Unit5 语法专项课件 2026-2027学年人教版九年级英语上册

该初中英语课件聚焦一般现在时和一般过去时被动语态，通过教材句子对比主动与被动语态结构，结合3D打印流程等语境观察练习引导学生发现规律，再归纳核心规则及主动变被动四步检查法，搭建从感知到应用的学习支架。 其亮点是以“Power of Ideas”单元主题为载体，通过描述发明、制造过程等情境任务培养语言能力，借助观察归纳、主动被动对比提升思维品质，提供分层练习与课后项目发展学习能力。例如“介绍发明的四句话”结构助力系统表达，口语写作任务强化语法应用，既帮助学生在真实语境中掌握语法，也为教师提供多样化教学资源提升效率。

Unit 5 Power of Ideas 语法专项课件 Passive voice in the simple present and past tenses 找承受者 · 变 be · 用分词 人教版九年级英语上册 学习目标与课堂任务 02 本课目标 1. 理解主动语态与被动语态的关注点差异。 2. 掌握一般现在时和一般过去时的被动语态。 3. 用被动语态描述发明、用途和制造过程。 课堂任务 观察教材语境，归纳规则，完成逐题练习，并进行真实表达。 语法导入：从教材句子发现结构 03 观察 A 观察 B 主动：强调执行者 Alexander Bell invented the telephone in 1876. 结构 主语 + 谓语 + 宾语 被动：强调承受者 The telephone was invented by Alexander Bell in 1876. 结构 承受者 + be + 过去分词 (+ by...) 单元主题：Power of Ideas 04 核心问题 What do creative ideas bring about? 发明影响 What changes can inventions bring to our lives? 实现过程 How do we turn ideas into reality? 表达任务 Describe inventions using the passive voice. 语境观察：先不背规则，先看结构 05 在横线上填入最合适的词或形式。 1. A mini-camera _____ connected to the glasses. is 2. The oil and salt _____ added by the machine itself. are 3. The first radio message ______ sent across the Atlantic in 1901. was 4. Many bridges _______ built above the frozen ground. were 5. Toys and chairs can _____ made by a 3D printer. be 6. The word “robot” ______ introduced in a play in 1920. was 核心规则①：一般现在时被动 06 结构 am / is / are + 过去分词 用途 描述现在的用途、事实、流程。 例句 Smart Cook is used to make dishes. 例句 Words can be turned into sound. 核心规则②：一般过去时被动 07 结构 was / were + 过去分词 用途 描述过去发生的发明、建造、发现。 例句 The telephone was invented in 1876. 例句 Many bridges were built over the frozen ground. 主动 / 被动：关注点对照 08 主动 被动 例 Bell invented the telephone. 关注 谁做了动作。 例 The telephone was invented by Bell. 关注 什么被做。 过去分词：被动语态的核心形式 09 规则变化 invent → invented；use → used；design → designed 常见不规则 make → made；build → built；send → sent；find → found 结构检查 be 的时态 + 过去分词，二者缺一不可。 提示 by + 执行者只有需要强调时才写。 主动变被动：四步检查 10 1. 找宾语 主动句宾语变成被动句主语。 2. 定 be 根据新主语和原句时态选择 is/are/was/were。 3. 变分词 原谓语动词改为过去分词。 4. 看执行者 必要时用 by + 原主语。 基础练习：把规则落到句子里 11 用最合适的词或形式完成句子。 1. The telephone ______ invented in 1876. was 2. Smart Cook _____ used to make many dishes. is 3. These glasses _____ designed for people with poor eyesight. are 4. The object ______ produced layer by layer yesterday. was 5. Many new tools _______ shown at the exhibition. were 6. Different materials can _____ used in 3D printing. be 规则梳理：一页看清核心 12 结构 例句 / 判断依据 现在：is/are done 过去：was/were done 情态：modal be done is used / are designed was invented / were built can be made / should be protected 易错辨析：be 与过去分词都要变对 13 主谓一致 The glasses are designed ... / The machine is designed ... 时态一致 was invented（过去）/ is used（现在） 情态结构 can be made，不是 can made。 检查 先圈 be，再圈过去分词。 什么时候更适合用被动语态？ 14 不知道执行者 The word “robot” was introduced in 1920. 执行者不重要 The object is produced layer by layer. 突出承受者 The telephone was invented by Bell. 文体 科技说明和新闻报道中被动语态很常见。 教材语境：3D 打印就是一条被动“流程链” 15 Step 1 The object is designed on a computer. Step 2 A file is created and sent. Step 3 The file is read by the printer. Step 4 The object is produced layer by layer. 情境练习①：教材人物与场景 16 根据语境完成句子。 1. First, the object _____ designed on a computer. is 2. Then a digital file _____ created. is 3. The file _____ sent to the 3D printer. is 4. Next, the file _____ read by the printer. is 5. Finally, the object _____ produced layer by layer. is 6. Other materials can _____ used as well. be 阅读语境：Cai Lun and Papermaking 17 材料 Different materials were used for writing. 实验 Ingredients were mixed and boiled. 成纸 The fibre was dried and pressed. 影响 Paper is used worldwide today. 情境练习②：从课本走向迁移 18 根据语境完成句子。 1. The Qinghai-Xizang Railway ______ completed in 2006. was 2. Creative ideas _______ needed to solve many problems. were 3. Special pipes _______ used to keep the ground hard. were 4. Tunnels had to _____ created in some places. be 5. Bridges _______ built so animals could pass below. were 6. The railway _____ used by many travellers today. is 迁移：介绍发明的四句话 19 What It is called ... When/Who It was invented by ... in ... How It is made / produced by ... Effect It is used to ... and has changed ... 基础练习：选择最佳答案 20 选择唯一最佳答案。 1.( A ) The telephone was ___ by Bell in 1876. A. invented B. invent C. inventing D. to invent 2.( B ) These glasses are ___ for poor eyesight. A. design B. designed C. designing D. to design 3.( C ) Many bridges were ___ during the project. A. build B. building C. built D. to build 4.( D ) Houses can be ___ by 3D printers. A. making B. to make C. make D. made 易错练习：补全正确结构 21 每句只填一个关键词或形式，读完整句子检查。 1. Paper _____ made from plant fibres. is 2. Many materials _______ used for writing in ancient China. were 3. Cai Lun’s paper ______ praised by the emperor. was 4. The ingredients _______ mixed and boiled in water. were 5. The fibre ______ dried and pressed to form paper. was 6. Paper products _____ used around the world today. are 主题词汇：把语法放回单元语境 22 发明设备 invention, camera, laptop, printer, wheel, telephone 制造材料 plastic, fibre, bark, bronze, liquid, paper 过程动词 design, create, send, produce, mix, boil, press 主题短语 be used for, be made of/from, result in, lead to, speed up 常用表达：词组进入句子 23 be used for 被用于…… be made of / from 由……制成 result in 造成；导致 lead to 导致；造成 speed up 使加速 结构积累：形成可调用的“语法词库” 24 一般现在时被动 am / is / are + 过去分词 一般过去时被动 was / were + 过去分词 情态动词被动 can / should / must + be + 过去分词 口语任务：用本单元语法真实表达 25 1 选发明 What invention do you like the most? 2 说用途 It is used for / to ... 3 说原理 It is made of/from ...；It is produced by ... 4 说影响 说明它怎样改变了人们的生活。 要求：至少准确使用2次本单元核心语法。 写作任务：从句型到短文 26 1 基本信息 发明名称、发明者、时间。 2 问题与过程 为什么发明、怎样解决问题。 3 被动表达 至少使用两句一般过去时/现在时被动语态。 4 影响 说明发明带来的改变。 写完后圈出目标结构，逐句检查语义与语法。 随堂检测：语境中的核心语法 27 选择唯一最佳答案。 1.( A ) Paper ___ from fibres. A. is made B. makes C. is making D. made 2.( B ) The first radio message ___ in 1901. A. is sent B. was sent C. sent D. was sending 3.( C ) Different materials ___ to write on in ancient China. A. used B. are using C. were used D. use 4.( D ) The oil and salt ___ by Smart Cook itself. A. adds B. added C. is added D. are added 随堂检测：句子补全 28 用最合适的词或形式完成句子。 1. Sticky notes _______ invented after an unexpected discovery. were 2. A weak glue ______ produced by Spencer Silver. was 3. Small paper notes _______ used by Arthur Fry. were 4. The idea ______ developed into sticky notes. was 5. Sticky notes _____ sold in many colours today. are 6. They can _____ removed easily without damage. be 课后项目：把语言用起来 29 1 发现问题 从健康、环保、农业、教育等领域选一个问题。 2 提出创意 设计一个便宜、易操作、对社会有益的发明。 3 制作海报 写名称、材料、用途和影响。 4 展示 用被动语态介绍“它怎样被制造/使用”。 项目展示时，准确性优先于“堆难句”。 专项巩固：单元主题再练一次 30 用最合适的词或形式完成句子。 1. The first plane flights _______ made in 1903. were 2. The plane ______ invented by the Wright brothers. was 3. Bird flight ______ studied to solve control problems. was 4. An engine ______ added to the glider later. was 5. Modern planes _____ used for fast travel worldwide. are 6. Long journeys can _____ completed in a few hours. be 综合讲评：规则 + 语境双检查 31 选择唯一最佳答案。 1.( B ) The object is ___ on a computer first. A. design B. designed C. designing D. to design 2.( A ) A file is ___ and sent to the printer. A. created B. creates C. creating D. create 3.( A ) The technique was ___ to other countries. A. spread B. spreads C. spreading D. to spread 4.( A ) New inventions can ___ our lives. A. change B. changed C. changing D. to change 课堂小结：用一个框架带走本单元 32 判断规则 典型例句 现在被动：am / is / are + done。 过去被动：was / were + done。 情态动词被动：modal + be + done。 Smart Cook is used to make dishes. The telephone was invented in 1876. Houses can be made by a 3D printer. 先看意义和结构，再决定语法形式。 $