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

Unit 4 Amazing Plants and Animals How are plants and animals connected with us? Section B 3a-3c写作课 Learning objectives 能回顾并运用形容词最高级的构成及句型（如 “the + 最高级 + in/of + 范围”），结合蓝鲸相关信息完成写作 能理解并正确使用形容词和副词的最高级来表达差异 激发对海洋生物的兴趣，树立保护濒危动物的意识，体会用英语介绍自然生物的成就感。 Watch and answer Read fast and answer. What’s the main idea of the text? The text mainly introduces some facts about blue whales, including their weight, food, lifespan, and their role in the ecosystem. 1.The blue whale is the largest animal on earth. What do you know about the blue whale? 2.Baby whales gain about 200 pounds a day 3.Its tongue is as weigh as an elephant 4.Their loudest sound can be heard up to 1,000 miles away Pre-reading Introduction What do you know about the blue whale? marine mammal biggest animal endangered species Place: deep ocean Food: krill（磷虾） ... Read the text and complete the table. 3a Blue whale facts Weight Where they live Food How long they live Importance in nature It tells us many facts about the blue whale What’s the type of the article? A. It is a narration(记叙文) B. It is an exposition(说明文) C. It is an argumentation(议论文) D. It is a practical writing(应用文) Pre-writing What's the text mainly about ? Blue whales are amazing and need protection Fast-reading Know something about the blue whale by reading 1. How many paragraphs are there in this article? Read the text and answer the questions. Two. 2. What’s the topic sentence for each paragraph? Para.1: The blue whale is the largest and heaviest animal on earth. Para.2: Blue whales play an important role in our world, so we must protect them. Blue whale facts Weight Where they live Food How long they live Importance in nature as much as 200 tons in all oceans except the Arctic Ocean some of the tiniest animals in the ocean up to 90 years When a blue whale dies, it becomes food for many animals and it helps to create a lively and healthy ecosystem. Check answers. Blue whale facts Weight Where they live Food How long they live Importance in nature as much as 200 tons in all oceans except the Arctic Ocean some of the tiniest animals in the ocean up to 90 years When a blue whale dies, it becomes food for many animals and it helps to create a lively and healthy ecosystem. Retell the text based on the table. weight Where Food importance in nature How long they live The Blue Whale The blue whale is the_______(large) and_______(heavy) animal on earth.It can weigh as _______(much) as 200 tons.Many people like watching blue whales _______(swim),and they think it is one of the __________(beautiful) things to see.Blue whales live in all oceans except the Arctic Ocean.They eat a lot,but they eat some of the_______(tiny)animals in the ocean.A blue whale can eat around four tons of these a day. Blue whales can live up to 90 years.When a blue whale _____(die) at sea,it becomes food for many kinds of animals_________(live) in and around the sea.This food _______(last) for over a year and it helps_______(create) a lively and healthy ecosystem.Blue whales play an importantrole in our world,so we must protect them. Think about the correct forms of the words in the bracket while reading The Blue Whale The blue whale is the_______(large) and_______(heavy) animal on earth.It can weigh as _______(much) as 200 tons.Many people like watching blue whales _______(swim),and they think it is one of the __________(beautiful) things to see.Blue whales live in all oceans except the Arctic Ocean.They eat a lot,but they eat some of the_______(tiny)animals in the ocean.A blue whale can eat around four tons of these a day. Blue whales can live up to 90 years.When a blue whale _____(die) at sea,it becomes food for many kinds of animals_________(live) in and around the sea.This food _______(last) for over a year and it helps_______(create) a lively and healthy ecosystem.Blue whales play an importantrole in our world,so we must protect them. Read and think about the correct forms of the words in the bracket largest heaviest much swim see/watch sb +do most beautiful tiniest dies living 非谓语动词 除了 一般现在时态 lasts to create 达到 as+adj/adv原形+as 大西洋 Passage Analysis 1 weight people’s preference living environment feeding habit 2 lifespan role in ecosystem importance Imagine you are a blue whale. Use the first person to rewrite the first paragraph. Hello everyone! My name is Billy the Blue Whale. I am __________ _______________________________________________________ I’m heavy, but I __________________________________________ I live in _________________________________________________ I can eat ________________________________________________ 3b Imagine you are a blue whale. Use the first person to rewrite the first paragraph. Hello everyone! My name is Billy the Blue Whale. I am ___________________ _________________________________ ________ I’m heavy, but I love ________ __________________________________________________________________ _______________________. I live in ___________________________. My favourite food is ________________ _________________ I can eat __________________________. My weight is as much as swimming most beautiful things to see all oceans except the Arctic Ocean some of the tiniest around four tons of them a day animal on earth. the largest and heaviest 200 tons. in the ocean. Many people like watching me swim, and they think I am one of the animals in the ocean. 人称由第三人称变成第一人称 语言: 个别句子需要变化结构 3b 第一人称 What should we mainly pay attention to when rewriting an article? 人称: 由第三人称变成第一人称 内容要点: 要点不能省略或者遗漏。 语言: 个别句子需要变化结构 weight living area food amount of food eaten preference Imagine you are a blue whale. Use the first person to rewrite the first paragraph. 3b Hello everyone! My name is Billy the Blue Whale. I am __________ _______________________________________________________I’m heavy, but I __________________________________________ _______________________________________________________ I live in ________________________________________________ _________________________________ I can eat ______________ _______________________________________________. the largest and heaviest animal on earth. I weigh as much as 200 tons. love swimming, and many people like watching me swim. They think it’s one of the most beautiful things to see. all oceans except the Arctic Ocean. My favourite food is of these a day some of the tiniest animals in the ocean. around four tons 第一人称 Post-reading(Writing) Complete your passage about the blue whale based on the text in 3a. 3c 写作指导 文本体裁 话题分析 要求写完成段落的改写，主要改写内容为3a第二段的内容，涉及到蓝鲸的寿命和对生态环境的重要性等内容。 本文将第三人称的段落内容，改写为第一人称的段落内容。分析原文章属于介绍类文章，改写后，还是自身特性介绍，因此是说明文。 人称时态 以第一人称为主；以一般现在时为主。 Blue whales can live up to 90 years. When a blue whale dies at sea, it becomes food for many kinds of animals living in and around the sea. This food lasts for over a year and it helps to create a lively and healthy ecosystem. Blue whales play an important role in our world, so we must protect them. Read the second part of 3a and find out the words that refer to the blue whale. How to use the first person to rewrite the second paragraph? Complete your passage about the blue whale based on the text in 3a. 3c 人称：第一人称叙事 时态：一般现在时为主 语言风格：生动活泼 文体：自身特性介绍，说明文。 可在事实基础上进行创意发挥 ① We can live up to 90 years. ① Blue whales can live up to 90 years. ② When a blue whale dies at sea, it becomes food for many kinds of animals living in and around the sea. ③ This food lasts for over a year and it helps to create a lively and healthy ecosystem. ④ Blue whales play an important role in our world, so we must protect them. Complete your passage about the blue whale based on the text in 3a. 3c ② When I die at sea, I become food for many kinds of animals living in and around the sea. ④ We play an important role in the world, so people must protect us. 3c Blue whales can live up to 90 years. When a blue whale dies at sea, it becomes food for many kinds of animals living in and around the sea. This food lasts for over a year and it helps to create a lively and healthy ecosystem. Blue whales play an important role in our world, so we must protect them. Complete your passage about the blue whale based on the text in 3a. points lifespan role /function importance weight Where Food importance in nature How long they live Summary 1.人称: 由第三人称变成第一人称 3.内容要点: 要点不能省略或者遗漏。 3.语言: 个别句子需要变化结构 when rewriting an article Protect Our OCEAN Protect Our FUTURE! Language points 1. Blue whales can live up to 90 years. 蓝鲸的寿命可达 90 年 。 live up to 达到；符合（期望等）；活到（某一年龄、岁数等） 例如： He always lives up to his parents' expectations. 他总是不辜负父母的期望。 【拓展】同义词 reach 达到（某一数量、程度、年龄等 ）；在表示活到某一年龄时，可与 “live up to” 替换。 例如： Some trees can reach a height of 30 meters. 有些树能长到 30 米高 。 Some people can reach 90 years old. 有些人能活到 90 岁 。 2. When a blue whale dies at sea, it becomes food for many kinds of animals living in and around the sea. 当一头蓝鲸在海洋中死去时，它会成为生活在海洋里及海洋周边的多种动物的食物。 living in and around the sea 整体是现在分词短语作后置定语，修饰前面的 animals。相当于一个定语从句 which/that live in and around the sea。 例如： The boy standing there is my brother. 站在那儿的男孩是我弟弟。 standing there 修饰 the boy，可转换为 The boy who/that is standing there is my brother. The blue whale is the largest and heaviest animal on earth. It can weigh as much as 200 tons. Many people like watching blue whales swim, and they think it is one of the most beautiful things to see. Blue whales live in all oceans except the Arctic Ocean. They eat a lot, but they eat some of the tiniest animals in the ocean. A blue whale can eat around four tons of these a day. Read and learn 在地球上 多达，达到……之多 adj. 极小的；微小的 Language points one of + the + adj.最高级+可数名词复数译为：最……之 It is + adj (+for sb) + to do sth （对某人来说）做某事来说是…… except prep.除……之外 exception n. 例外 Blue whales can live up to 90 years. When a blue whale dies at sea, it becomes food for many kinds of animals living in and around the sea. This food lasts for over a year and it helps to create a lively and healthy ecosystem. Blue whales play an important role in our world, so we must protect them. Language points live up to活到……岁；达到……的寿命 达到；符合（期望） adj. 精力充沛的；生机勃勃的 扮演一个重要的角色 die vi.死亡 death n.死亡 dead adj.死的；去世的 deadly adj. 致命的 many kinds of 许多种类的 different kinds of 不同种类的 all kinds of 各种各样的 a kind of 一种 play a(n) (+adj.) role/part in … 在……中发挥（adj.）作用 Must-do 必做 Choose-to-do 选做 1.Recite the language points. Do some research on other endangered marine animals and write a short report about their living situations and the importance of protecting them. 2.Finish the exercise on the workbook. Homework $