在备战2019年英语考研作文时，掌握一些实用技巧和参考经典范文是非常有帮助的。以下，我将从几个方面详细解析实用技巧，并展示一些经典范文，帮助考生在考试中取得好成绩。
一、实用技巧解析
1. 确定主题
在动笔之前，首先要明确作文的主题。这可以通过阅读题目、审题来实现。明确主题有助于我们围绕中心思想展开论述。
2. 构思大纲
在动笔之前，构思一个清晰的大纲。大纲应包括引言、主体和结论三个部分。在主体部分，可按照时间、空间、重要性等顺序展开论述。
3. 丰富词汇
积累丰富的词汇是写好作文的基础。在备考过程中，要注重积累词汇，尤其是与作文主题相关的词汇。同时，要学会运用同义词、近义词等，使文章更加生动。
4. 语法正确
语法是作文评分的重要标准之一。在备考过程中，要熟练掌握英语语法，避免出现低级错误。此外，要学会运用各种句型，使文章结构更加丰富。
5. 灵活运用写作技巧
在写作过程中，要灵活运用各种写作技巧，如举例、对比、转折等。这些技巧可以使文章更加有说服力。
6. 注意段落结构
一篇优秀的作文，段落结构要清晰。每个段落都要有明确的主题句，并围绕主题句展开论述。段落之间要有过渡，使文章连贯。
二、经典范文展示
以下是一篇关于环境保护的经典范文：
The Importance of Environmental Protection
In recent years, environmental protection has become a hot topic worldwide. With the rapid development of industry and technology, the environment has been seriously damaged. As a result, many people are suffering from various diseases caused by pollution. Therefore, it is of great importance to protect our environment.
Firstly, environmental protection is essential for our health. Air and water pollution can lead to respiratory and cardiovascular diseases. In addition, the excessive use of pesticides in agriculture can cause food contamination, which is harmful to our health.
Secondly, environmental protection is crucial for the sustainable development of our society. Natural resources are finite, and if we continue to exploit them without considering the consequences, we will face severe resource depletion in the future. In addition, environmental degradation can lead to natural disasters, such as floods, droughts, and earthquakes, which will pose a great threat to our lives.
To protect our environment, we should take the following measures. Firstly, we should raise public awareness of environmental protection. Secondly, we should strengthen environmental regulations and enforce them strictly. Finally, we should develop and promote clean energy and green technology.
In conclusion, environmental protection is a long-term and arduous task. It requires the joint efforts of governments, organizations, and individuals. Only by protecting our environment can we create a better future for ourselves and our descendants.
通过以上范文，我们可以看到作者在引言部分提出了环境保护的重要性，然后在主体部分从健康和可持续发展两个方面进行了论述，最后在结论部分总结了全文。这种结构清晰、论述有力的写作方式值得借鉴。
在备考过程中，多阅读经典范文，学习其中的写作技巧和表达方式，有助于提高自己的写作水平。同时，结合实际生活，关注社会热点问题，使自己的作文更具深度和广度。