留学英语日记通常遵循以下格式：
日期：
在日记的左上角，写上当天的日期，格式通常是月/日/年，例如：January 15, 2024。
星期：
在日期之后，写上星期几，例如：Wednesday。
天气：
在右上角，描述当天的天气情况，例如：Sunny, Cloudy, Rainy。
正文：
在日期和天气之下，另起一行开始写日记的正文。正文应选择当天有意义或感受最深的事情进行记录，内容可以包括你观察到的事物、你的感受、思考或计划等。
下面是一个简单的留学英语日记范文：
```
January 15, 2024, Wednesday
Sunny
Today was a productive day. I attended my first English class at the university and was introduced to some new concepts. The professor was very engaging and I found the lesson quite fascinating. After class, I had a coffee with a fellow student from my program and we discussed our plans for the weekend. I'm excited to explore the city more and practice my English outside of class.
```
记得在写作时保持语言清晰、连贯，并尽量使用过去时态来描述当天发生的事件。