Unit 4 Section A Grammar focus (3a-3c) 课件 2026-2027学年人教版英语八年级上册

Unit3 Amazing Plants and Animals Section A What can plants and animals do? Grammar Focus (3a-3c) 语法课优质课 单元主题范畴：人与自然 单元主题内容：热爱与敬畏自然，与自然 和谐共生 (2024新版)人教版 八年级(上册) Learning Objectives 1.准确识别和理解形容词和副词最高级的构成形式，包括规则变化（如加 -est、most + 原级等）和不规则变化（如 good - best，bad - worst 等）。（学习理解） 2.掌握形容词和副词最高级的基本句型，如用于三者及以上之间的比较（the + 形容词最高级 + 名词 + in/of...；疑问词+V/be(+the)+最高级, A, B or C？;one of the + 形容词最高级 + 可数名词复数 + 范围。 （学习理解，应用实践） 3.在阅读中识别最高级的用法，并理解其在句子中的含义和作用；提升语言运用能力，让学生在运用最高级进行交流和表达的过程中，感受英语表达的丰富性与准确性。（迁移创新） Look and fill Giraffes are the __________ animal in the world. tallest Complete the sentences with the superlative forms of the words in brackets. Giraffes are the tallest animals on land. Their long necks help them eat the __________(high) leaves in trees. They have the _________(long) legs of any animal. highest longest Cheetahs run the ______________ in the world. fastest They gain speed the _______________(quickly) , reaching 110 km/h in seconds! When hunting, they move the _______________(silently) through tall grass. Baby cheetahs learn to hunt the _________(early) among big cats – at just 6 months old. most quickly most silently earliest Look and fill Complete the sentences with the superlative forms of the words in brackets. African elephants are the __________ and __________ land animal in the world. biggest heaviest They have the __________(long) “noses” and the ______ (big) ears! They drink the __________(much) water daily – over 200 liters. Baby elephants are the __________(tiny) when born but grow the fastest. Watching baby elephants play is one of Africa’s _______________(wonderful) sights! longest biggest most tiniest most wonderful The panda thinks he is the__________ and __________ __________ animal. Do you agree? cutest most popular Pandas are one of ______________(popular) animals in the world. These black-and-white bears love bamboo the _________(much) – it's 99% of their diet. Pandas live in misty Sichuan mountains. As symbols of friendship, they're China's _______(dear) gifts to other nations. Protecting them is our ______________(important) duty! the most popular most dearest most important Watch and say Let’s watch. 最高级语法探险之旅 Today, we’ll be ‘grammar explorers’ to discover how to express ‘最……’ in English! Who knows the most? Look and say The Sahara Desert is___________hot desert in the world. the largest 表明范围 large+(e)st The Tibetan Plateau is_____________ plateau in the world. the highest high+est 表明范围 Look and say Lake Baikal is___________lake in the world. the deepest deep+est 表明范围 The Nile is__________river in the world. the longest long+est 表明范围 Presentation Look and say Who knows the most? I think... bamboo is______________ plant in the world. the most useful most + useful Redwood tree It’s ___________ tree in the world. the tallest tall+est moss It’s ___________ plant in the world. the oldest old+est mimosa含羞草 It’s ___________ plant in the world. the shyest shy+est Look and say Who knows the most? Which insect has the most colorful wings? butterfly蝴蝶 I think that __________ has the most colorful ________. butterfly wings most + colourful The three-toed sloth (三趾树懒) is __________(slow) land animal, moving at about 0.24 km/h. the slowest slow+est I think... The lotus 荷花 /'ləʊtəs/ n.莲花 In my opinion, the Lotus is ________________(beautiful) flower. the most beautiful most+beautiful Look and guess 形容词副词最高级的定义 1 Why do we use superlatives? To compare three or more people, places or things. To show the extremes. 形容词、副词的最高级用于________________的人或事物之间的比较，常用______________________来说明比较的范围。 形容词最高级前要加_________，副词最高级前的the_______。 定义 特点 三个或三个以上 of / in / among短语 定冠词the 可省略 1) Li Ming is the tallest student in our class. 2) This rabbit runs （the） fastest of all the animals here. 3) The park in spring is the most beautiful in a year. 4) Among these books, this storybook is the most interesting. Presentation 3a Read the sentences and notice the words in bold. What are the ways to form a superlative adjective or adverb? The blue whale is the largest and heaviest animal in the world. The biggest land animal in the world is the African elephant. The cheetah runs the fastest among all land animals. I think the most useful plant in the world is bamboo. It is perhaps the most interesting plant in the world. Do you know the rules? 单音节词 + -est 双音节词(变y为i) + -est 单音节词(双写g) + -est 单音节词 + -est most + 双音节词 most + 多音节词 音节；是否是规则变化 Read and say Look and say 2 1 3 4 slow-slower-slowest fast-faster-fastest high-higher-highest short-shorter-shortest tall-taller-tallest close-closer- closest late-later-latest nice-nicer-nicest large-larger-largest big-bigger-biggest thin-thinner-thinnest fat-fatter-fattest hot-hotter-hottest funny-funnier-funniest easy- easier-easiest lazy-lazier-laziest early-earlier-earliest 一般在词尾加 以字母e结尾的词加 重读闭音节词只有一个辅音字母时, 辅音字母, 以辅音字母加“y”结尾的双音节词,先改 为 再加 est st 双写 再加est y i est 形容词副词的 规则变化 单音节词和 部分双音节 形副词最高级规则变化 2 Look and say 形容词副词的 规则变化 多音节词和 部分双音节 多音节词和部分双音节词,在前加______. most comfortable–more comfortable- most comfortable popular-more popular-most popular carefully-more carefully-most carefully quickly-more quickly- most quickly 最高级规则变化口诀 最高级，很容易，一般词尾加est。 (tall-tallest) 词尾若有哑音e, 直接就加st。(nice-nicest) 重读闭音节， 单辅音字母要双写。(big-biggest) 辅音字母若加y, 记得把y变为i。(lazy-laziest) 多音节，此前加上most。(popular-most popular) 形副词最高级规则变化 2 Look and say 形副词最高级不规则变化 2 常用的不规则形容词比较级和最高级变化形式 原级 比较级 最高级 good/well better many/ much more bad/ill/badly worse old older/elder far farther/ further 两好三坏， 两多一少， 一远一老 best most worst oldest/eldest farthest/furthest Presentation 3a Read the sentences and notice the words in bold. What are the ways to form a superlative adjective or adverb? The blue whale is the largest and heaviest animal in the world. The biggest land animal in the world is the African elephant. The cheetah runs the fastest among all land animals. I think the most useful plant in the world is bamboo. It is perhaps the most interesting plant in the world. 最高级有范围吗？ 是的，最高级通常有范围。这个范围是区分比较级和最高级的关键。 Read and say Look and say 她是她班上最聪明的学生。 She is the smartest student in her class. “in her class” 指在班级这个组织范围内。 他是他们当中最高的。 He is the tallest of them. “of them” 明确在 “他们” 这几个人中进行比较。 猎豹在陆地动物中是跑得最快的。 The cheetah is the fastest among land animals. “among land animals” 表示在众多陆地动物中比较。 in+范围 of +同类特定群体 among + 同类事物 / 人 Presentation 3a Read the sentences and notice the words in bold. What are the ways to form a superlative adjective or adverb? The blue whale is the largest and heaviest animal in the world. The biggest land animal in the world is the African elephant. The cheetah runs the fastest among all land animals. I think the most useful plant in the world is bamboo. It is perhaps the most interesting plant in the world. 形容词最高级的前面一般要加定冠词the，副词最高级前的the可以省去。 如果最高级前有形容词性物主代词或名词所有格等修饰语时则不再用定冠词the。 This is my worst performance. She is Lucy’s best friend. Look and say Presentation The blue whale is the largest and the heaviest animal in the world. The biggest land animal in the world is the African elephant. The cheetah runs the fastest among all land animals. I think the most useful plant in the world is bamboo. It is perhaps the most interesting plant in the world. Why do we use a superlative adjective or adverb? To show something is the number one or the only one. To share your own feelings or favorite things. Look and say Look and say 形副词最高级句型结构 3 The blue whale is the largest and heaviest animal in the world. The cheetah runs the fastest among all land animals. (定冠词) adj.(形容词) in /of /among短语(比较的范围) 句型1： 主+be+_____+形容词_______+___________________________ in /of/among 短语(比较的范围) the 最高级 主+ _________+ (the) adv最高级+in /of/among 短语(比较的范围) 实义动词 Tip: 最高级前一般要加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。 Tip: 副词最高级前的定冠词 “the”通常在非正式语境中常被省略。 Look and guess 我认为世界上最有用的植物是竹子。 它或许是世界上最有趣的植物。 I think the most useful plant in the world is bamboo. It is perhaps the most interesting plant in the world. 莉萨是我所有同学中最高的女孩。 Lisa is the tallest girl of all my classmates. Tom runs (the) fastest among the boys in our class. 汤姆在我们班的男生中跑得最快。 Practice in表在某一范围（如地点、群体）内 of表所属的同类群体 among表在三者及以上之中。 Look and say 3b rose /rəʊz/ n.玫瑰；蔷薇 peony /ˈpiːəni/ n.牡丹；芍药 lotus /ˈləʊtəs/ n.莲花 butterfly /ˈbʌtəflaɪ/ n.蝴蝶 wing /ˈwɪŋ/ n.翅膀；翼 frog //frɒɡ/ n.蛙；青蛙 Presentation 3b Complete the sentences with the superlative forms of the words in brackets. Find some mark words first. the adj./adv 最高级形式 a certain range 特定的范围 the cutest the most beautiful heaviest the most colourful (the) highest the largest stand up to 高达 weigh up to 重达 Read and fill Look and say 3b Complete the sentences with the superlative forms of the words in brackets. 1. Among all animals, I love pandas the best. I think they are _________ (cute) animals in the world. 2. Which do you think is _______________ (beautiful), the rose, the peony, or the lotus flower? 3. Look at that butterfly! It has ________________ (colourful) wings. 4. Which animal jumps ____________ (high), the lion, the monkey, or the tree frog? 5. The elephant birds were _________ (large) and _________ (heavy) birds ever on earth. Some could stand up to three metres tall and weigh up to 860 kg. the cutest the most beautiful the most colourful (the) highest 句型2： 疑问词+V/be(+the)+最高级, A, B or C？“ABC中，哪一个最...” Presentation 3c Complete the passage with the superlative forms of the words in the box. ancient beautiful common good popular The ginkgo tree is one of ________________ living trees on earth. Ginkgo trees first appeared over 200 million years ago. Chinese people love the ginkgo, as it is a symbol of hope and long life. Many Chinese believe that the old ginkgo tree in the Zhongnan Mountains in Shaanxi Province is ____________________. This tree is over 1,400 years old. Thousands of tourists come to see it each year, especially in mid-October, as it is _____________ time to see it. The ginkgo tree is one of __________________ trees in streets, parks, and gardens across China. When autumn comes, one of _____________ activities is to take a walk under ginkgo trees. People believe the bright yellow leaves can bring joy to their heart. the most ancient the most beautiful the best the most common the most popular /ˈɡɪŋkəʊ/ n.银杏；银杏树 Read and fill Presentation Watch and learn Look and say 3c Complete the passage with the superlative forms of the words in the box. ancient beautiful common good popular The ginkgo tree is one of ____________________ living trees on earth. Ginkgo trees first appeared over 200 million years ago. Chinese people love the ginkgo, as it is a symbol of hope and long life. Many Chinese believe that the old ginkgo tree in the Zhongnan Mountains in Shaanxi Province is ___________________. Thousands of tourists come to see it each year, especially in mid-October, as it is _________ time to see it. The ginkgo tree is one of ____________________ trees in streets, parks, and gardens across China. When autumn comes, one of _________________ activities is to take a walk under ginkgo trees. People believe the bright yellow leaves can bring joy to their heart. the most ancient the most beautiful the best the most common the most popular 句型3： “one of the + 形容词最高级 + 可数名词复数 + 范围” 表示 “最…… 的…… 之一”，强调在一个范围内， one of + the + 形容词最高级 + 可数名词复数 + 谓语（单数形式） 表示“…… 是…… 中最…… 的…… 之一” Look and fill 及时训练 猴子是最聪明的动物之一。 Monkeys are one of _____________animals. 2.北京是中国最古老的城市之一。 Beijing is one of ____________ cities in China. 3.熊猫是最受人们喜爱的动物之一。 Pandas are one of __________________________ loved by people. 4.珠穆朗玛峰是世界上最高的山峰之一。 Mount Qomolangma is ________________ mountains in the world. the cleverest the oldest the most popular animals one of the highest Look and fill 及时训练 中国最美味的食物之一是饺子。 One of _________________ foods in China_____ dumplings. 2.世界上最高的建筑之一是哈利法塔。 One of ___________________ in the world _____ the Burj Khalifa. 3. One of _______________ (beautiful) cities in Europe ____ Paris. 4. One of _____________ (long) rivers in the world _____ the Nile. the most delicious is the tallest buildings is the most beautiful is the longest is Look and say 形副词最高级句型结构 3 句型4： 黄河是中国的第二大长河。 The Yellow River is the second longest river in China. 海南是中国的第二大岛。 Hainan is the second largest island in China. the + 序数词（second/third…) + 最高级 + 名词 + 表示范围的短语 “……是第(二/三)……最……” Look and fill 及时训练 The Yangtze River is the _________ (long) river in China, and the Yellow River is the _________ (two) _________ (long) one. 2. This building is the ________ (three) _______ (tall) structure in our city. 3. That movie is the ______ (five) _______________ (interesting) film I have seen this year. 4. The elephant is the _______ (four) _________ (heavy) animal in the zoo. longest second longest third tallest fifth most interesting fourth heaviest Look and say 形副词最高级句型结构 3 句型5：比较级表达最高级 他比班上其他任何一个学生都要高。 He is taller than any other student in our class. 他比班上其他学生都要高。 He is taller than the other students in our class. 主语+be/v. 比较级than any other n.单数+比较范围 “......比其他任何一个都......” 主语+be/v. 比较级than the other n.复数+比较范围 “......比其他......都......” Look and fill 句型转换 Shanghai is larger than the other cities in China. → Shanghai is larger than ______ ______ ______ in China. 2.The Pacific Ocean is the largest ocean in the world. ① The Pacific Ocean is larger than ______ ______ ______ in the world. ② The Pacific Ocean is larger than ______ ______ ______ in the world. any other city any other ocean the other oceans Look and say 注意事项：形容词最高级前不用the的情况 (1)形容词最高级用于同自身不同场合相比较时不带the。例如： I’m busiest on Mondays. 我星期一最忙。 (2)形容词最高级前有物主代词、名词所有格时，不带the。例如： Alice is the old man’s youngest daughter. 艾丽斯是这位老人最小的女儿。 (3)两个或多个形容词的最高级并列使用，从第二个起，就不带the。 例如：Bob is the youngest and tallest boy in our class. 鲍勃是我们班最小也是最高的男孩。 (4)形容词最高级在句中作宾语补足语时，常不带the。例如： I think grammar hardest in our English study. 我认为在我们的英语学习中语法最难。 Look and say 小组口语表达“My World’s Best”短文，内容可涉及： “My favorite animal is... It’s the... in the world. My most beloved book is... because it’s the most... one I’ve read.” - 当堂分享，投票选出“最具创意探险组”。 Groupwork Look and say My World's Best My favorite animal is the panda. It's the cutest animal in the world. Pandas love eating bamboo and they look really lovely. My favorite book is Harry Potter. It's the most interesting book I've read. The story is about magic and friendship. Every time I read it, I feel very excited. It makes me think there are many amazing things in the world. I like sunflowers best. They are the most beautiful flowers in my eyes. Sunflowers are always yellow and follow the sun. They look like little suns. I love them very much. Sample Presentation What are the benefits of using superlative degrees in daily life? It helps us describe differences more clearly, like "My schoolbag is the heaviest in the class." Look and say Presentation Class test 1.Which color do you like ________ (well), white, blue or green? 2.I think Blue Light is one of the ________ (bad) restaurants in our town. 3.The third ________(long) river in the world is the Yangtze River. 4. AI is one of the ____________(amazing) inventions. I think it will change the world. 5.When Helen won a prize in the English competition, she believed she was the (happy) girl in the world. best worst longest most amazing happiest 一、用所给词的适当形式填空 Presentation Class test China is an amazing country. It has the world’s _________ (high) mountain. The Yangtze River is its _________(long). Pandas are the _______________ (famous) of all the animals in our country. The Silk Road is the _______(old) trading road to the world. When we plan a trip, making choices doesn’t mean to choose the _________(good) or the __________________(expensive) one, but the _____________ (proper) one. 二、用所给词的适当形式填空 best most expensive most proper highest longest most famous oldest Presentation Must-do 必做 1.Summarize the differences between the comparative and superlative adjectives and adverbs. Choose to do 选做 2.Create a "The World Record" poster and describe it using superlative adjectives or adverbs. $The ginger tree is a unique and ancient tree species that has been around for over two hundred million years, sometimes called the living fossil. IT is known for its beautiful fan shape leaves, which turned bright yellow in the fall. It's also famous for its resilience and ability to survive in harsh conditions, making IT a symbol, strength and entrance. The ginger tree produces small plum like fruits in the fall, which have a strong smell but contain a nut like seed inside. Though the outer part of the fruit can be messy and smelly, the seeds are appreciated in asian cultures. 是什么？ Good, Better, best, bad, worse, worse, many, more, most much more, most little less. Read far, father far this. 你都学会了吗？学会了给老师一颗小星星。