求助信是指写信人就某一个问题向收信人寻求帮助，希望收信人就提出的问题提供帮助或给出针对性的解决方法。求助信要简明扼要，语气委婉、真诚。
篇章架构
靓句必背
【篇首句】
①I'm writing to you to ask whether you could do me a favor.我写信是想问您能否帮助我。
②I'm sorry to bother you, but I have some difficulties here and need your help.很抱歉打扰您，但我在此有些困难需要得到您的帮助。
③I have some difficulty in English pronunciation, which bothers me a lot. So I have no choice but to turn to you for help.
我在英语发音方面有一些困难，这很困扰我。所以我别无选择只能向您求助。
