Unit5语法专项课件- that which限制性定语从句2026-2027学年外研版英语九年级上册

该初中英语课件聚焦外研版九年级上册Unit5 that/which限制性定语从句，通过概念复习搭建基础，系统讲解关系代词用法、互换规则及谓语单复数，结合Unit4对比表构建知识支架，助力学生从基础到进阶掌握语法要点。 其亮点在于分层练习覆盖选词填空、句子合并等题型，易错点辨析与“合并句子四步法”“课堂解题口诀”结合，提升语言能力（准确运用关系代词）、思维品质（辨析特殊情况）和学习能力（掌握解题策略），帮助学生高效学习，教师教学更具针对性。

教学课件 外研英语九年级上册 Unit5 语法专项 —— that/which限制性定语从句 全解精讲+分层练习 1 1.回顾定语从句、先行词基础概念 2.掌握 which、that 修饰事物 / 动物的用法 3.分清 who/which/that 三者修饰对象区别 4.掌握从句谓语随先行词单复数变化规则 5.记住只能用 that 的四类特殊拓展场 学习目标 概念复习 先行词：被从句修饰的名词，本单元多为事物 关系代词：连接主句与从句，代指先行词 which/that 在从句中作主语，不可省略 例句拆分：The lake that is clean attracts tourists. 翻译：那片干净的湖泊吸引游客 which 用法讲解 which 仅指代事物、动物，绝对不能修饰人 在从句中充当主语，不可省略 例句：The wastes which pollute rivers are harmful. 主句：The wastes are harmful. 从句：which pollute rivers（修饰垃圾） that 用法讲解 that 既可修饰人，也可修饰事物、动物 本单元重点用 that 修饰各类自然事物 例句：Trees that absorb CO₂ protect our earth. 无特殊限制时，that 可替换 which/who that 与 which 互换规则 先行词单纯为事物、动物，二者可互换 原句：The hill which has trees is beautiful. 互换：The hill that has trees is beautiful. 互换前提：从句仅作普通描述，无特殊限定词 从句谓语单复数规则 动词单复数只看先行词，与 that/which 无关 先行词单数→动词变三单 The river that runs fast is clear. 先行词复数→动词用原形 Rivers that run fast are clear. 不可数名词作先行词，统一视作单数 拓展 1 :只能用 that，不能用 which 先行词同时包含人 + 物 例句：We talked about the animals and forests that we love 句内既有动物又有森林，只用 that 此场景不能替换为 which 拓展 2:只能用 that，不能用 which 先行词带最高级、序数词修饰 This is the most beautiful wetland that I’ve seen. the first park that we visited. 看到 best/first 等词，直接选用 that 拓展 3:只能用 that，不能用 which 先行词有 all、every、much 等限定词 All rubbish that we throw hurts nature. every tree that grows well matters. 限定词压缩名词范围，固定用 that 拓展 4: 只能用 that，不能用 which 先行词为不定代词 something/nothing Nothing that pollutes the sea should be left. something that protects wildlife. 不定代词作先行词，禁用 which Unit4&Unit5 关系代词对比表 代词 修饰对象 who 仅人 which 仅事物 / 动物 that 人、事物、动物 做题第一步：判断先行词是人还是物 是人优先 who/that；是物优先 which/that 易错点 1 which 修饰人混用 错误：The worker which protects birds is kind. 错误原因：worker 是人，不能用 which 改正：The worker who/that protects birds is kind. 看见人物先行词，直接排除 which 易错点 2 that/which 作主语省略 错误：The river is clean attracts tourists, 规则：作主语的关系代词不能删掉 改正：The river that/which is clean attracts tourists, 只有作宾语时才可省略（后续学习） 易错点 3 先行词与代词加逗号 错误：The tree, that grows tall, is old 限制性定语从句不加逗号隔开 逗号用于非限制性从句，本单元不考察 书写时紧贴先行词，无标点 易错点 4 主谓匹配混乱 错误：The lake that look clean attracts us. 先行词 the lake 单数，look 变 looks 错误：Trees that absorbs CO₂ are useful. 先行词 trees 复数，absorb 用原形 口诀：看名词，不看 that/which 例句 1（单数事物） This is a wetland that protects wild birds. 先行词 wetland 单数，that 后动词三单 protects 例句 2（复数事物） The plastic bags that pollute oceans are harmful. 先行词 bags 复数，that 后动词原形 pollute 合并句子解题四步法 找出两句重复事物名词（先行词） 判断是人 / 物，物选用 that/which 删掉第二句 it/they，替换为关系词 根据先行词单复数变换从句动词 无逗号，紧跟先行词 合并句子示范例题 原句：This is a forest. It shelters animals. 重复名词 forest（事物），it 替换 that/which 合并：This is a forest that/which shelters animals. 先行词单数，shelter 变三单 时态前后保持一致 题型一 选词填空 1.The mountain _________ has rare plants is famous. (that/who) 2.Animals ____________ live in forests need clean water. (which/who) 3.The scientist _________ studies wildlife is young. (who/which) 4.Waste _____________ factories make pollutes rivers. (that/who) that which/that who/that that/which 5.Flowers _________ grow by the lake look bright. (which/who) 6.Everyone _________ loves nature joins our activity. (who/that) 7. Factories _____________ cut down trees must be controlled. (which/who) which/that who/that which/that 题型二 句子合并 This is a lake. It provides fresh water. Glass bottles are rubbish. They can be recycled. The hill is a park. It protects small animals. This is a lake that/which provides fresh water. Glass bottles are rubbish that/which can be recycled. The hill that/which protects small animals is a park. 题型二 句子合并 This is a rule. It limits plastic use. The stream runs through town. It was clear years ago. Wind power is energy. It creates no pollution. This is a rule that/which limits plastic use. The stream that/which was clear years ago runs through town. Wind power is energy that/which creates no pollution. 题型三 匹配连线 I read a book a. that cut down too many trees Ocean animals b. which tells us environmental knowledge The harmful garbage c. which live in coral reefs are dying Strict laws d. that pollute underground water Tropical rainforest e. that stop waste dumping work well Those factories f. which holds thousands of wildlife b c d e f a 题型四 句子改错 The grass who grows green feeds sheep The stream which are full of fish is clear Farmers which plant trees protect soil who→that/which are→is which→who/that 题型四 句子改错 The waste that pollute the lake is dangerous A plant who grows in deserts is cactus The reserve which protect pandas opens daily pollute→pollutes who→that/which protect→protects 单元核心知识点复盘 who 指人，which 仅指物，that 人 / 物通用 that/which 作主语，绝对不能省略 从句动词单复数由先行词决定 四类特殊场景只能使用 that，不用 which 限制性定语从句不加逗号分隔 易混知识点总结 先行是人不用 which，先行是物不用 who 无特殊限定词，that/which 可互换 最高级、人 + 物、不定代词只用 that 单数名词动词三单，复数名词用原形 关系词作主语不可省略，书写无逗号 课堂解题口诀 先行是人用 who，事物 which/that； 主语代词不能丢，单复数看前头； 最高混合不定代，一律只用 that； 限制性无逗号，环保句型常留。 教学课件 Unit5 语法专项 —— that/which限制性定语从句 Thank you for listening! 30 $