英语写作证言通常遵循以下结构和格式：

开头

使用正式的称呼，如 "To whom it may concern," 或 "Dear Sir/Madam,"。

正文

确认身份：明确指出被证明人的姓名和身份，例如 "We hereby confirm that Mr./Ms. （Your Name） is a staff member of our company."

描述职务或经历：详细说明被证明人在公司中的职务、工作内容或工作时间。例如 "He/She has worked in our company for （number of years） years, from （start date） to （end date）, and has demonstrated （specific skills or qualities）."

提供支持信息：可以包括任何支持被证明人陈述的额外信息，如奖项、成就或特别认可。

结尾

使用正式的结束语，如 "Sincerely," 或 "Best regards,"，后面跟一个逗号。

签名，如果是手写信件，可以亲笔签名；如果是电子邮件，可以使用电子签名或打印的名字。

附件

如果需要，可以附上相关的证明文件或附件，如简历、工作合同等。

```

[Your Name]

[Your Position]

[Company Name]

[Company Address]

[City, State, Zip Code]

[Email Address]

[Phone Number]

[Date]

To whom it may concern,

We hereby confirm that Mr./Ms. [Full Name] is a staff member of our company. He/She has worked with us for [number of years] years, from [start date] to [end date], and has consistently demonstrated [specific skills or qualities] that are essential to our organization.

Mr./Ms. [Full Name] has been an integral part of our team, contributing significantly to [specific projects or achievements]. His/Her expertise and dedication have earned him/her [any awards or recognitions].

We have no hesitation in recommending Mr./Ms. [Full Name] for any future endeavors and are confident in his/her abilities and commitment.

Sincerely,

[Your Name]

[Your Position]

[Company Name]

```

请根据实际情况调整上述模板中的内容，确保所有信息准确无误。