大学英语B级作文通常要求学生在30分钟内写一篇至少80词的作文，内容通常围绕日常生活、社会现象或个人经历等主题。以下是一些作文题目和写作指导的示例：
作文题目示例：
介绍一个地方 描述一个你去过的地方，包括住宿、饮食和观光活动。
保持健康
讨论保持健康的重要性以及可以采取的一些健康习惯。
公共场合的不良行为
描述在公共场合观察到的不良行为及其影响。
金钱问题
讨论金钱在个人生活中的重要性以及理财的方法。
了解朋友近况
写一封信给朋友，询问他们的近况并邀请他们来访。
写作指导：
审题： 仔细阅读题目要求，确保理解题意。 组织结构
内容充实：确保内容符合题目要求，并且有足够的细节支持你的观点。
语言准确：使用恰当的词汇和语法结构，避免语法错误。
逻辑清晰：确保文章逻辑连贯，表达清晰。
范文示例：
介绍一个地方
```
Dear Susan,
How are you these days？ I'm going to Guilin, your hometown. Could you tell me about where to stay, where to eat and what to see in Guilin？ I've been told that Yangshuo is the most beautiful place in Guilin, and there are lots of activities you can do. I feel very excited about it!
```
保持健康
```
Nowadays, more and more people know the importance of keeping healthy. Without a healthy body, they can't do their best in work and study. So it's necessary to keep a good habit of exercising every day. Eating more fruits and vegetables is also very important.
```
公共场合的不良行为
```
Although bad manners in public are condemned widely, they are still not uncommon in our life. For instance, some people can litter in public places. This not only pollutes our environment but also shows a lack of respect for others.
```
金钱问题
```
My hometown is Nanhui. We have settled down here since my grandfather was a young man. We have learned to manage money carefully. Saving some money each month is a good habit.
```
了解朋友近况
```
Dear Sam,
It's lovely to write to you. I haven't seen you since we graduated. I was told that you are in New York now. What have you been doing these years？ I would like to know more about your life there.
```
以上是几个作文题目和写作指导的示例，你可以根据这些示例来准备自己的作文。