Unit 4 Section A Grammar Focus 4a-4d 课件 2025-2026学年人教版英语八年级下册

Unit Four The Wonders of Nature Sec A Grammar Focus 4a-4d How do we connect with nature? Learning Objectives 语言能力 Identify comparatives /superlatives in reading; read/write large numbers; use regular forms to compare natural places; complete passage with correct forms. 学习能力 Summarize 5 formation rules; infer new words from context; practice comparison Q&A with partners. 文化品格 Learn global & Chinese natural wonders; appreciate nature & build environmental awareness. 思维品质 Analyze natural features with comparatives /superlatives; distinguish & apply comparatives (2 things) & superlatives (3+ things). 目录 CONTENTS 01 Warm up 05 Production 02 Lead in 06 Summary 03 Presentation 07 Exercise 04 Practice 08 Homework 01 Warm up Warm up:形容词炸弹 学生挨个进行形容词接龙,若说到的词和老师事先准备的词一样,则被“炸到” Listen and fill the chat. Oh oh Grass gets _ Days gets _ Sun gets _ _ and _ Dreams gets _ Smiles gets _ Love gets _ _ and _ greener warmer brighter Brighter brighter bigger wider stronger Stronger stronger 02 Lead in Let`s watch! the Yangtze River (6300km) the Yellow River (5464km) the Nile River (6670km) The Yangtze River is longer than the Yellow River. The Nile River is longer than the Yangtze River. The Nile River is the longest. the Sahara Desert (906 km ) the Taklamakan Desert (33 km ) the Arabian Desert (233 km ) The Sahara Desert is larger than the Taklamakan Desert. The Arabian Desert is larger than the Sahara Desert. The Arabian Desert is the largest. 03 Presentation 4a Read the sentences. Circle the adjectives which compare things. Underline the adverbs which compare actions.. 语法关卡一: 形容词/副词三个等级 原级:large 比较级:larger 最高级:largest 原级:形容词本来的样子,不比较 比较级:比较两个事物,“A比B更...” 最高级:三个或多个事物对比,“最...” 语法关卡二:形容词/副词原级用法 as ... as 基本结构: A+be+as+原级+as+B “ A和B一样” eg: He is as tall as me. 否定结构: A+be+not so/as+原级+as+B “ A和B不一样” 语法关卡三:形容词/副词比较级用法 主语+be动词+adj.比较级+than +比较对象 eg: She is more outgoing than me. Her shoes is bigger than mine. 主语+实义动词+adv.比较级+than +比较对象 eg: He studies harder than his classmates. ① 比较级+than 语法小技巧: than 前比较级,than后用宾格 注意:形物代+名词作主语时,than 后对象要统一。 15 语法关卡三:形容词/副词比较级用法 eg: The higher you climb, the faster you will see. ② the + 比较级..., the + 比较级... “越...,就越...” eg: The weather is getting colder and colder. ③ 比较级 + and + 比较级 “越来越... ” 16 语法关卡三:形容词/副词比较级用法 eg: Tom is the taller of the two. ④ the + 比较级 + of the two “两者中比较...的” eg: Which is more delicious, pizza or hamburger? Who is taller, Tom or Jack? ⑤ Which /Who ...+比较级, A or B? “A和B哪个/谁更...” 17 语法关卡三:形容词/副词比较级用法 ⑥ 比较级+than any other +可数名词单数 = 比较级+than the other + 可数名词复数 “比其他任何/所有...都... ” eg: Shanghai is bigger than any other city in China. This book is more popular than the other books in the library. 18 可修饰比较级的词: 两多:_ 两少:_ 一甚至:_ 一远去:_ 温馨提示: He is much more serious than his sister. She runs a lot faster than me. much; a lot a little; a bit even far 两多两少一甚至,还有一个远去了 ① 主语+ be + the + adj.最高级+ in/ of/ among 短语 “...是...中最...的” eg: The Yangtze River is the longest river in China. ② 主语+ 实义动词 (+ the)+adv.最高级+ in/ of/ among 短语 “在...中最...的” eg: He runs (the) faster in our class. 语法关卡四: 形容词/副词最高级用法 20 ③ 主语+ be + one of the + adj.最高级+ 可数名词复数 + in/of 短语 “...是...中最...的之一” eg: China is one of the oldest countries in the wold. ④ 主语+ be + the + 序数词 +adj.最高级+ 可数名词单数+in/ of 短语 “...在...中是第几的...” eg: The Nile is the longest river in the world. 语法关卡四: 形容词/副词最高级用法 21 ⑤ 疑问词+ be + the + adj.最高级,A、B or C ? eg:Who is the most outgoing, Lisa、Jack or Mike? ⑥ 疑问词+ 助动词 + 主语+动词原形 (+ the) + adv.最高级,A、B or C ? eg: Which subject do you like best, English、maths or Chinese? 语法关卡四: 形容词/副词最高级用法 22 使用最高级时,前一般要加the; 但当最高级前有物主代词、指示代词、名词所有格等修饰时,则不加the. 温馨提示: Can you change? small cold heavy 以 big-bigger-biggest形式 进行快速抢答 comfortable high close large long creative funny fat 语法关卡五:形容词/副词比较级与最高级变化规则 ① +er/est ② +r/st (哑e结尾) ③ 变y为i+er/est (以辅+y结尾) ④ 双写尾字母+er/est (以重读闭音节词尾只有一个辅音字母时) ③ 词前+more/most (所有多音节和部分双音节词) 原级 比较级 最高级 good(好的);well(好地) better best bad(糟糕的);badly(糟糕地) ill(生病的) worse worst many;much (许多的) more most little (很少的) less least far(远的) farther farthest further(强调程度) furthest old(老的) elder (强调长幼) eldest older oldest 不规则变化: 记忆口诀: 两多两好三不好;一老一远加一少 04 Practice 4c Complete the passage with the correct forms of the words in the box. large amazing far close loud My friends and I visited Victoria Falls in Africa last year. Visiting one of the world’s _ waterfalls was a magical experience. As we went _ to the falls, the noise of the water slowly grew _ and louder. Then, right before our eyes, the waterfall appeared. It went on for as _ as the eye could see. Later, we sat in a special pool at the top of the falls. There, we felt the water rush past us and become a part of the waterfall. It was the scariest but also the _ experience of our trip! largest closer louder far most amazing 维多利亚瀑布 Watch the video and check your answers. 4c 1.Mount Kilimanjaro is _ (five thousand, eight hundred and ninety-five) metres high. 2._ (twenty-five thousand, seven hundred and sixty-eight) cubic metres of water pours down Inga Falls each second. 3.The East African Rift Valley is about 4,000 (_) miles long. 4.The Taklimakan Desert has a total area of about 337,000 (_) square kilometres. Write or spell out the numbers. 4b 较大数字的表达与读法 1, 034, 507, 890. 12 1,从数字的右端向左数,每三位数加一个逗号。 2,从右到左 第一个逗号,读作thousand; 第二个逗号,读作million 第三个逗号,读作billion. 英语中没有万和十万的表达 一万:ten thousand 十万:one hundred thousand point thousand million billion 3, 通常在hundred后加and,若百位数为0,则在thousand后加and and and one two 4,小数点后面的数字一个一个读 长、宽、高、深、面积的表达方式 01 02 03 基数词+单位词+形容词(long,wide,high,deep等) eg: The river is 20 meters wide. 基数词+单位词+in+名词(length, width, height,depth, size等) eg:The river is 20 meters in width. 拓展:作定语时,用合成词“ 数词-单位词单数-形容词 ” eg: This 20-meter-long rope isn`t enough to help climb the mountain. 1.Mount Kilimanjaro is _ (five thousand, eight hundred and ninety-five) metres high. 2._ (twenty-five thousand, seven hundred and sixty-eight) cubic metres of water pours down Inga Falls each second. 3.The East African Rift Valley is about 4,000 (_) miles long. 4.The Taklimakan Desert has a total area of about 337,000 (_) square kilometres. Write or spell out the numbers. 4b 5,895 25,768 three hundred and thirty-seven thousand four thousand 乞力马扎罗山 英加瀑布 东非大裂谷 塔克拉玛干沙漠 立方米 英里 05 Production 4d Write some questions to compare places. Then ask a partner your questions. •What is the highest ...? •Which park is bigger, ... or ...? ... Let`s watch! Nowadays, city walk is a super popular way to explore a city. Today, you are city tour guides! You need to design the best city walk route for our class! 每队根据任务卡上提供的信息,进行问答对话练习,并设计一份City Walk 路线 每组派1位推荐官上台,对本组做的北京City Walk路线做汇报 北京 City Walk 06 Summary 形容词和副词的比较级与最高级 较大数字的表达 as+ 原级+ as 原级的用法 比较级的用法 最高级的用法 1. 比较级+than 2. the + 比较级, the + 比较级 3. 比较级 + and + 比较级 4. the + 比较级 + of the two 5. Which /Who ...+比较级, A or B? 6.比较级+than any/the other +名词 1. (the +) 最高级 + in/of/among短语 2. one of the + 形容词最高级 + 可数名词复数 + in/of短语 3. “Which/Who...(+the)+最高级, A, B or C?” 4. the + 序数词 + 形容词最高级 + 可数名词单数 + in/of短语 Summary 规则变化&不规则变化 比较级和最高级的构成 07 Exercise 用所给词的适当形式填空。 1. The Yellow River is the second _ (long) river in China. 2. The glass bridge is _ (long) than any other one in China. 3. Who is _(outgoing), Tom or Jerry? 4. She studies _(carefully) than any other student in Grade 8. 5. - How are you feeling today? -Much _(well), thank you. 6. It`s one of _(popular) songs this year. 7. The more we talk, the _(close) our friendship will be. 8. The students read the instructions as _(careful) as they could to avoid mistakes. longest longer more outgoing more carefully better the most popular closer carefully 单项选择 1. AI technology in China has developed _ than anyone expected. A. fast B. faster C. the faster D. fastest 2. Qipao is one of _ troditional clothes in China, loved by people at home and abroad. A. famous B. more famous C. most famous D. the most famous 3. Among all the subjects, I think math is _ one. I always get good grades in it. A. easy B. easier C. easiest D. the easiest B D D 单项选择 4. To keep healthy, we should eat _ fast food and do _ exercise. A. less;more B. fewer;more C. more;less D. fewer;less 5. -“Food safety” problem is becoming _ these days. -I think so. The govement must do something to deal with it. A. smaller and smaller B. better and better C.nicer and nicer D. worse and worse A D 单项选择 6. For me, the West Lake is _ than any other lake in Hangzhou. Its clear water and willow trees make it wonderful place to visit. A. less attractive B. more attractive C. the most attractive D. attractive B 08 Homework 题目:My Favorite Place in China 要求: • 介绍一个你最喜欢的中国景点(如黄山、西湖、长城等) • 至少使用3个形容词/副词的比较级或最高级 • 参考句型:...is one of the most... in China. / It is more... than any other... / The... you visit, the... you will feel. 01 小作文写作 02 口语打卡 Must-do 录制1分钟语音 用英语介绍你最喜欢的动物/运动/科目,至 少使用3个比较级/最高级,例如: My favorite animal is the panda. It is one of the cutest animals in the world. It is more lovely than many other animals. Choose-to-do 1. 制作一张A4海报,主题为 My Family's Superlatives 2. 至少包含5个最高级句子,3个比较级句子,例如: My dad is the tallest in my family. My mom cooks more deliciously than my dad. My little sister is the cutest member of our family. 3. 搭配家庭照片/手绘插图,下节课展示分享 亲子互动:让孩子采访家人,用英语完成海报,家长帮忙纠正语法 考句型:...is one of the most... in China. / It is more... than any other... / The... you visit, the... you will feel. 01 【家庭之最】英语海报 Choose-to-do 1. 2-3人一组(或亲子合作),拍摄1分钟英语小剧场 2. 剧情围绕「比较」展开,例如: 比较两个玩具/两个零食/两个动画片 用A is more ... than B Which is ...?等句型对话 3. 要求至少使用5个比较级/最高级,台词清晰,下节课播放 创意方向:可以做「美食测评」「玩具开箱」「景点推荐」等主题 02 【比较级小剧场】短视频 $