考研英语二作文通常分为两个部分：小作文和大作文。下面我将分别介绍这两个部分的结构和写作要点。
小作文（Email Writing）
结构：
开头段：介绍背景信息和写信目的。
中间段：描述会议的具体内容，如会议主题、时间、内容等。
结尾段：期待对方出席并回复。
写作要点：
审题：确保不偏离题目要求。
清晰表达：邮件内容要条理清晰，语言简洁明了。
大作文（Essay Writing）
结构：
开头段：介绍图表主题和讨论的话题。
中间段：
第一句：论点句，总体介绍图表内容。
第二、三句：具体描述数据，可以分开描述占比多的和占比少的数据。
第二段：具体阐述内容，使用原因论证方法分析原因。
第三段：结论句总结论述内容，预测趋势，提出建议或呼吁。
写作要点：
审题：仔细阅读题目和图表，理解其含义。
数据描述：准确描述图表中的数据，并用适当的方式呈现。
论证方法：合理使用原因论证、例证等方法支持论点。
结论和建议：总结全文，给出合理的结论和建议。
范文示例
小作文（以邀请参加在线会议为例）：
```
Subject: Invitation to an online Meeting
Dear Jack,
I hope this email finds you well. We are organizing an online meeting to discuss the protection of ancient towns and buildings. We would be honored if you could join us.
The meeting will be held on [date] at [time] via Zoom. The agenda includes an introduction to the current status of the project, a discussion on the survey results, and a plan for our next steps. Your expertise in this field would be invaluable to us.
Please let us know if you can attend so we can prepare the necessary materials. We eagerly await your response and look forward to your valuable input.
Best regards,
[Your Name]
```
大作文（以柱状图——某大学生劳动实践课收获调查为例）：
```
The pie chart above clearly reveals the factors of students' concern when choosing restaurants in a certain city in 2017. Among all the five categories, features, service, and environment are the highest, accounting for 36.3%, 26.8%, and 23.8% respectively. On the contrary, the statistics of price and other factors take up merely 8.4% and 4.7% respectively, the lowest among the five groups.
The data suggests that customers place significant importance on the quality of features, service, and the overall environment of a restaurant. It is essential for restaurateurs to focus on these aspects to improve their competitiveness.
In conclusion, restaurateurs should prioritize enhancing the features of their establishment, improving service quality, and creating a pleasant dining environment to attract and retain customers.
```
以上是考研英语二作文的基本结构和写作要点。希望这些信息对你准备考试有所帮助。