英语书信格式通常包括以下几个部分：
1. 信头（Heading）：包括寄信人的地址、日期。
2. 称呼（Salutation）：写信给特定的收件人时，用此称呼。
3. 正文（Body）：信件的主要内容，包括问候、主体段落和结束语。
4. 结束语（Closing）：表示礼貌和感谢的短语，如“此致敬礼”或“祝好”。
5. 签名（Signature）：写信人的姓名。
下面是一个英语书信的范文：
Dear [收件人姓名],
I hope this letter finds you well. I am writing to express my gratitude for the help you provided me with during my recent visit to your office.
Your guidance and support were essential in allowing me to complete my project on time and within budget. Your knowledge and experience in the field were truly impressive, and I feel fortunate to have had the opportunity to work with you.
I also want to thank you for your patience and understanding during the process. It was clear that you cared deeply about the success of my project, and I appreciate your willingness to go above and beyond to ensure that I had everything I needed to succeed.
I am looking forward to the opportunity to work with you again in the future. If there is anything I can do to support you or your team in the meantime, please don't hesitate to let me know.
Best regards,
[写信人姓名]
[日期]
