告知信多是从个人角度出发，将对方想要了解的事情告诉对方，让对方知道。告知的内容涉及广泛：如计划安排类、课外活动类、招聘广告类、个人近况类、地点建筑类等。
篇章架构
靓句必背
【篇首句】
①I feel delighted that you are so interested in the speech contest, so I'm writing to give you a brief introduction of it.我很高兴你对这次演讲比赛感兴趣，所以我写信向你简要介绍一下它的情况。
②I feel greatly honoured to be asked to contact you, informing you of our arrangements.
我感到很荣幸受委托与你联系，告知你我们的安排。
③I would like to inform you of some details about the next class.我想告诉你关于下一节课的一些细节。
