英语三级考试（通常指大学英语三级或公共英语三级）的作文部分，主要考察考生用英语进行基本书面表达的能力。想在作文上拿分，得抓住三个关键：结构清晰、用词准确、少犯语法错误。下面直接上干货，说说怎么写能过关。
一、写作技巧
1. 审题是第一步，别跑题。
拿到题目，先花一两分钟看清楚要求。是写信？是写观点议论？还是描述图表或图画？把题目里的关键词圈出来，比如“advantages and disadvantages”（优缺点）、“your opinion”（你的观点）、“describe the chart”（描述图表）。确保你写的每一段都扣着这些关键词来。
2. 结构要简单明了，三段式最稳。
三级作文不要求复杂，一个清晰的三段式结构足够拿基础分。
3. 用你会用的词和句子，别逞强。
词汇量不大没关系，用对是关键。避免使用你完全没把握的高级词汇或复杂句型，用错了扣分更厉害。优先使用你熟悉的简单句（主语+谓语+宾语）和基本连接词，比如：
4. 检查语法和拼写。
写完一定要留出几分钟检查。重点看：第三人称单数动词加没加s（He works）；时态前后是否一致（通篇一般现在时或一般过去时）；名词单复数；还有基本的拼写。这些地方不出错，就能避免不必要的丢分。
二、范文解析
我们来看一个常见题型：议论文（表达观点）。
作文题目： Some people believe that living in a big city is better than living in the countryside. Do you agree or disagree? Give your reasons.
范文：
Living in a big city has many attractions, but I disagree that it is always better than living in the countryside. I believe countryside life has its own important advantages.
First, the countryside offers a cleaner and quieter environment. Air pollution is often a serious problem in big cities, while in the countryside, the air is fresh and the surroundings are peaceful. This is good for people's health and can reduce stress. Second, life in the countryside is usually less expensive. The cost of housing, food, and daily needs is often much lower compared to big cities. This means people can live a comfortable life without too much financial pressure.
Of course, big cities provide more job opportunities and modern facilities like hospitals and universities. However, the fast pace and high cost of city life can be stressful for many people.
In conclusion, while cities have their benefits, I think living in the countryside can provide a healthier, more peaceful, and more affordable life. Therefore, I disagree that city life is necessarily better.
解析：
1. 结构： 经典三段式。第一段直接表明观点（不同意）。第二段是主体，用“First, Second”清晰地列出两个理由（环境好、花费低），并分别简单解释。第三段总结，重申观点。
2. 语言： 用的都是基础词汇（attractions, environment, peaceful, expensive, opportunities）和简单句型。连接词（but, while, however, therefore）使用正确，使文章连贯。
3. 内容： 完全回应了题目要求（agree or disagree + reasons）。在主体段后，用“Of course…”简要承认了城市的好处，使论述显得更客观，但紧接着用“However”转折，依然强化自己的观点，这是很好的技巧。
记住，英语三级作文考的是你清晰表达基本思想的能力，不是文学创作。把题目要求看明白，用清晰的结构把你会的单词和句子组织好，写完认真检查，就能写出一篇合格的作文。