同学你好，该知识点来自沪江网校《2021考研蜕变计划标准班【政英+专业课1对1】（2年制）》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

正式信件
　　Beginning: Dear Sir or Madam
　　用Dear Sir or Madam开头
　　Stating the purpose: I am writing with regard to
　　用“I am writing with regard to”说明目的
　　Formal choice of language: due to, I intended, as a result of, caused me great inconvenience, compensate me, the additional flight
　　使用以下正式词汇：due to, I intended, as a result of, caused me great inconvenience, compensate me, the additional flight
　　No contractions: I am (not I'm)
　　不使用缩写：写成I am而不是I'm
　　Ending: I look forward to receiving your response. Yours faithfully,
　　结尾： I look forward to receiving your response. Yours faithfully,
　　Informal letter
　　非正式信件
　　Beginning: Dear John
　　用Dear John开头
　　Stating the purpose: I'm just writing to let you know that
　　用“ I'm just writing to let you know that”说明目的
　　Informal choice of language: As you know, Well, prices are crazy, on the bright side, it's got nice big windows, a lovely view, if you ever fancy, great to see you
　　使用以下非正式词汇：As you know, Well, prices are crazy, on the bright side, it's got nice big windows, a lovely view, if you ever fancy, great to see you
　　Use of contractions: I'm, we've, isn't, it's
　　使用缩写：I'm, we've, isn't, it's
　　Ending: Keep in touch! All the best
　　结尾：Keep in touch! All the best