（一）概 述
★ 风格：两篇写作，１篇是正式，１篇是非正式。
★ 体裁：
短篇：memo, note, email
长篇：fax, proposal , letter（诉信、道歉信、邀请信、询价信、感谢信等）, report （report on...、introduction、findings、conclusions、recommendations前面四个一个也不能少，至于最后的recommendations要看当时的题目要求）
（二）要 求
?the purpose of the correspondence
?references to previous communication
?factual details
?the feelings and attitude of the writer
?the level of formality
?the opening sentence
?the closing sentence
?paragraphing
?the desired outcome