Unit 4 课时3 Section A 4a-4d Grammar focus（教学课件）英语新教材鲁教版八年级上册

Unit 4 The Wonders of Nature Section A Grammar focus 4a-4d 课型：语法课 主讲人：XXX 通过听读例句、分析结构等方式，获取并正确认读形容词和副词比较级、最高级的构成规则（规则变化、不规则变化）及核心用法相关词汇与句式（如bigger, the biggest, more amazing等），感知比较级与最高级的语法特征；（学习理解） 01 通过完成句式填空、改写句子、编写比较类问题等练习，获取比较级与最高级在描述事物特征、动作程度时的关键用法，归纳并内化“比较级+than”“one of the+最高级+可数名词复数”等常用表达；（应用实践） 02 通过讨论、问答互动等活动，理解比较级与最高级在实际交际中描述事物差异、进行对比的意义，能够主动运用该语法结构描述身边的人或事物，并认同准确运用比较句式能让表达更丰富的语言理念。 （迁移创新） 03 学习目标 01 Lead in Let’s enjoy some natural wonders of the world. Lead in 形容词与副词的比较级和最高级 02 4a Read the sentences. Circle the adjectives which compare things. Underline the adverbs which compare actions.. the Yangtze River 长江 6300 km the Amazon River 亚马逊河 6440 km the Nile 尼罗河 6670 km long longer longest The Amazon River is longer than the Yangtze River. The Nile is longer than the Amazon River. The Nile is the longest of all. 概念理解 比较级：_____者比较。 最高级：_____者或_____者以上比较。 两 三 三 Presentation 1.比较级和最高级的基本概念 概念：用来修饰名词的形容词或者修饰动词的副词，会因为修饰程度不同而有所“比较”，可分为原级，比较级（更......）与最高级（最......）。 Presentation 2.比较级和最高级的构成 long longer longest 1. 一般在词尾加-er，-est。 2. 以不发音的e结尾加-r，-st。 3. 以重读闭音节结尾， 双写尾字母，再加-er，-est。 4. 以辅音字母加y结尾的， 变y为i再加-er，-est。 5.多音节和部分双音节词， 词前加 more， most。 nice nicer nicest big bigger biggest heavy heavier heaviest famous more famous most famous river scenery lake snow mountain 规则变化 Presentation 2.比较级和最高级的构成 原级 比较级 最高级 good / well many / much bad / badly little (少) old far 不规则变化 better best more most worse worst less least older/elder oldest/eldest farther/further farthest/furthest Practice 1.big __________ _________ 2. high __________ __________ 3. low __________ __________ 4. deep __________ __________ 5. easy __________ __________ 6. far __________ __________ 7. happy __________ _______ 8. loud __________ __________ 9. great __________ __________ 10. close __________ __________ 11. amazing_______________ ________________ 12. interesting______________ ________________ 13. well __________ __________ 14. little __________ __________ 写出下列单词的比较级和最高级 bigger biggest higher highest lower lowest deeper deepest easier easiest farther farthest happier happiest louder loudest greater greatest closer closest more amazing most amazing more interesting most interesting better best less least Presentation 3.比较级的用法 形容词或副词的比较级+than The Changjiang River is longer than it.长江比它长。 Bill runs faster than any other boy in his class.比尔跑得比班上其他任何男孩都快。 “比较级+and+比较级(单音节词和部分双音节词)”或“more and more+原级(多音节词和部分双音节词)”表示“越来越……”。 Summer is coming. It's getting hotter and hotter.夏天就要来了。天越来越热了。 “the +比较级...，the+比较级..”表示“越……,就越……”。 The more you read, the more you know.你阅读得越多,知道的就越多。 Presentation 3.比较级的用法 the + 比较级 + of the two (+ 名词复数) 表示“两者中较……的那个”。 Mike is the taller of the two boys. 迈克是两个男孩中较高的那个。 Which/Who... + 比较级, A or B? 表示“ A和B哪个/谁更……？” Which city is larger, Beijing or Shanghai? 北京和上海，哪个城市更大？ A + be + 倍数 + 形容词比较级 + than + B 表示“A是B的……倍……”。 Our school is three times bigger than yours. 我们学校是你们学校的三倍大。 Presentation 4.最高级的用法 (the+)最高级(+名词)+in/of 短语， 意为“……中最……的”。 I think spring is the best time of a year. 我认为春天是一年中最好的时节。 Tom works (the) hardest in Class3. 在三班汤姆学习最努力。。 one of the +形容词最高级+可数名词复数+in/of 短语，意为“……中最……的……之一”。 Hangzhou is one of the most beautiful cities in the world. 杭州是世界上最美的城市之一。 the +序数词+形容词最高级+可数名词单数+in/of 短语, 意为“在…中是第几……的……” As we all know, the Yellow River is the second longest river in China. 众所周知,黄河是中国第二长河。 “Which/Who...(the+)最高级，A,B or C?” 意为“哪个/谁是最......,A,B还是C？”。 Who sings best in your class, Lily, Tom or Jack? 你们班谁唱得最好，莉莉，汤姆还是杰克？ Practice 用所给词的适当形式填空 1.The Yellow River is _________ (long) than the Huaihe River. 2.Mount Tai is the _________ (high) of the two mountains in Shandong. 3.The sea is getting more and more _________ (beautiful) with environmental protection. 4.This lake is the _________ (deep) in our province. 5.Which is _________ (long), the Amazon River or the Nile River? 6.This river is three metres __________ (wide) than that one. 7.Hainan Island is the second __________(large) island in China. 8.The sunset over the ocean is one of the _______________ (amazing) sceneries in the world. longer higher beautiful deepest longer wider largest most amazing Practice 1.—Which is ______ natural wonder in the world, the Grand Canyon, the Sahara Desert or the Great Barrier Reef? —I think the Grand Canyon is. A. great B. greater C. the greatest D. more great 2.The Yangtze River is one of ______ rivers in the world. A. long B. longer C. the longest D. most long 3.The forest is becoming ______ because more trees are planted every year. A. greener and greener B. green and green C. more and more green D. greenest 4.This waterfall is ______ of the three in this area. A. the most beautiful B. more beautiful C. beautifuler D. beautifulest 单项选择 C C A A Production 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 n.池塘 ......远至（某处） Production 4d Write some questions to compare places. Then ask a partner your questions. •What is the highest ...? •Which park is bigger, ... or ...? •Is ... longer than ...? You can ask for help: 较大数字的表达与读法 03 Presentation thousand million 1.从数字的右端向左数，每三位数加一个逗号。 2.从右向左，第一个逗号处读thousand（千），第二个逗号处读million（百万），第三个逗号处读billion（十亿）。 3.读数时，通常在hundred后加and；若百位数为0，则在thousand后加and。 4.英语中无直接表示“万”和“亿”的单位词，需用thousand和million表达，如“一万”是ten thousand、“一亿”是one hundred million。 较大数字的表达与读法 9，365,278,689 billion Practice 写出或读出下列数字。 2,674 → ______________________________________________ 164,213,430 → ________________________________________ _________________________________________ 18,357,089 → _________________________________________ __________________________________________ twenty-eight thousand, six hundred and fifty-six ___________ forty million, four hundred and twenty-four thousand _______ two thousand six hundred and seventy-four one hundred and sixty-four million, two hundred and thirteen thousand, four hundred and thirty eighteen million, three hundred and fifty-seven thousand, and eighty-nine 28,656 40,424,000 Production 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 乞力马扎罗山 25,768 /ˈkjuːbɪk/ adj. 立方的 /maɪl/ n. 英里 因加瀑布 东非大裂谷 塔克拉玛干沙漠 three hundred and thirty-seven thousand four thousand 04 Summary Sum up what you have learned. 形容词和副词的比较级与最高级 较大数字的表达 规则变化、不规则变化 比较级和最高级的构成 Summary 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 more and more + 形容词/副词原级 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 thousand million 9，365,278,689 billion 05 Language Points 词 讲 练 It went on for as far as the eye could see.它一眼望不到头。（教材P35 4c） as far as... 远至（某处） （2024·四川遂宁·中考真题）Everything is possible ________ you work hard. A. as much as B. as soon as C. as long as D. as far as Language points 拓展：as far as... 就……的限度，到……的程度 相关短语&例句 as far as I/we know 据我/我们所知 as/so far as I can see 依我看 1. As far as we know, the Sahara is the biggest desert in the world. 据我们所知，撒哈拉沙漠是世界上最大的沙漠。 2.As far as I can see, there is no difference between the two computers. 依我看，这两台电脑没有差别。 D 06 Exercise 用所给词的适当形式填空。 Exercise 1.(2025·扬州中考) The international influence of Yangzhou is getting ________ than before. (strong) 2.(2025·德阳中考改编) Lin Tao runs ________(fast) than his classmates. He is the running star in his class. 3.(2025·达州中考) The Yangtze River is the ________(long) river in China. 4.(2025·白银中考) The more we communicate with our parents, the _______ (good) we'll understand each other. 5.(2025·成都中考改编) Miss Li always has a lot of work to do. For her, nothing is _______________(important) than a proper plan. 6.(宁波中考改编) For most of the students, June is always the ________(busy) month in a year. 7.Qian Xuesen, father of China's space program, is one of the ________(great) scientists in the world. stronger faster longest better more important busiest greatest 单项选择 Exercise 1.The National Library of China is ______ public library in Asia. A. large B. larger C. largest D. the largest 2. In a DIY club, the more we practice, ______ we become. A. the worse B. the worst C. the better D. the best 3. Journey to the West is one of ______ classic novels in China. People like reading it. A. famous B. more famous C. the more famous D. the most famous 4. It is said that smart technology is making people ______ than before and doing them harm. A. lazy B. lazier C. laziest D. the laziest D C D B 补全句子。 Exercise 1. 赛龙舟是端午节最热闹的一项活动。它展示了人与人之间团结合作的精神。 The Dragon Boat Race is ______ ______lively activity of the Dragon Boat Festival. It shows the spirit of unity and cooperation among people. 2. 我们应该学会正确使用人工智能，让我们的生活越来越好。 We should learn how to use AI properly to make our lives _____ ____ ____. the most better and better 07 Homework Homework 基础作业 拓展作业 实践作业 总结梳理形容词和副词的比较级和最高级的语法知识并绘制思维导图。 制作一张“世界之最”英文小卡片，选一处自然景观，用数据、比较级、最高级等描述其特征。 上网查询更多关于自然奇观的介绍，用数据、比较级、最高级等描述比较2~3处自然景观，并制作成图文并茂的成果。 Thank you for listening $