Unit 4 Life on Mars 作文学案 2025-2026学年译林版英语九年级下册

2026-01-22
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摘要:

该初中英语学案围绕“Life on Mars”主题写作展开,核心知识点包括火星生活的环境、设施、活动及注意事项,语法重点为简单句与复合句转换。课堂通过写作导引明确“人与未来”主题范畴及写作角度,结合范文、译文及含思维导图的拓展练习,搭建从基础描述到利弊分析、畅想的学习支架,帮助学生系统掌握写作要点。 该资料特色显著,通过亮点词块、高分句子及语法转换示例提升语言能力,借助思维导图和逻辑衔接词培养思维品质,配套拓展习题(邮件、征文)强化学习能力。范文与译文对照清晰,助力学生构建知识体系,有效提升英语表达与自主学习效率。

内容正文:

Unit 4 Life on Mars 作文学案 【写作导引】 本单元以“Life on Mars”为话题,属于“人与未来”主题范畴中“太空探索与未来生活”这一主题群。单元核心聚焦“用英语畅想火星生活、描述其优势与挑战,运用简单句与复合句的转换(状语从句、宾语从句、定语从句转简单句),培养想象与逻辑表达能力”,常见写作角度包括:① 撰写火星生活指南;② 探讨火星生活的利弊;③ 畅想未来火星旅行;④ 对比地球与火星生活差异。单元语法重点为 简单句与复合句的转换,思维技能侧重“按生活场景梳理火星生活细节,结合科学常识合理想象”,阅读策略聚焦“自我评价(Study skills),助力自主学习提升”。 【单元话题】 “星际畅想,火星生活”。请用英语写一篇火星生活指南,介绍火星的环境、生活设施、日常活动及注意事项,词数80左右,题目为“A Guide to Living on Mars”。 ________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 【范文】 A Guide to Living on Mars Living on Mars is an exciting but challenging experience. Here’s a quick guide for you. Mars has only three-eighths of Earth’s gravity, so you need to wear special boots to walk steadily. Food is usually in the form of nutrient pills, though dried fruits are also available. You’ll live in houses with huge rooms and study at online schools via an interplanetary network. The transport system is clean—flying cars produce no pollution. Remember to carry an air tank outdoors, as Mars lacks enough oxygen. With these tips, you’ll adapt to Mars life soon and enjoy its unique charm! 【译文】 火星生活指南 在火星生活是一段令人兴奋但充满挑战的经历,以下是一份快速指南供你参考。 火星的重力仅为地球的八分之三,因此你需要穿特制靴子才能平稳行走。食物通常以营养药片的形式存在,但也能买到干果。你会住在带有宽敞房间的房子里,通过星际网络在在线学校学习。交通系统十分环保——飞行汽车不会产生污染。记得在户外携带氧气罐,因为火星缺乏足够的氧气。 有了这些建议,你很快就能适应火星生活,享受它独特的魅力! 亮点词块 1.three-eighths of Earth’s gravity 地球重力的八分之三 2.special boots 特制靴子 3.in the form of nutrient pills 以营养药片的形式 4.dried fruits 干果 5.interplanetary network 星际网络 6.flying cars 飞行汽车 7.produce no pollution 不产生污染 8.air tank 氧气罐 9.lack enough oxygen 缺乏足够氧气 10.adapt to 适应 11.unique charm 独特魅力 高分句子 1.Mars has only three-eighths of Earth’s gravity, so you need to wear special boots to walk steadily.(结合科学常识,逻辑清晰,贴合单元主题) 2.You’ll live in houses with huge rooms and study at online schools via an interplanetary network.(用介词短语替代定语从句,符合单元语法重点) 3.Remember to carry an air tank outdoors, as Mars lacks enough oxygen.(用简单句表达注意事项,简洁明了) 【拓展1】 你的笔友 Tom 对火星探索很感兴趣,想了解火星生活的利弊。请你写一封邮件,向他介绍火星生活的优势与挑战,词数不少于60。 Dear Tom, I’m glad you’re interested in life on Mars. It’s a topic full of imagination—there are both advantages and challenges. ________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Yours, Li Hua 【拓展1范文】 Dear Tom, I’m glad you’re interested in life on Mars. It’s a topic full of imagination—there are both advantages and challenges. The best part is that Mars is clean and uncrowded, with more space for everyone. Robots will do most housework, so you’ll have plenty of time to relax. However, challenges exist too. The gravity is much lower, so you might feel dizzy at first. Food isn’t as tasty as on Earth, and you’ll rely on oxygen tanks when going out. What’s more, it’s far from Earth, so visiting family is difficult. Despite these challenges, Mars life is still attractive. I hope humans can make it a livable planet soon! Yours, Li Hua 【拓展1译文】 亲爱的汤姆: 很高兴你对火星生活感兴趣。这是一个充满想象力的话题——既有优势也有挑战。 最棒的一点是火星干净且不拥挤,每个人都能拥有更多空间。机器人会承担大部分家务,所以你会有充足的时间放松。不过挑战也真实存在:火星重力低得多,一开始你可能会头晕;食物不如地球上的美味,外出时还得依赖氧气罐;而且火星距离地球遥远,探望家人十分困难。 尽管有这些挑战,火星生活依然充满吸引力,希望人类很快能把它变成宜居星球! 你的, 李华 【拓展2】 假设你参加“未来太空生活”征文比赛,请根据以下思维导图提示,写一篇题目为“My Dream Life on Mars”的短文,词数80左右,开头已给出。 My Dream Life on Mars 1. 居住(宽敞房屋,智能设备)2. 学习(在线学校,e-teachers)3. 活动(低重力运动,星际旅行)4. 感受(自由、新奇、充满希望) My Dream Life on Mars I have always dreamed of living on Mars. In my imagination, life there is wonderful and full of surprises. ________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 【拓展2范文】 My Dream Life on Mars I have always dreamed of living on Mars. In my imagination, life there is wonderful and full of surprises. We’ll live in spacious houses with smart devices that control temperature and lighting. Studying is easy—each student has a computer connected to an interplanetary network, and e-teachers are always ready to help. In our free time, we can play low-gravity basketball or take short trips to Mars’ moons. The air is fresh, and there’s no pollution. Every day feels like an adventure. This dream life shows humanity’s desire for exploration. I hope one day it will come true! 【拓展2译文】 我梦想中的火星生活 我一直梦想着住在火星上。在我的想象中,那里的生活美好而充满惊喜。 我们会住在宽敞的房子里,智能设备控制着温度和照明。学习很轻松——每个学生都有一台连接星际网络的电脑,电子老师随时提供帮助。空闲时,我们可以打低重力篮球,或短途旅行去火星的卫星。空气清新,没有污染,每一天都像一场冒险。 这种梦想生活体现了人类对探索的渴望,希望有一天它能成为现实! 本话题作文的一些实用短语与句型积累 一、核心主题词汇 1.火星与太空相关(单元重点) · 星球与环境:Mars 火星;gravity 重力;oxygen 氧气;planet 行星;interplanetary network 星际网络;spacious 宽敞的;uncrowded 不拥挤的;pollution-free 无污染的 · 生活设施:flying cars 飞行汽车;air tank 氧气罐;smart devices 智能设备;online schools 在线学校;e-teachers 电子老师;nutrient pills 营养药片;dried food 干粮 · 相关表达:adapt to 适应;livable planet 宜居星球;space travel 太空旅行;low-gravity 低重力的;interstellar 星际的;exploration 探索;challenge 挑战;advantage 优势 1. 语法相关(单元重点) · 状语从句转简单句:用 at the age of/because of/without 替代从句 · 例句:People can jump higher because of low gravity.(替代 because gravity is low) · 宾语从句转简单句:用 of/about 替代从句 · 例句:I’m unsure about the living conditions on Mars.(替代 I’m unsure what the living conditions on Mars are like) · 定语从句转简单句:用 with/in 替代从句 · 例句:We’ll live in houses with huge rooms.(替代 houses which have huge rooms) 1. 生活与活动相关(单元核心) · 日常活动:study at online schools 在线学习;play low-gravity sports 进行低重力运动;take interstellar trips 进行星际旅行;operate smart devices 操作智能设备;carry air tanks 携带氧气罐 · 感受表达:exciting 令人兴奋的;challenging 有挑战性的;wonderful 美好的;full of surprises 充满惊喜;unique 独特的;adventurous 冒险的;hopeful 充满希望的 1. 逻辑衔接相关(单元基础) · 描述优势:the best part is 最棒的是;moreover 此外;what’s more 而且;besides 另外 · 描述挑战:however 然而;despite 尽管;though 虽然;exist 存在;difficult 困难的 · 总结:in short 总之;all in all 总而言之;in a word 一句话;come true 实现 二、实用句型积累 1.介绍火星生活(贴合单元核心) · Life on Mars is both [adj.] and [adj.], with [feature]. · Mars has [feature], so we need to [action]. · You’ll [activity] in [place] via [tool/network]. · The biggest advantage of living on Mars is [point], but the main challenge is [point]. 1. 语法句型运用(贴合单元语法) · Without enough oxygen, humans cannot survive on Mars.(用介词短语替代条件状语从句) · I’m curious about the transport system on Mars.(用介词替代宾语从句) · Astronauts in special suits can stay outdoors for hours.(用介词短语替代定语从句) · People move more easily on Mars because of low gravity.(用介词短语替代原因状语从句) 1. 描述利弊(贴合单元主题) · On one hand, Mars life offers [advantage]; on the other hand, it brings [challenge]. · The good thing about living on Mars is that [point]. · Despite the challenges like [example], Mars life is still attractive. · We can enjoy [benefit] on Mars, but we have to face [problem]. 1. 畅想与希望(贴合单元内涵) · I hope that humans can [action] on Mars in the future. · It’s my dream to [action] on another planet like Mars. · With the development of technology, [dream] will come true soon. · Mars may become a livable planet for humans to start a new life. 三、基础句式与衔接 1.核心语法+火星描述(单元核心语法) · We’ll use flying cars for transport, which produce no pollution. → We’ll use flying cars for transport with no pollution. 我们会使用飞行汽车出行,它们不会产生污染。 · People feel uncomfortable because the spacecraft travels too fast. → People feel uncomfortable because of the spacecraft’s high speed. 由于飞船速度太快,人们会感到不适。 1. 火星生活+衔接词(单元拓展) · First, Mars has more space for people to live in. Second, robots do most housework, saving time for hobbies. Finally, the environment is clean and pollution-free. 首先,火星有更多居住空间;其次,机器人承担大部分家务,为爱好节省时间;最后,环境干净无污染。 · Living on Mars is exciting because of low-gravity sports and interstellar trips. However, it’s challenging to get used to the gravity and lack of fresh food. 火星生活很令人兴奋,因为有低重力运动和星际旅行;不过,适应重力和缺乏新鲜食物也很有挑战性。 1. 逻辑衔接词(简单基础) · 优势:the best part、moreover、what’s more、besides · 挑战:however、though、despite、in spite of · 并列:and、not only...but also...、both...and... · 因果:because、so、as a result、because of · 总结:in short、all in all、in a word、finally 学科网(北京)股份有限公司 $

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Unit 4 Life on Mars 作文学案 2025-2026学年译林版英语九年级下册
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Unit 4 Life on Mars 作文学案 2025-2026学年译林版英语九年级下册
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