Unit 5 Power of Ideas 核心考点精讲精练 2026-2027学年人教版英语九年级上册

Unit 5 Power of Ideas 核心考点精讲精练 一、核心词汇深度解析 （一）现代发明类名词 plane 飞机；camera 相机；laptop 笔记本电脑 mobile phone 手机；TV 电视；high-speed train 高铁 3D printer 3D 打印机；radio 收音机；robot 机器人 glasses 眼镜；mini-camera 微型相机；button 按钮 （二）古代发明 & 造纸相关 papermaking 造纸术；paper 纸；bamboo screen 竹帘 bark 树皮；fibre 纤维；ingredient 原料 bronze ware 青铜器；animal bone 兽骨；silk 丝绸 sticky notes 便利贴；glue 胶水 （三）发明创造核心动词 invent v. 发明 → inventor n. 发明者 → invention n. 发明物 create v. 创造 → creative adj. 有创造力的 → creation n. 创作 design v. 设计 produce v. 生产，制造 → product n. 产品 connect v. 连接；connect A to B 把 A 连接到 B send v. 发送（sent 过去式） spread v. 传播（spread 原形过去式同形） praise v. 赞扬 boil v. 煮沸；beat v. 捶打；press v. 按压 allow v. 允许 increase v. 提升，增加 solve v. 解决（难题） （四）描述材料、特征名词 material n. 材料；plastic n. 塑料 tunnel n. 隧道；track 铁轨；engine 发动机 glider 滑翔机；flight 飞行；distance 距离 （五）形容词 & 副词 rapid adj. 快速的；rapidly adv. 快速地 ideal adj. 理想的；soft adj. 柔软；light adj. 轻便 cheap adj. 便宜；expensive adj. 昂贵 public adj. 公共的；secret adj. 秘密 weak adj. 粘性弱；strong adj. 牢固 （六）词性转换表 表格 名词 动词 形容词 invention 发明 invent 发明 inventive 有创造力的 creativity 创造力 create 创造 creative 有创意的 product 产品 produce 生产 productive 多产的 collection 收藏品 collect 收集 collective 集体的 二、重点短语清单 1 被动高频搭配 be invented by 由…… 发明 be connected to 连接到 be added by 由…… 添加 be made by 由（人）制造 /be made of 由（材料）制成 be sent to 被发送到 be produced by 被生产 2 发明相关固定短语 spread information 传播信息 spread news 传播消息 cross the Atlantic Ocean 跨大西洋 take over boring work 包揽枯燥工作 solve different problems 解决各类难题 build tunnels 修建隧道 animal-friendly bridges 动物通道桥梁 speed up development 加速发展 3 造纸流程短语 mix and boil ingredients 混合并熬煮原料 beat and cut up material 捶打切碎原料 pour liquid over bamboo screen 将液体倒在竹帘上 dry and press fibre 纤维晾干压实 4 因果、结果短语 lead to 导致 result in 造成…… 结果 be responsible for 是…… 的成因 to one’s surprise 令某人惊讶的是 as a result 因此 5 生活科技短语 high-speed train 高铁 3D printer 3D 打印机 carry out test flight 试飞 protect eyes 保护眼睛 take notes 记笔记 三、核心语法突破：一般现在时 & 一般过去时被动语态 语法 1 被动语态基本结构 一般现在时被动：am /is/are + 动词过去分词 一般过去时被动：was /were + 动词过去分词 动作执行者：by + 人 / 事物（可省略） 规则动词变化 design-designed；connect-connected；add-added；produce-produced 不规则必考 send-sent；make-made；find-found；build-built；spread-spread；invent-invented 语法 2 用法区分 一般现在被动：描述客观事实、机器常规功能 A mini-camera is connected to the glasses. 一般过去被动：描述过去被发明、过去完成的工程 The radio was invented in the 1890s. The Qinghai-Xizang Railway was completed in 2006. 语法 3 情态动词被动：can be + 过去分词 Toys can be made by 3D printers. 语法 4 主动 vs 被动转换 主动：People invented the radio. 被动：The radio was invented by people. 语法 5 易混区分 be made of 能看出原材料（纸由树皮制成） be made from 看不出原材料 be made by 由某人 / 工厂制造 四、经典句型与写作素材 1 谈论发明交际句 What do you think is the greatest invention of all time? 你认为有史以来最伟大的发明是什么？ It changed the world and made our life much easier. 它改变世界，让我们生活更便捷。 News can be spread around the world quickly with radios. 借助广播，消息能快速传遍全球。 2 介绍发明写作万能句 … was invented by … in … …… 由…… 在…… 年发明。 This invention led to rapid development of culture. 这项发明推动文化快速发展。 Many problems were solved thanks to this creative idea. 多亏这个创意，许多难题得以解决。 3 造纸流程模板 In ancient times, people wrote on expensive materials. Later Cai Lun created new paper. First, he mixed and boiled bark and old clothes. Then the material was beaten and cut up. Next, the liquid was poured on a bamboo screen. Finally the fibre was dried and pressed into cheap light paper. 写作模板 My Favourite Invention My Favourite Invention My favourite invention is the high-speed train. It was invented by Chinese engineers. Many difficult problems were solved during its building. Special bridges and tunnels were created. It can take us to faraway cities in a short time. Also, it brings great development to tourism. This invention makes the world smaller. I believe more great inventions will be created in the future. 五、课堂实战演练 (一) 词义匹配 invent A. 创造 create B. 发明 spread C. 连接 connect D. 传播 result in E. 造成 (二) 单项选择 1. The radio ______ by Marconi in 1901. A. invented B. was invented C. is invented 2. Toys ______ by 3D printers now. A. can make B. can be made C. are make 3. Paper ______ from bark and old clothes in Cai Lun’s time. A. made B. was made C. is made 4. The letters ______ to the computer every day. A. are sent B. send C. were send 5. Many problems ______ by creative ideas last year. A. solved B. were solved C. are solved (三) 动词适当形式填空（被动） 1. The telephone ______ (invent) in 1876. 2. Letters ______ (send) across the sea by radio long ago. 3. Houses ______ (can build) with 3D printers. 4. All ingredients ______ (mix) and boiled to make paper. 5. The Qinghai-Xizang Railway ______ (finish) in 2006. (四) 主动变被动 1. Bell invented the telephone. 2. People can make toys with 3D printers. 3. Cai Lun mixed bark to make paper. (五) 完成句子汉译英 1. 收音机在 19 世纪 90 年代被发明。 The radio ______ ______ in the 1890s. 2. 玩具可以由 3D 打印机制作。 Toys ______ ______ by 3D printers. 3. 消息能通过广播快速传播。 News ______ ______ quickly by radio. 4. 蔡伦的纸由树皮和旧布料制成。 Cai Lun’s paper ______ ______ bark and old clothes. 5. 这项发明带来了文化快速发展。 This invention ______ ______ rapid development of culture. (六) 书面表达 题目 The Great Invention — Papermaking 要求不少于 60 词，使用过去被动，介绍发明、制作过程、影响 参考范文 The Great Invention — Papermaking Papermaking is one of the greatest ancient Chinese inventions. It was invented by Cai Lun in Eastern Han Dynasty. Before that, people wrote on expensive materials like silk or bamboo. Cai Lun used tree bark and old clothes to make paper. All materials were mixed, boiled and beaten. Then the liquid was poured on bamboo screens. At last, light cheap paper was made. This invention spread to other countries. It led to fast development of culture all over the world. 学科网（北京）股份有限公司 $