十二、书面表达。（共6分）
Tim 了解到地球正面临环境污染等问题，他想写一份倡议书。请你以“Help the Earth”为题，参考思维导图，帮他写一写。不少于50词。
要点:1. 描述如今地球的情况;2. 给出至少三条建议。
Help the Earth
In the past, the Earth was clean and beautiful. But now
it is dirty and sick. People throw lots of rubbish into rivers, so the water gets very dirty. We cut down too many trees and use too many plastic bags every day.
We must do something to save our Earth. First, we should stop throwing rubbish into rivers and put waste into recycling bins.
Second, we should plant more trees and stop cutting down trees.
Third, we'd better not use plastic bags when we go shopping. We can also walk or ride bikes instead of driving cars.
Small actions can help our Earth a lot.
答案：One possible version:
Help the Earth
In the past, the Earth was clean and beautiful. But now it is dirty and sick. People throw lots of rubbish into rivers, so the water gets very dirty. We cut down too many trees and use too many plastic bags every day.
We must do something to save our Earth. First, we should stop throwing rubbish into rivers and put waste into recycling bins. Second, we should plant more trees and stop cutting down trees. Third, we'd better not use plastic bags when we go shopping. We can also walk or ride bikes instead of driving cars. Small actions can help our Earth a lot.
解析：
【分析】首先明确题目要求：以“Help the Earth”为题写倡议书，需包含两部分内容，一是描述地球现状，二是给出至少三条保护地球的建议，且要参考思维导图（左侧为破坏地球的行为：乱扔垃圾、砍伐树木、使用塑料袋；右侧为保护地球的行为：投放垃圾至回收箱、种植树木、使用环保袋）。解题思路：第一步，结合思维导图左侧内容，用简单语句描述地球如今因人类破坏变得脏乱、树木减少、塑料污染严重的现状；第二步，对应思维导图右侧内容，提炼出三条以上具体的保护建议，语言要通顺，符合倡议书的语气，满足不少于50词的要求。
【解析】按照题目要求，先写地球现状：过去地球干净美丽，现在却因人类乱扔垃圾、砍伐树木、使用过多塑料袋变得脏乱；再写保护建议：一是不乱扔垃圾，将垃圾放入回收箱；二是多植树，停止砍伐树木；三是购物时不用塑料袋，改用环保袋，还可补充绿色出行的建议，最后点明小行动对保护地球的意义，确保内容紧扣要点，语言流畅。
【答案】Help the Earth
In the past, the Earth was clean and beautiful. But now it is dirty and sick. People throw lots of rubbish into rivers, so the water gets very dirty. We cut down too many trees and use too many plastic bags every day.
We must do something to save our Earth. First, we should stop throwing rubbish into rivers and put waste into recycling bins. Second, we should plant more trees and stop cutting down trees. Third, we'd better not use plastic bags when we go shopping. We can also walk or ride bikes instead of driving cars. Small actions can help our Earth a lot.
【知识点】英语书面表达、环境保护主题写作
【点评】本题结合环保主题与思维导图，考察学生的英语写作能力，要求紧扣要点，合理运用思维导图信息，语言通顺，符合倡议书文体要求，贴近生活实际，易于学生发挥。
【难度系数】0.6
