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Unit 2 Amazing Plants and Animals 写作专项学案
写作目标
结合本单元“奇妙的动植物”主题，写一篇介绍神奇动植物（如蓝鲸、竹子、猎豹等）或阐述动植物与人类关系的短文，阐述动植物的独特特征、生活习性及重要价值，达成以下目标：
1.能正确使用本单元“动植物与自然”相关核心词汇（如plant、animal、bamboo、whale、cheetah、ginkgo、bee、pollination、honeycomb、survive、protect等）及短语（be famous for、be known as、grow up、play an important part in、take care of、live on、die out、be connected with等）；
2.能熟练运用形容词和副词的最高级（-est/most...），掌握“the + 最高级 + in/among...” “one of the + 最高级 + 名词复数”等常用句型，正确使用“It’s amazing that...” “Without...,...can’t...”等表达；
3.能按“主题引入→核心细节（特征/习性）→价值与感悟”的逻辑完成写作，贴合“珍爱动植物，共护自然家园”的单元主题。
题目解析
1.体裁：说明类短文或感悟类短文，兼具知识性与情感性；
2.人称：第三人称（客观介绍动植物）或第一人称（表达个人感悟）为主；
3.核心要求
内容：覆盖“1个核心动植物、2-3个关键细节（外形特征、生活习性、独特能力）、1个生态价值或保护感悟”3个要点；
字数：70–90词，描述准确科学、细节具体生动，语言符合七年级学生水平，体现对自然的热爱与保护意识。
思路点拨
1.开头：明确引入核心动植物（如“竹子是世界上最神奇的植物之一” “蓝鲸是地球上最大的动物”），用简洁句式点明其核心亮点（如“以生长速度快和用途广泛闻名” “以庞大体型和温和习性令人惊叹”），用感叹句或介绍性语言引出下文具体描述；
2.中间：按“特征→习性→能力”展开，描述动植物的外形（如蓝鲸的巨大体型、竹子的挺拔形态）、生活环境（如猎豹生活在非洲草原、竹子生长在温暖湿润地区）、独特能力（如猎豹的极速奔跑、蜜蜂的授粉本领），结合最高级和具体数据补充细节，体现其“奇妙”之处；
3.结尾：分享生态价值（如“蜜蜂是生态系统的关键，没有它们很多植物无法生长” “竹子为人类提供多种资源，还能净化空气”）或保护感悟（如“动植物是自然的馈赠，我们要好好保护它们” “保护动植物就是保护人类自己”），呼应单元“Amazing Plants and Animals”的核心主题，传递热爱自然、守护生态的积极态度。
写作模板（逐段拆解）
模板一：介绍神奇植物——竹子（Bamboo）
第一段：主题引入与核心地位
基础句式：________ (植物名称) is one of the most amazing plants in the world. It is famous for ________ (核心特色，如its fast growth and wide use) and plays an important role in nature and human life.
示例：Bamboo is one of the most useful and amazing plants on earth. It grows in many parts of China, especially in Sichuan. It is well-known for its rapid growth and various uses.
第二段：核心特征与细节
基础句式：Bamboo is one of the ________ (最高级 + 特征，如fastest-growing) plants. Some types can grow almost ________ (数字) metre(s) in one day. It has a straight stem and green leaves. What’s amazing is that ________ (独特特征，如it can be used to build houses, make tools and even eat). Pandas love it very much—bamboo shoots are their favourite food.
示例：Bamboo is the fastest-growing plant in the world. Some bamboo can grow up to one metre a day! It has strong stems and long, thin leaves. Unlike many plants, it doesn’t have a wooden trunk. What’s more, it’s super useful: people use it to make furniture, paper and musical instruments. Pandas also depend on it for food.
第三段：生态价值与感悟
基础句式：Bamboo is not just useful for humans and animals. It also helps ________ (生态价值，如keep the soil and clean the air). We should ________ (保护行动，如protect bamboo forests and value this amazing plant). It teaches us that nature provides us with precious gifts.
示例：Bamboo is a treasure of nature. It helps prevent soil erosion and purifies the air. It’s also a symbol of goodness in Chinese culture. We should protect bamboo forests so that pandas and other animals can have enough food. This amazing plant reminds us to love and respect nature.
模板二：介绍神奇动物——蜜蜂（Bees）
第一段：主题引入与核心地位
基础句式：________ (动物名称) are some of the most important and amazing animals on our planet. They are small but powerful, and our world can’t live without them.
示例：Bees are among the most amazing and necessary animals on earth. Though they are tiny, they play a big role in keeping nature balanced. We can’t imagine a world without bees.
第二段：核心特征与细节
基础句式：Bees are hard-working creatures. Every trip, they visit ________ (数字) flowers to collect nectar and pollen. Their greatest work is ________ (独特能力，如pollination)—without it, about 80% of plants can’t grow. They live in groups and build amazing ________ (栖息地，如honeycombs) to store honey. They also communicate with each other by dancing!
示例：Bees are super hard-working. On one trip, they can visit 50 to 100 flowers to get nectar and pollen. Their most important job is pollination: without bees, most fruits and vegetables can’t grow. They live in hives and make perfect honeycombs to store honey. What’s interesting is that they use dances to tell other bees where food is!
第三段：生态价值与感悟
基础句式：Bees are vital to our ecosystem. However, their number is dropping. We should ________ (保护行动，如plant more flowers and not use harmful chemicals). Protecting bees is protecting ourselves and our planet.
示例：Bees are the “little helpers” of nature. They help plants grow and keep the ecosystem healthy. But now, many bees are in danger. We should plant more flowers and avoid using harmful pesticides. Protecting bees is not just protecting an animal—it’s protecting our food and our home!
范文
The Amazing Blue Whale
The blue whale is the largest and heaviest animal in the world—an amazing giant of the ocean. It can weigh up to 200 tons and live up to 90 years.
Blue whales live in all oceans except the Arctic. They eat tiny sea creatures, and a single blue whale can eat about four tons of food a day. Despite their huge size, they are gentle and never hurt humans. When a blue whale dies, its body becomes food for many sea animals, helping build a lively ecosystem.
Blue whales are important to the ocean. But they are in danger from pollution and ship strikes. We must protect them. This amazing animal teaches us that every creature has a role to play in nature. We should love and protect all living things!
范文中文翻译
神奇的蓝鲸
蓝鲸是世界上最大、最重的动物——海洋中令人惊叹的巨兽。它体重可达200吨，寿命最长能达到90年。
蓝鲸生活在除北冰洋以外的所有海洋中。它们以微小的海洋生物为食，一头蓝鲸一天就能吃掉约四吨食物。尽管体型庞大，蓝鲸却性情温和，从不伤害人类。当蓝鲸在海洋中死亡后，它的身体会成为许多海洋动物的食物，助力构建充满生机的生态系统。
蓝鲸对海洋至关重要，但它们正面临污染和船只撞击的威胁。我们必须保护它们。这种神奇的动物让我们明白，每种生物在自然界中都有自己的作用。我们应该爱护和保护所有生物！
素材积累
核心短语
be famous for 以……闻名
be known as 被称为
grow up 生长；长大
play an important part in 在……中扮演重要角色
take care of 照顾；保护
live on 以……为食；靠……生活
die out 灭绝
be connected with 与……有关联
prevent soil erosion 防止水土流失
purify the air 净化空气
collect nectar and pollen 采集花蜜和花粉
food chain 食物链
ecosystem balance 生态平衡
harmful chemicals 有害化学物质
sea creature 海洋生物
tiny but powerful 微小但强大
基础句型（含本单元重点）
基础句型 仿写句子
________ is the ________ (最高级) animal/plant in the world. The cheetah is the fastest land animal in the world.
________ is one of the most ________ (最高级) ________ (名词复数) on earth. The ginkgo tree is one of the most ancient trees on earth.
Without ________, ________ can’t ________. Without bees, many plants can’t produce fruits.
It’s amazing that ________. It’s amazing that bamboo can grow one metre a day.
________ plays a vital role in ________. The redwood tree plays a vital role in providing homes for birds.
好句集锦
1.Every amazing plant and animal has its own magic—they make our world colorful and balanced.
2.Small creatures like bees are not weak; they are the backbone of our ecosystem.
3.Nature’s wonders are all around us—we just need to observe and cherish them.
4.Protecting amazing plants and animals is not a choice, but a responsibility for every person.
谚语
1.Nature is the mother of all life.（自然是万物之母——强调自然与生物的关系）
2.Little things make a big difference.（小事成就大不同——适用于描述蜜蜂等小动物的重要性）
3.We do not inherit the earth from our ancestors; we borrow it from our children.（我们不是从祖先那里继承地球，而是向子孙借地球——强调保护自然的长远意义）
学生写作填空练习版
版本一：介绍神奇植物
________ (植物名称，如Ginkgo tree) is one of the most amazing plants in the world. It has a long history of over ________ (数字) years and is famous for ________ (核心特色，如its ancient origin and beautiful leaves).
It is ________ (特征1，如tall and strong) with ________ (特征2，如bright yellow leaves in autumn). What’s amazing is that ________ (独特特征，如it can live for hundreds of years). People love it because ________ (人们喜爱的原因，如it brings joy and purifies the air).
This plant is a treasure of nature. It teaches us to ________ (感悟，如cherish ancient living things). We should ________ (保护行动，如plant more of them and protect their living environment). Let’s love and protect this amazing plant!
版本二：介绍神奇动物
My favourite amazing animal is ________ (动物名称，如cheetah). It is the ________ (最高级 + 特征，如fastest land animal) in the world and lives in ________ (生活环境，如African grasslands).
It has ________ (特征1，如a slim body and spotted fur) and can run up to ________ (数字) kilometres per hour. Its favourite food is ________ (食物，如small animals like gazelles). What’s amazing is that ________ (独特能力，如it can accelerate quickly to catch prey).
This animal is amazing but in danger. We should ________ (保护行动，如stop hunting and protect its habitat). I believe that if we take action, ________ (展望，如these amazing animals will live safely). Every creature is important—let’s protect them!

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