一、写作技巧
1. 熟悉题型和评分标准
2017年英语四级写作部分通常包括两种题型：看图作文和议论文。在准备写作时，首先要熟悉这两种题型的特点和要求，以及评分标准。了解评分标准有助于你针对性地提高写作水平。
2. 提高词汇和语法水平
词汇和语法是写作的基础。为了提高写作水平，你需要积累丰富的词汇和掌握正确的语法知识。可以通过阅读英语文章、背诵单词和练习语法题来提高。
3. 培养写作思维
写作不仅需要词汇和语法，还需要良好的思维。在写作过程中，要学会如何组织思路，如何展开论述，以及如何运用各种写作技巧。
4. 多练习，多总结
写作能力的提高需要大量的练习。在练习过程中，要注重总结经验教训，不断优化自己的写作方法。
二、高分范文解析
以下是一篇2017年英语四级写作高分范文，供大家参考：
范文：
Title: The Importance of Environmental Protection
It is universally acknowledged that environmental protection is of great importance. In recent years, the problem of environmental pollution has become increasingly serious, which has attracted widespread attention from the public.
Firstly, environmental pollution has a direct impact on human health. Air and water pollution can lead to various diseases, such as respiratory diseases and cancer. Secondly, environmental pollution can cause natural disasters, such as floods, droughts, and earthquakes. These disasters can cause great damage to human life and property. Finally, environmental pollution can lead to the loss of biodiversity, which is crucial for the sustainable development of our planet.
To address this problem, we should take the following measures. Firstly, the government should strengthen environmental regulations and strictly enforce them. Secondly, enterprises should adopt cleaner production technologies and reduce their emissions. Thirdly, individuals should raise their awareness of environmental protection and take actions to protect the environment, such as reducing energy consumption and waste.
In conclusion, environmental protection is a global issue that requires the joint efforts of governments, enterprises, and individuals. Only by working together can we create a better future for ourselves and our descendants.
解析：
开头：文章开头简洁明了，直接点明主题，即环境保护的重要性。
正文：正文部分从三个方面论述了环境污染的危害，使论述更加全面。
结尾：结尾部分总结了全文，强调了环境保护的紧迫性和重要性，并提出了应对措施。
语言表达：文章语言流畅，用词准确，句式丰富，体现了较高的英语水平。
结构：文章结构清晰，层次分明，使读者易于理解。
通过以上范文解析，相信大家对2017年英语四级写作技巧有了更深入的了解。在备考过程中，要注重积累词汇、语法和写作技巧，多练习、多总结，相信你们一定能取得优异的成绩。