2021年考研英语一作文解析如下：
今年的考研英语一作文题目主要围绕“网络教育”这一主题展开。题目要求考生写一封邮件给朋友，分享你对网络教育的看法，并询问对方对此的看法。
作文结构建议如下：
1. 开头段：自我介绍，说明写信目的。
例：“Dear [Friend's Name], I hope this email finds you well. I am writing to share my thoughts on online education and would love to hear yours as well.”
2. 主体段一：阐述自己对网络教育的看法。
例：“In my opinion, online education has brought about significant changes in the way we learn. Firstly, it offers flexibility, allowing students to study at their own pace and convenience. Secondly, it provides access to a wide range of resources and experts from all over the world, enhancing the learning experience.”
3. 主体段二：列举网络教育的优点。
例：“Moreover, online education is cost-effective as it eliminates the need for commuting and physical classroom space. Additionally, it promotes lifelong learning by enabling individuals to pursue further education even after they have entered the workforce.”
4. 主体段三：询问对方的观点。
例：“I am curious to know your perspective on online education. Have you ever taken any online courses? What do you think about the advantages and disadvantages of this mode of learning?”
5. 结尾段：表达期待对方回复的愿望。
例：“I am looking forward to your response and would appreciate any suggestions or experiences you might share. Best regards, [Your Name].”
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