信函写作：称呼、正文、落款
1、审题—-判断是个人书信&事务公函
决定：
语域使用：正式：使用礼貌表达，不用缩略语(对公)
半正式：可以使用缩略和口语表达(对私)
非正式：(一般不考)——it depends
呼语： 特定的写信对象：dear xx
不明确收信人：dear sir/madam， or to whom it may concern
2、正文
三段(8句)：写作目的段、细化段、感谢或者期待。
3、各种信函内容安排
8)感谢信
a.基本结构
dear…，
表示感谢;
yours sincerely，
li ming
b.范文解析：
dear jim，
i am writing to express my heartfelt gratitude. i am referring to that unfortunate accident the other day， when i was knocked off my bike by a taxi.
if it had not been for your timely assistance in giving me first aid， i fear that the consequences might have been much more serious. everyone agrees that it was your quick-witted response in that emergency that has led to this satisfactory outcome.
although nowadays people in mounting numbers talk about the need to be unselfish， we see very few people practice what they preach. if there were more people like you， this world would be a much nicer place.
yours sincerely，
li ming
c.感谢信框架(重要)
dear jim，
if it had not been for your timely…， i fear that agrees that it quick-witted a much nicer place.
(或回报，再次感谢)
yours sincerely，
li ming
