一、主题词汇归纳·高频词汇必备
Keep ecosystems balanced
ecosystems: wetland, grassland, rainforest, desert, river, lake, coral reef (珊瑚礁), cave
ecological protection: reduce, reuse, recycle, control, create, allow, return, provide, plant, survive, green energy, send an alarm, forest guard, stop the logging, set up, natural park, research centre, thanks to, be home to, make use of, play a(n)... role, take action, make great efforts, with a better understanding of..., be completed with, have one’s way, carry into the future
human activities: explore, enjoy, use, change, understand, follow, guide, benefit, shortage, farming, build, car, boat, plane, road, noise, pollution, smog, mark, increase, rubbish, waste, cut down, take up, global warming, overfishing, greenhouse gas, dry up, grow plants for food, cut the wheat, live with, live by, no wonder, hurry to, pick up, take a(n)... interest in, long to do, move away from, let out, heat up
4. 教材原句: We must act NOW, or we will only see beautiful sea animals in museums.
仿写:我们必须节约水,否则很快就会用尽它。

5. 教材原句: Protecting pandas is undoubtedly helpful to the survival of a whole ecosystem.
仿写:节约用水无疑对我们的地球有益。

4. We must save water, or we will run out of it soon.
5. Saving water is undoubtedly helpful to our earth.

【分析】
本题为英语句子仿写题，需先分析原句结构，再结合中文意思匹配对应的英语表达。第4题原句结构为“We must + 动词短语，or + 一般将来时句子”，对应中文“必须节约水，否则用尽它”；第5题原句结构为“动名词短语作主语 + is + 副词 + helpful to + 宾语”，对应中文“节约用水对我们的地球有益”，需注意固定短语搭配，如“节约水”save water、“用尽”run out of、“对...有益”be helpful to等。
【解析】
第4题，根据原句“We must... or...”的结构，“节约水”译为save water，“用尽它”译为run out of it，结合时间状语“soon”，组成句子：We must save water, or we will run out of it soon。第5题，根据原句动名词作主语的结构，“节约用水”译为Saving water，“无疑”译为undoubtedly，“对我们的地球有益”译为helpful to our earth，组成句子：Saving water is undoubtedly helpful to our earth。
【答案】
4. We must save water, or we will run out of it soon.
5. Saving water is undoubtedly helpful to our earth.
【知识点】
英语句子仿写、动名词作主语、固定搭配运用
【点评】
本题考查基础英语句式结构和常用短语的运用，只要掌握原句结构及对应短语，即可准确完成仿写，属于基础题型。
【难度系数】
0.7

三、教材佳句仿写·高分句式训练
1. 教材原句:Without pollution, the natural wonders which have been hidden behind smog for years would appear again.
仿写:我们的家园正面临严重的空气污染,它可能会导致疾病和死亡。

2. 教材原句:Throughout history, humans have left so many marks on the earth, such as roads, farmlands and buildings.
仿写:我们可以做很多事情,比如离开房间时关掉所有的灯。

3. 教材原句:What a sad thing to think about!
仿写:这些活动都非常有意义!

1. Our home is facing serious air pollution which may lead to diseases and death.
2. There is a lot we can do such as turning off all the lights when we leave the room.
3. What meaningful activities they are!

【分析】本题为教材佳句仿写题，需先拆解原句的句式结构，再结合给定中文内容调整结构完成仿写。第1题原句含修饰名词的定语从句，仿写时需将“我们的家园正面临严重的空气污染”作为主句，“它可能会导致疾病和死亡”作为修饰“空气污染”的定语从句；第2题原句用such as引出举例内容，仿写时需对应“我们可以做很多事情”的结构，用such as引出具体例子；第3题原句是What引导的感叹句，仿写时需对应“这些活动都非常有意义”的内容，调整为符合结构的感叹句。
【解析】1. 结合定语从句结构，将中文内容译为：Our home is facing serious air pollution which may lead to diseases and death.
2. 结合such as举例结构，译为：There is a lot we can do such as turning off all the lights when we leave the room.
3. 结合What引导的感叹句结构，译为：What meaningful activities they are!
【答案】1. Our home is facing serious air pollution which may lead to diseases and death.
2. There is a lot we can do such as turning off all the lights when we leave the room.
3. What meaningful activities they are!
【知识点】定语从句；such as的用法；What感叹句
【点评】本题通过教材原句仿写训练，帮助学生巩固定语从句、举例表达、感叹句的核心句式，提升英语句式运用能力，属于基础的句式训练题。
【难度系数】0.5

四、典例剖析·主题写作行文指导
[2025成都武侯区二诊改编]2025年4月22日
世界地球日的主题是“Our Power, Our Planet”。
你校拟开展“Earth Day”英语项目活动。请用英语写一篇活动方案,参加“学校十佳”评选,并简要自评该方案。
语篇类型: 应用文 人称:以第一人称和第三人称为主
时态:一般现在时和一般将来时

注意:1.词数80~100;
2.文中不能出现真实姓名及学校名称。
参考词汇:项目活动project activity 手掌;掌部palm




Step 1 谋篇布局指导

第一段:指出地球上的环境问题
①Our Earth is facing many problems, such as…
②The blue planet which supports us all is crying out for help.
③Both animals and plants are suffering from global warming.
④Many… are disappearing because of…
第二段:从校园和个人方面详细介绍活动方案
①We live in one world and we share the only Earth.
②It’s our duty to…
③We need to take steps to…
④Our school can hold speech competitions regularly.
⑤It will be wonderful if we can put up posters about saving the earth.
⑥Our school should encourage students to…
⑦As for personal activities, students can…
第三段:自评方案
①I think all the activities are…
②It’s great to play a part in…
③It’s easy enough for students to…
④Every step counts and will make a difference.
Step 2 高阶表达应用
1. Our Earth is facing many problems.(增加举例说明)

2. We should encourage group activities such as picking up rubbish in the park.(用被动语态升格)

3. Students can choose to go to school by public transportation.(用定语从句说明好处/影响)

Step3 佳作展示评析
As we know, our Earth is facing many problems, such as water pollution, air pollution and soil pollution, which cause diseases and death¹. Besides, global warming leads to sea level rising rapidly. For us who are worried about the earth², there’s a lot that we can do³. Here are my suggestions for the project activity.
Firstly, our school can put up posters about saving water. The symbol is a palm followed by a drop of water⁴, meaning that we have to save every drop of water⁵. Secondly, group activities such as picking up rubbish in the park should be encouraged. As for⁶ personal activities, students can choose to go to school by public transportation, which can be low-carbon and environmentally friendly⁷.
I think all the activities are very meaningful. Students can do them easily and make a difference.
①②③⑦处定语从句使用恰当,达到学以致用的目的。
④过去分词短语作后置定语,⑤现在分词短语作伴随状语,进一步说明图片内容和意义,其中that引导宾语从句,提升文章得分档次。
⑥介词短语引出新的活动建议,与上文衔接恰当自然。

1. Our Earth is facing many problems, such as water pollution, air pollution and soil pollution.
2. Group activities such as picking up rubbish in the park should be encouraged.
3. Students can choose to go to school by public transportation, which can be low-carbon and environmentally friendly.

【分析】
本题是英语应用文写作任务，要求撰写“Earth Day”项目活动方案并自评，需遵循三段式结构：①第一段点明地球面临的环境问题，需举例拓展；②第二段从校园、个人层面设计活动方案，需运用被动语态、定语从句等高阶表达；③第三段自评方案的意义与可行性。写作时需注意时态（一般现在时、一般将来时）、人称（第一/第三人称）、词数80-100，不得出现真实信息。
【解析】
1. 第一段：通过列举water pollution, air pollution, soil pollution拓展环境问题，符合“点明环境问题”的要求；2. 第二段：将主动表达“We should encourage group activities such as picking up rubbish in the park”升格为被动句“Group activities such as picking up rubbish in the park should be encouraged”，提升句式多样性；3. 第二段个人活动部分，用定语从句“which can be low-carbon and environmentally friendly”说明乘坐公共交通的优势，丰富内容；4. 第三段从活动的意义、学生参与的可行性展开自评，契合任务要求。
【答案】
1. Our Earth is facing many problems, such as water pollution, air pollution and soil pollution.
2. Group activities such as picking up rubbish in the park should be encouraged.
3. Students can choose to go to school by public transportation, which can be low-carbon and environmentally friendly.
【知识点】
英语应用文写作、定语从句、被动语态
【点评】
本题为英语写作典例，清晰指导学生掌握活动方案类应用文的谋篇布局（三段式结构）与高阶表达技巧（被动语态、定语从句），贴合初中英语写作的考查要求，帮助学生提升写作得分档次。
【难度系数】
0.6