventing and one day you will 66 something really great!” said the lady. “And you have given me a wonderful 67 ,”she continued,“I have a gadget (小器具) shop-Gadgets4U-and I’d like to hold a 68 to find the best young gadget inventor in our town. I will display (展示) three best inventions in my shop. I’m sure you will have a(n) 69 of winning a prize.” Garth was very 70 . Gadgets 4U was one of his favourite places and the thought of having his invention displayed in that wonderful place was too exciting for words.He suddenly felt much better and could already feel lots of new ideas coming out, waiting to spring into life! 56．A．cold B．perfect C．strange D．changeable 57．A．heavily B．madly C．thankfully D．purposefully 58．A．guided B．praised C．stopped D．refused 59．A．raise B．wear C．drop D．repair 60．A．replied B．laughed C．wondered D．greeted 61．A．right B．angry C．polite D．silly 62．A．came up B．gave up C．looked up D．showed up 63．A．when B．until C．if D．after 64．A．ugly B．old C．broken D．tiny 65．A．mind B．habit C．game D．tool 66．A．show B．meet C．plan D．create 67．A．skill B．gift C．idea D．job 68．A．party B．meeting C．conversation D．competition 69．A．choice B．chance C．excuse D．experience 70．A．surprised B．bored C．relaxed D．worried $