Unit2语法专项课件- 后缀-en构词法 & 基础被动语态2026-2027学年仁爱科普版英语九年级上册

该初中英语课件聚焦九年级上册Unit2语法专项，系统讲解后缀-en构词法（形容词/名词→动词、名词→形容词两类规则）与基础被动语态（一般现在、一般过去时结构），通过分类导入建立知识框架，以规则详解、词汇汇总、例句精讲为支架，帮助学生构建语法知识脉络。 其亮点在于融合语言能力与思维品质培养，采用“规则+口诀+分层练习”模式，如-en构词记忆口诀“形变动表变化，名变形表材质”、被动转换口诀“宾变主、谓变分、主加by”，搭配词形填空、句型转换等针对性练习，强化知识应用。易错点与小结分点梳理，助力学生夯实语法基础，教师可直接用于课堂教学，提升教学效率。

教学课件 仁爱英语九年级上册 Unit2 语法专项 ——后缀-en构词法 & 基础被动语态 全解精讲+分层练习 1 1. 掌握后缀-en两种词性转换核心规则 2. 熟记-en高频单词、词义及用法场景 3. 掌握一般现在、一般过去时被动语态结构 4. 熟练进行主动、被动语态互换 学习目标 模块一 后缀-en构词法 导入 分为两大核心用法，考试必考两类变形 用法一：形容词/名词 → 动词（使……） 用法二：名词 → 形容词（由……制成的） 可实现词义延伸，丰富写作句式 -en构词规则详解1（动词类） 形容词 + en = 动词，含义：使变得…… short(短的)→shorten(缩短)、wide(宽的)→widen(拓宽) dark(暗的)→darken(变暗)、bright(亮的)→brighten(照亮) 前缀en-也可构成动词：rich→enrich(丰富) 多用于描述状态、尺寸、光线的改变 -en构词规则详解2（形容词类） 名词 + en = 形容词，表材质：由……制成的 wood(木头)→wooden(木制的) wool(羊毛)→woolen(羊毛的) 此类形容词只能修饰物品，描述材质属性 无动词含义，是完形、单选高频考点 -en核心词汇汇总表 原词&词性 变形词&词性 释义 wood n.木头 wooden adj.木制的 木质的 short adj.短的 shorten v.缩短 使变短 wide adj.宽的 widen v.拓宽 使变宽 rich adj.富足的 enrich v.丰富 使充实 -en拓展词汇+记忆技巧 dark adj.黑暗→darken v.（使）变暗 bright adj.明亮→brighten v.照亮、变亮 broad adj.宽广→broaden v.拓宽（眼界） wool n.羊毛→woolen adj.羊毛制的 记忆口诀：形变动表变化，名变形表材质 -en例句精讲1 1. We use wooden bowls in daily life. 译：我们日常生活中使用木碗。（材质形容词） 2. Reading broadens our horizons greatly. 译：阅读极大地拓宽我们的眼界。（动词用法） 3. Clouds darkened the sky in the afternoon. 译：下午乌云让天色逐渐变暗。（状态变化） -en例句精讲2 1. We can shorten the time of study by good methods. 译：用好的学习方法可以缩短学习时间。 2. Travel can enrich our life experience. 译：旅行可以丰富我们的人生阅历。 3. Lights brighten the street at night. 译：夜晚灯光照亮了整条街道。 -en专项练习1 词形填空 用所给词加-en变形，填写正确形式 1. People use ______________ (wood) tables in the village. 2. We need to ______________ (short) our study plan. 3. Knowledge can ______________ (wide) your thinking. 4. Heavy rain will ______________ (dark) the sky quickly. 5. Books ______________ (rich) our spiritual world. wooden shorten widen darken enrich -en专项练习2 同义句转换 1. The tool can make the stick sharp. The tool can ______________ the stick. 2. The sun makes the room bright every morning. The sun ______________ the room every morning. 3. This scarf is made of wool. This is a ______________ scarf. sharpen brightens woolen -en专项练习3 单句改错 划出错误单词，写出正确-en变形形式 1. We have many wood furniture at home. 2. We should wide our knowledge all the time. 3. The storm dark the whole city last night. 4. Reading can rich our boring daily life. wood→wooden wide→widen dark→darkened rich→enrich 模块二 被动语态 导入 英语分主动语态、被动语态两种句式 主动：强调动作发出者，谁做动作 被动：强调动作承受者，谁被做动作 本单元掌握两大核心：现在、过去被动 被动语态核心标志：be + 动词过去分词 一般现在时被动语态 结构 公式：主语 + am/is/are + 过去分词(done) I 搭配 am；单数/不可数名词搭配 is you/复数名词，统一搭配 are 用法：描述客观事实、经常性发生的动作 例句：Trees are planted every spring. 一般过去时被动语态 结构 公式：主语 + was/were + 过去分词(done) 单数主语、I 搭配 was 复数主语、you 统一搭配 were 用法：描述过去某时发生的被动动作 例句：The bike was repaired yesterday. 主动变被动 转换步骤 第一步：主动宾语变被动主语 第二步：根据时态、单复数加be动词 第三步：谓语动词变为过去分词 第四步：主动主语前加by（可省略） 口诀：宾变主、谓变分、主加by 被动语态核心例句精讲 1. Many rules are made to protect students.（现被） 译：许多规则被制定来保护学生。 2. This bridge was built ten years ago.（过被） 译：这座桥是十年前修建的。 3. Flowers are watered every day. 被动语态易错知识点1 不及物动词无被动语态：appear、happen 时态判断：every day→现被；ago/in→过被 be动词单复数由新主语决定 过去分词固定变形，不可随意更改 by后接动作执行者，常省略不写 被动语态基础练习1 时态填空 1. English ________________ (speak) widely all over the world. 2. Many toys ________________ (make) in this factory every year. 3. The phone ________________ (use) by people in 1990s. 4. These stories ________________ (tell) by teachers yesterday. is spoken are made was used were told 被动语态练习2 短文填空 Paper (1) ________________ (invent) by Cai Lun long ago. It (2) ________________ (use) for writing now. Many books (3) ________________ (print) every year. They (4) ________________ (send) to schools last month. was invented is used are printed were sent 被动语态单选 1. The new park ______ last year. A. builds B. built C. is built D. was built 2. Many songs ______ on the Internet every day. A. share B. are shared C. shared D. were shared 3. —When ______ this bike ______? —It was made in 2020. A. is; made B. was; made C. did; make D. does; make 4. Rice ______ in the south of China every year. A. grows B. grew C. is grown D. was grown D B B C 被动语态句型转换1（变被动） 将主动句改为对应时态被动句 1. Workers build many new roads every year. 2. People invented many useful tools long ago. 3. Teachers give us much knowledge. Many new roads are built by workers every year. Many useful tools were invented by people long ago. Much knowledge is given to us by teachers. 被动语态句型转换2（变主动） 将被动句改为主动句，指定主语 1. The cake was made by my sister.（主语My sister） 2. Trees are planted by students every spring.（主语Students） 3. The letter was written by him yesterday.（主语He） My sister made the cake. Students plant trees every spring. He wrote the letter yesterday. 被动语态单句改错 1. Many houses is built in our town every year. 2. The car were repaired last week. 3. Books are read by us yesterday. 4. The bridge was build ten years ago. is→are were→was are→were build→built 被动语态汉译英 1. 每年很多树木被种植在山上。 2. 这座古老的建筑建于百年之前。 3. 智能手机现在被广泛使用。 4. 许多新规则去年被制定出来。 Many trees are planted on the mountains every year. This old building was built a hundred years ago. Smart phones are widely used now. Many new rules were made last year. -en构词法 易错点总结 1. 修饰名词用en形容词（wooden） 2. 表状态变化用en动词（shorten） 3. 情态动词、to后接动词原形 4. 主语三单，en动词要变三单形式 5. 区分en动词和en形容词词性 被动语态 易错点总结 1. 现被：am/is/are+分词；过被：was/were+分词 2. 时态看时间标志，单复数看新主语 3. appear/happen 无被动语态 4. 主动变被动，动词必须变过去分词 5. 否定疑问均在be动词上变化 本节课知识点小结1（构词法） 1. 名词+en→材质形容词（wooden/woolen） 2. 形容词+en→变化类动词（widen等） 3. 掌握8组核心高频变形单词 4. 会用于填空、改写、写作句型 本节课知识点小结2（被动语态） 1. 两大核心：一般现在、一般过去被动 2. 熟记被动语态基础公式 3. 熟练主动被动句型互换 4. 掌握时态判断、单复数用法 重难点复盘 重点：en词性转换、两种被动句式结构 难点：主动被动互换、时态精准判断 易错点：be动词单复数、分词变形错误 解题技巧：先判词性、再定时态 课堂总结 1. 完全掌握-en两类构词规则与词汇 2. 吃透两种基础时态被动语态用法 3. 熟练应对各类语法基础题型 4. 规避高频易错点，夯实单元语法 教学课件 Unit2 语法专项 ——后缀-en构词法 & 基础被动语态 Thank you for listening! 32 $