英语通知的开头通常遵循以下格式：

标题：

标题应居中放置在通知正文上方，通常使用大写的“NOTICE”字样。

发文单位：

发文单位名称可以写在标题上方或正文的右下角。

正文开头：

正文的开头应简洁明了地交代通知的事项，包括时间（when）、地点（where）、人物（who）和事件（what）。

日期：

日期通常写在正文左下角的日期栏内。

```

NOTICE

The Student Union has recently agreed to set up an English Club. It aims to provide a platform for students to improve their English language skills and promote cultural exchanges.

All students are invited to join the club. The first meeting will be held on [date] at [time] in [location]. Please bring your suggestions and any materials you think may be helpful for the club's activities.

We look forward to your active participation.

Student Union

[Date]

```

在这个示例中，标题“NOTICE”居中，发文单位“Student Union”写在标题下方，正文开头简洁地介绍了通知的内容和目的，日期则写在正文左下角的日期栏内。