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Unit 6 Earth and Beyond 写作专项学案
写作目标
结合本单元“地球与太空”主题，写一篇介绍行星（如地球、火星、木星等）或畅想未来太空生活的短文，阐述行星特征、太空探索意义或未来太空生活场景，达成以下目标：
1.能正确使用本单元“宇宙与探索”相关核心词汇（如universe、solar system、planet、star、satellite、rocket、astronaut、explore、space、earth、mars、Jupiter等）及短语（go around、send into space、look up at、in the center of、be far from、be similar to、make up、play an important role in等）；
2.能熟练运用后缀 -ness 构成名词，掌握形容词比较级和最高级描述事物特征，正确使用“...is bigger than...” “The most amazing thing about...is...” “It’s possible that...”等常用句型；
3.能按“主题引入→核心细节（特征/场景）→感悟与展望”的逻辑完成写作，贴合“探索宇宙奥秘，传承探索精神”的单元主题。
题目解析
1.体裁：行星介绍类说明文或科幻畅想类短文，兼具知识性与想象力；
2.人称：第一人称（畅想太空生活）或第三人称（客观介绍行星）为主；
3.核心要求
内容：覆盖“1个核心主题（某颗行星/未来太空生活）、2-3个关键细节（行星大小/温度/特征/太空生活场景/探索意义）、1个探索感悟或未来展望”3个要点；
字数：70–90词，描述准确科学或畅想合理丰富，语言符合八年级学生水平，体现对宇宙的好奇与探索热情。
思路点拨
1.开头：明确引入核心主题（某颗行星的独特魅力或未来太空生活的畅想），用简洁句式点明主题核心（如“火星是太阳系中与地球最相似的行星” “我常常畅想未来在火星上生活的场景”），用感叹句或启发式语言引出下文具体描述；
2.中间：若介绍行星，按“位置→大小→温度→独特特征”展开，描述行星在太阳系中的位置、与地球的大小对比、表面温度及独特现象（如木星的光环、火星的红色土壤），结合比较级、最高级和后缀 -ness 补充细节；若畅想太空生活，聚焦“生活场景→科技应用→生存状态”，描述太空居住环境、交通方式、资源利用等场景，用合理想象展现太空生活的特点；
3.结尾：分享探索感悟（如“宇宙的奥秘无穷无尽，等待我们去发现” “太空探索让人类的视野更广阔”）或未来展望（如“我希望未来能成为宇航员，探索更多未知行星”），呼应单元“Earth and Beyond”的核心主题，传递对宇宙探索的热爱与执着追求。
写作模板（逐段拆解）
模板一：介绍某颗行星（火星）
第一段：行星引入与核心地位
基础句式：________ (行星名称) is one of the most interesting planets in the solar system. It lies ________ (位置，如far from the Sun/between Earth and Jupiter) and has many amazing features. It is often called ________ (别称，如the Red Planet) because of its special color.
示例：Mars is one of the most fascinating planets in the solar system. It lies between Earth and Jupiter and is about 228 million kilometers away from the Sun. People call it the Red Planet because its surface is covered with red soil.
第二段：行星特征与细节
基础句式：Mars is ________ (比较级，如smaller) than Earth—its diameter is about ________ (数字) kilometers. The temperature on Mars is much ________ (比较级，如colder) than that on Earth, with an average of ________ (数字) ℃. What’s special is that ________ (独特特征，如there is ice under its surface/it has two small moons). Unlike other planets, Mars is similar to Earth in ________ (相似点，如size and day length).
示例：Mars is smaller than Earth—its diameter is around 6,800 kilometers, while Earth’s is about 13,000 kilometers. The average temperature on Mars is minus 63℃, which is much colder than Earth’s 14℃. What’s amazing is that there is a lot of ice under its surface. It also has two small moons that go around it. These features make Mars a popular planet for scientists to explore.
第三段：探索意义与感悟
基础句式：Exploring Mars helps us learn more about the solar system. It is possible that ________ (探索价值，如there was life on Mars in the past). The ________ (名词，如brightness/importance) of exploring space tells us that human curiosity has no limits. I hope we can discover more secrets of Mars in the future.
示例：Exploring Mars is of great importance for human beings. Scientists are looking for signs of life there because it is the most similar to Earth. The mystery of Mars encourages us to keep exploring the universe. I believe that one day, we will uncover all the secrets of this amazing planet.
模板二：畅想未来太空生活（火星生活）
第一段：畅想引入与背景
基础句式：I often dream of living in space in the future. My favorite place to live is ________ (行星名称，如Mars/Jupiter). With the development of science and technology, this dream may come true soon.
示例：I have always dreamed of living on Mars when I grow up. As technology improves quickly, living on another planet is no longer just a fantasy. I imagine what my life there will be like every day.
第二段：太空生活场景与细节
基础句式：In my imagination, we will live in ________ (居住环境，如special houses with air systems) that can protect us from the bad environment. We will travel by ________ (交通方式，如small spacecraft) and eat ________ (食物，如food made from space resources). Every morning, I will ________ (日常活动，如look up at the Sun and the stars) from my window. The most amazing thing is that ________ (独特体验，如we can jump very high because of low gravity).
示例：In my imagination, we will live in modern and safe houses with advanced air systems—they can provide us with fresh air. We will travel around Mars by small, fast spacecraft. We will eat healthy food made from local resources and water from the ice under the surface. Every evening, I will walk on the red soil and look at the beautiful stars in the dark sky. The low gravity will let us jump much higher than on Earth—it will be so fun!
第三段：生活感悟与展望
基础句式：Living in space will be a wonderful experience. It will teach us to ________ (收获，如cherish resources/cooperate with each other). I will study hard to become a(n) ________ (职业，如astronaut/scientist) and make my dream come true. Exploring the universe is a lifelong journey for humans!
示例：Living on Mars will be an unforgettable experience. It will make us cherish the resources on Earth and learn to work together to overcome difficulties. I will study hard in math and science to become an astronaut. I hope to be one of the first people to live on Mars and explore its beauty. The universe is full of surprises, and we should never stop exploring!
范文
My Favorite Planet—Jupiter
Jupiter is the largest planet in the solar system and one of the most amazing celestial bodies. It lies far from the Sun, about 778 million kilometers away, and is mainly made of gas.
Jupiter is much bigger than Earth—its diameter is around 140,000 kilometers, which is more than 11 times that of Earth. It has a famous feature—the Great Red Spot, a huge storm that has lasted for hundreds of years. Unlike inner planets, Jupiter has many moons—more than 90 are known so far. The temperature on Jupiter is very low, around minus 145℃, so there is no life there.
Jupiter plays an important role in the solar system. It helps protect inner planets from asteroids. Exploring Jupiter tells us how planets form and develop. I am always amazed by its size and beauty. The universe is so wonderful, and I want to learn more about it!
范文中文翻译
我最喜欢的行星——木星
木星是太阳系中最大的行星，也是最神奇的天体之一。它距离太阳约7.78亿公里，主要由气体构成。
木星比地球大得多——它的直径约为14万公里，是地球直径的11倍多。它有一个著名的特征——大红斑，一场已经持续了数百年的巨大风暴。与内行星不同，木星有许多卫星——目前已知的超过90颗。木星表面温度极低，约为零下145℃，因此那里没有生命存在。
木星在太阳系中扮演着重要角色，它帮助保护内行星免受小行星撞击。对木星的探索能让我们了解行星的形成和演化。我一直对它的大小和美丽感到惊叹。宇宙如此奇妙，我想了解更多关于它的知识！
素材积累
核心短语
go around 围绕……运行
send into space 送入太空
look up at 仰望
in the center of 在……的中心
be far from 远离
be similar to 与……相似
make up 组成；构成
play an important role in 在……中扮演重要角色
signs of life 生命迹象
solar system 太阳系
spacecraft 宇宙飞船
air systems 空气系统
low gravity 低重力
celestial bodies 天体
asteroid belt 小行星带
inner planets 内行星
outer planets 外行星
基础句型（含本单元重点）
基础句型 仿写句子
________ is the ________ (最高级) planet in the solar system. Saturn is the most beautiful planet in the solar system.
________ is ________ (比较级) than ________ because ________. Venus is hotter than Earth because it is closer to the Sun.
The most amazing thing about ________ is ________. The most amazing thing about Saturn is its beautiful rings.
It is possible that ________ in the future. It is possible that humans will live on Mars in the future.
Exploring ________ helps us ________. Exploring the universe helps us broaden our horizons.
好句集锦
1.The universe is like a huge book, and every planet is a wonderful page waiting for us to read.
2.Space exploration is not just about discovering new planets, but about challenging human limits.
3.Every planet has its own secrets—exploring them makes us more humble and curious.
4.The beauty of the solar system lies in the differences between planets, and each one is unique and precious.
谚语
1.Curiosity is the mother of invention.（好奇心是发明之母——适用于表达宇宙探索的动力）
2.Nothing is impossible to a willing heart.（有志者事竟成——适用于表达探索太空的决心）
3.To see is to believe.（眼见为实——适用于描述太空探索的发现）
学生写作填空练习版
版本一：介绍某颗行星
________ (行星名称) is a wonderful planet in the solar system. It lies ________ (位置，如between Venus and Mars) and is famous for ________ (特征，如its blue color/huge size).
It is ________ (比较级，如bigger/smaller) than Earth, with a diameter of about ________ (数字) kilometers. The average temperature there is ________ (数字) ℃, which is ________ (比较级，如hotter/colder) than that on Earth. What’s special is that ________ (独特特征，如it has beautiful rings/there is a lot of water).
Exploring this planet helps us ________ (探索意义，如learn about the origin of the solar system). I am curious about its secrets and hope that ________ (展望，如scientists can discover more about it soon). The universe is full of wonders, and we should keep exploring!
版本二：畅想未来太空生活
I often imagine living in space in the future. My dream is to live on ________ (行星名称) with my family. I think it will be a wonderful life.
In my dream, we will live in ________ (居住环境，如safe and comfortable houses) with ________ (设施，如air and water systems). We will travel by ________ (交通方式，如small rockets) and eat ________ (食物，如healthy and delicious space food). Every day, I will ________ (日常活动，如explore the planet with friends/observe the stars). The most interesting thing is that ________ (独特体验，如we can fly easily because of low gravity).
Living in space will teach me to ________ (收获，如cherish what we have/cooperate with others). I will study hard to become a(n) ________ (职业，如astronaut) and make my dream come true. Let’s look forward to the wonderful space life!

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