近年来，随着城市化进程的加快，交通问题日益突出。为了缓解这一难题，一种新型的出行方式——共享单车应运而生。它不仅方便了人们的日常出行，也对环保和绿色出行理念起到了积极的推动作用。2017年，共享单车成为社会热议的话题，也成为高考英语作文中的重要素材。

一、作文材料内容

以下是一段可能出现在2017年高考英语作文中的材料：

With the rapid development of cities, traffic problems have become more and more serious. In order to solve this issue, a new way of transportation—shared bicycles—has appeared. These bikes are available at any time and anywhere, making it very convenient for people to go out. At the same time, they help reduce pollution and promote a green lifestyle. However, there are also some problems, such as disorderly parking and damage to the bikes. How should we deal with these issues?

二、写作思路分析

这篇作文要求考生围绕“共享单车”这一话题展开讨论，可以从以下几个方面入手：

1. 介绍共享单车的出现背景与优势：如方便出行、环保节能、促进健康等。

2. 分析存在的问题：如乱停乱放、人为损坏、管理不善等。

3. 提出解决措施：如加强法律法规、提高市民素质、完善管理体系等。

4. 总结观点：强调共享单车的积极意义，并呼吁大家共同维护。

三、范文展示

Shared Bikes: A New Way of Green Life

In recent years, shared bikes have become a popular means of transportation in many cities. They not only provide convenience for people's daily travel but also help reduce environmental pollution. Compared with traditional cars or buses, shared bikes are more eco-friendly and can be used anytime and anywhere.

However, there are still some problems that need to be solved. For example, some people park the bikes in the wrong places, which causes inconvenience to others. Others even damage the bikes for fun, which leads to waste of resources. These behaviors not only affect the image of shared bikes but also make it difficult for them to develop sustainably.

To solve these problems, it is necessary for both the government and the public to take action. The government should improve management and set up more parking areas. Meanwhile, citizens should raise their awareness and use shared bikes responsibly. Only by working together can we ensure the healthy development of this new form of transportation.

In conclusion, shared bikes are a symbol of modern life and an important part of green travel. We should support and protect them so that they can bring more benefits to society.

四、写作建议

在写作过程中，要注意语言的准确性和表达的多样性。可以适当使用一些高级词汇和句型，如定语从句、状语从句、被动语态等，以提升文章的档次。同时，注意结构清晰，逻辑连贯，避免语法错误。

总之，2017年的高考英语作文中关于“共享单车”的题目，既贴近现实生活，又具有一定的思辨性，是考查学生综合语言运用能力的重要内容。希望广大考生能够认真准备，写出高质量的作文。