应征函要发挥最大的效果，语气必须肯定、自信、有创意而不过份夸张，如能事先洞察雇主的喜好，或其他人格特性，根据物以类聚的原理，应征函若能配合雇主的特性，求职的人一定可以比其他人占上风，获得面谈的机会。 比较下列各句语气上有何不同：
1．I think that I should probably make a good bookkeeper for you. 我想我可能成为贵公司的好簿记号。
2．I am confident that my experience and references will show you that I can fulfill the particular requirements of your bookkeeping position. 我想信我的经验和推荐人可以告诉您，我能够符合贵公司簿记员一职的特定需要。
3．I recently completed a course in filing at the Crosby School of Business. I am competent not only to install a filing system that will fulfill the needs of your organization, but I am also well qualified to operate it efficiently. 最近我在克洛斯比商业补习班读完一门档案处理的课程，我自信不仅可以设置一套档案人类系统符合您的要求，而且可以有效地操作。
4．I feel quite certain that as a result of the course in filing which I completed at the Crosby School of Business, I can install and operate efficiently a filing system for your organization. 我相信在克洛斯比商业实习班修完一门课后，我能够替贵公司设置并且操作一套档案分类系统。
第一句显得语气太弱，写信的人有点羞怯的样子。第二句有特殊风格，第三句太过自信，第四句，作者表示谦虚。