Unit4 The Wonders of Nature Grammar Focus (课件)-2025-2026学年八年级英语下册（人教版）

UNIT 4 The Wonders of Nature Grammar Focus f 八年级英语下册（人教版2024） Learning objectives 学习目标 1. 复习并巩固形容词和副词最高级的概念、变形法则（规则与不规则 变化）及常见句型。（学习理解） 2. 通过任务挑战的方式，结合地理之最，归纳总结最高级的基本用法 及高频考点。（应用实践） 3. 学会运用该语法结构描述家乡的自然景观。懂得要热爱自然、保护 自然、敬畏自然。（迁移创新） Start 概念理解 Task1 变形法则 Task2 句型公式 Task3 牛刀小试 Task4 Challenging task How many rivers are mentioned? What are they? Lead-in Yellow River Yangtze River Nile River Let's compare longest 5,464 km Yellow River 6,300 km Yangtze River 6,671 km Nile River longer The Nile River is the longest of the three. long Which one is the longest? Let's learn 形容词和副词的最高级 英语中形容词和副词有三个等级，即 ________，________和________。 原级 比较级 最高级 原级：as...as...“和......一样”否定：not as/so...as...“不如......” 比较级：两者间比较，表示“较/更……”；标志词：than 概念理解 Task1 最高级：____者或____者以上的比较，表示___________。 后面常用in/of等短语来说明比较的范围。 三 三 “最……” Read the sentences. Circle the superlatives (最高级). 1.What is the biggest desert in the world? 2.Where is the deepest point in the ocean? 3.The Dead Sea is the lowest place on earth. 4.Mount Qomolangma is the highest mountain in the world. 5.The Yangtze River travels the farthest in China. 形容词和副词最高级的构成 Group work 一、规则变化 1. 一般在词尾加________。 -est 2. 以字母e结尾的词加_______。 -st 3. 重读闭音节词尾只有一个辅音字母, ______该辅音字母，再加_______。 双写 -est 4. 以__________+y结尾的双音节词， 改y为____再加_____。 5._______和部分双音节词， 词前加 _______。 多音节 most 辅音字母 原级→比较级→最高级 1.fast→faster→__________ 2.large→larger→_________ 3.big→bigger→__________ 4.heavy→heavier→_______ 5.famous→more famous→___________ fastest largest biggest most famous -est i 记忆口诀：直去双改加 变形法则 Task2 heaviest 原级 比较级 最高级 good/well better bad/badly worse many/much more little less old older/elder far farther/further 二、不规则变化 best worst most least oldest / eldest 表年龄 表长幼 farthest / furthest 表距离 表程度 两多两好两不好 many/much good/well bad/badly 一老一远加一少 old far little 记忆口诀 最高级常见句型 基本结构：the +最高级 + in/of... “......中最......” 例1 Qinghai Lake is the largest saltwater lake in China. 形容词最高级前常有the The Yangtze River travels (the) farthest in China. 例2 副词最高级前the可省 The Mariana Trench is the________ (deep) point in the ocean. 练 deepest 句型公式 Task3 one of the +形容词最高级 + 复数名词“最……的……之一” 高频考点 The Great Barrier Reef is one of the______________(beautiful) places to visit. 练 Mount Qomolangma is one of the greatest wonders of the world. 例 最伟大的奇观之一 most beautiful the +序数词(first除外)+形容词最高级+单数名词“第几最……的” The Yellow River is the second longest river in China. 例 The Yangtze River is _________ (three) longest river in the world. 练 第二长河 the third Which / Who...+the+最高级, A, B or C? “哪一个/谁最……，A、B还是C?” Which mountain is the highest , Mount Tai, Mount Huang or Mount Hua? 例 Who climbed ____________(fast), Tom, Peter or Mike? 练 (the) fastest Exercise Complete the passage with the correct forms of the words in the box. （限时5分钟） metre take amazing why in Yueyan is one of the____________ natural wonders in my hometown. It’s located_______Dao County, Hunan Province. _______do people call it Yueyan? Because it looks like a bright moon. In fact, it is a special cave(洞穴). The cave is about 200 _______ long. Here, you can hike with your family and friends. You can also_______ beautiful photos. For people who love the moon, Yueyan is the best place to visit! most amazing in take metres Why The world is big but our home is small. Protect nature and protect our home! 牛刀小试 Task4 Finish I can Stars 复习并巩固形容词和副词的最高级的用法 了解地理之最，能使用形容词和副词的最高级描述自然景观，对大自然的神奇产生热爱与敬畏。 Summary 形容词和副词的最高级 概念 变形 用法 规则变化（直去双改加）； 不规则变化 （两多两好两不好，一老一远加一少） 三者或三者以上的人或事物相比较 表示“最......” 1. the+最高级+in/of... 2. one of the+形容词最高级+复数名词+in/of... 3. the+序数词(除first)+形容词最高级+单数名词+in/of... 4. Which/Who...+the+最高级, A, B or C? Thanks for listening! $