Unit 4 Section A(Grammar Focus-3c)课件 2025-2026学年人教版（2024）八年级英语上册

Unit 4 Amazing Plants and Animals Section A Grammar Focus-3c Let’s enjoy videos. Warming up The blue whale is the largest and heaviest animal in the world. The biggest land animal in the world is the African elephants. The cheetah runs 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. 3a. Read the sentences and notice the words in bold. What are the ways to form a superlative adjective or adverb? 形容词、副词的最高级用于三个或三个以上的人或事物之间的比较，常用of/in短语来说明比较的范围。 形容词最高级前要加定冠词the， 副词最高级前的the可省略。 定义 特点 形容词、副词的最高级 It is the most popular cinema in the city. He is the tallest of the three. He runs (the) fastest. 形/副词最高级的构成（规则变化） 构成方法 原级 最高级 单音节词和部分双音节词 high tall highest tallest fine nice finest nicest big thin biggest thinnest easy funny early easiest funniest earliest 1. 一般在词汇尾加-est 2. 以字母e结尾的词，在词尾加-st 3. 重读闭音节词词尾只有一个辅音字母时，先双写该辅音字母，再加-est 4. 以“辅音字母+y”结尾的双音节词，先把“y”变为“i”， 再加-est 形/副词最高级的构成（规则变化） 构成方法 原级 最高级 多音节词和部分双音节词 在词前加most comfortable carefully most comfortable most carefully Tips: 由“动词+-ed”或“动词+-ing”构成的形容词变最高级时，通常在该形容词前加 most。 interesting→most interesting relaxed→most relaxed exciting→most exciting boring→most boring 原级 最高级 good/well best bad/badly/ill worst many/much most little least far farthest/furthest old oldest/eldest 形/副词最高级的构成（不规则变化） 写出下列形容词或副词的最高级 1.creative _________________________ 2.beautifully _______________________ 3.big _________________________ 4.funny _________________________ 5.quiet _________________________ 6.good _________________________ 7.little _________________________ 8.bad _________________________ most creative most beautifully biggest funniest quietest best least worst 最高级的常用句型（一） ◆ “主语+ be+ the+形容词最高级+in/of 短语”意为 “……是……中最……的”。 ◆ “主语+实义动词（+the）+副词最高级+in/of 短语”意为 “……是……中最……的”。 ◆ “主语+be+ one of the+形容词最高级+可数名词复数+in/of 短语”意为“……是……中最……的……之一”。 My mother is the busiest one in my family. The Yangtze River is the longest river in China. Tom works (the) hardest in Class 3. Tianjin is one of the biggest cities in China. 最高级的常用句型（二） ◆ “疑问词+ be+ the+形容词最高级，甲、乙or丙？”用于三个或三个以上的人或事物之间的比较。 ◆ “疑问词+助动词+主语+动词原形（+the)+副词最高级，甲、乙or丙？” ◆ “主语+be + 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……”。 Who is the tallest, Tom, Kate or Bill? Which city do you like best, Beijing, Shanghai or Guangzhou? The Yellow River is the second longest river in China. 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. 3b. Complete the sentences with the superlative forms of the words in brackets. the cutest the most beautiful the most colourful highest the largest the heaviest 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. 3c. Complete the passage with the superlative forms of the words in the box. ancient beautiful common good popular the most ancient the most beautiful the best the most common the most popular Some could stand up to three meters tall and weigh up to 860 kg. 有些能够长到高达3米，重达860千克。 Language points weigh 及物动词，表示“称……的重量；重(多少)” eg：Do you often weigh yourself? 你经常称体重吗？ 名词形式为 ____________ eg：He has grown both in height and weight. 他的身高和体重都增加了。 weight 对重量提问，可以用以下几种句型： How much does. .. weigh? How heavy is. ..? What is the weight of. ..? 【对点训练】 1．(2023·龙东) The baby pandas often ________ (weight) about 0.1 to 0.2 kilos at birth. 2．My aunt eats less these days because she says she wants to lose （weigh）. weigh weight Describe their favourite animals, plants or other things in the superlative adjective or adverb. Free Talk Exercise 一、单句语法选择 1. Of all the students, Lucy lives the ________ to school . She always walks to school. A．farther B．farthest C．close D．closest 2．This is one of ____ films of this year. more exciting B. exciting C. the most exciting D. most exciting 3．Which do you like ________, bread, eggs or sandwiches? A．better B．best C．well D．much D C B 4．Tom has just got the only chance to visit Peking University. She is the ______student in class. lucky B. luckier C. luckiest D. luckily 5．—Our class did well in the school singing competition. —Yes, you sang ________ of all. beautifully B. most beautiful C. most beautifully D. more beautifully C C 二、用所给词的适当形式填空 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 Homework 必做： 1. Summarize the differences between the comparative and superlative adjectives and adverbs. 2. Construct a sentence using a superlative adjective or adverb. This sentence should describe the "most" thing in a certain field that you think, such as the biggest, the fastest, the tallest, etc. 选做： Create a "World's Greatest" poster and describe it using superlative adjectives or adverbs. Lavf52.104.0 Lavf55.33.100 Lavf55.33.100 Lavf55.33.100 $$