heading信头：发信人地址，电话，email等联系方式。
inside addresss信内地址。收信人姓名，头衔，公司名称，地址。
salution称呼。信内地址下面，空两行。
body of letter 正文
complimentary close结束语。正文下面两行，从信纸中间写起。
signature签名
enclosure附件(简历或证明材料)
具体格式见下面的示例：
(your telephone number)
(your address)
the advertiser
(his address)
(date)
dear sir:
re: application for (the post)
—————————————————————-
....................( beginning of the letter)
.....................................(introducing yourself)
.....................................(about your personal ability)
....................(about the enclosure and other)
....................(ending)
yours faithfully
