你的私信我看见了，可是我回不了，可能级别太低，谢谢你，我来回答问题了。

to whom it may concern, or dear mr or sbelse,

it is writing from........, and hope this email finds you well. i would like to call you attention to students physical condition for several reasons, and will be discussed with you in detail in the following part.

Many thanks for your time and your care as well. quick reponse will be highly appreciated.

thanks and best regards,

你骗人，写完不给钱！不给500也至少200呀，也算你守信用

你好，不存在任何诚信问题。请知悉论坛制度，另外，悬赏给出的金额，一经给出，只能追加不得降低和取消。待出现并设置最佳答案后，最佳答案提供者将获得悬赏全部金额。

这样呀，第一用不太知道，其实我也用不了那么多论坛币，只是为了下载点考试资料，那你就采纳了呗，要不你把中文给我，我给你写。好不？

I‘m a senior student from/in department of computer science. With great honor and sincerery, I write down the following words to present my strong recommendation on promoting physical education and paying more attention to students' physcial conditions.
Thank you for squeezing time to read my letter. I'll also appreciate your help if you can reply it as soon as possible.
楼主说要改得更高级，但实际上这个应该是书信或者email，所以我实际上是按我平常发邮件的经验把它尽量变得更通顺易懂简洁一点。望采纳。