英國留學時寫假條，你可以遵循以下格式和步驟：

格式

To：寫上收件人的姓名和職位。

From：寫上請假人的姓名和職位。

Date：寫上寫假條的日期。

Subject：寫上請假字樣。

內容

開門見山，有禮貌地提出請假請求。

明確請假的日期，并說明請假的原因。

盡可能表示對由此帶來的不便表示歉意。

示例

```

To: [Manager's Name], Manager

From: [Your Name], [Your Department]

Date: [Today's Date]

Subject: Request for Leave

Dear [Manager's Name],

I am writing to request leave from [Date of Leave] to [Date of Return] due to [Personal/Medical Reason]. I have attached a medical certificate to support my leave request.

I understand the importance of my duties during my absence and I will ensure that all necessary tasks are completed before my leave.

Please let me know if any arrangements need to be made to cover my responsibilities during this time.

Thank you for your understanding.

Sincerely,

[Your Name]

```

請根據實際情況調整上述模板中的內容。記得在提交前檢查語法和拼寫錯誤，保持禮貌和專業(yè)的語氣。