在考研英语答题卡上书写作文，以下是一些建议的规范与示范：
1. 卷面整洁：保持卷面干净，字迹清晰，避免涂改。
2. 段落分明：每段开头空一格，段落之间留适当间距，使文章结构清晰。
3. 字体规范：使用规定的字体，如宋体或楷体，字号通常为四号。
4. 行距适中：行距一般设置为1.5倍行距，保证作文易于阅读。
5. 字数要求：根据题目要求，确保字数符合要求，一般建议在150-200字之间。
6. 开头引入：开头段简要介绍背景或引出主题，通常不超过三句话。
7. 主体展开：主体段落围绕主题展开论述，每段开头可使用主题句，然后进行详细阐述。
8. 结尾总结：结尾段总结全文，重申观点，并可以提出建议或展望。
以下是一篇考研英语作文的示范：
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开头引入：
In recent years, the issue of online shopping has become increasingly popular. With the rapid development of the internet, more and more people are choosing to make purchases online.
主体展开：
There are several reasons for this phenomenon. Firstly, online shopping offers convenience. Consumers can shop from the comfort of their homes without the need to travel to physical stores. Secondly, online platforms often provide better prices and discounts compared to traditional retailers. Lastly, the variety of products available online is much wider than in physical stores.
结尾总结：
In conclusion, online shopping has become an integral part of modern life. It is not only convenient but also cost-effective. However, consumers should be cautious when shopping online to ensure their safety and privacy.
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