我叫 Steve ，在操场丢了一串钥匙，请打电话 86856034 找我，本人将万分感谢。
      〔范文展示〕
lost
      May 4， 2004
      I lost a set of keys on the playground when I was playing basketball yesterday. My name is Steve. Please call 86856034.
      Steve
      或者：
      Lost
      A set of keys was lost on the playground.
      My name is Steve.