道歉信：
Dear...
I am delighted to learn that.....Unfortunately, I have some imperative reasons obliging me not able to......I am writing this letter to send my sincere apology to you.
开宗明义，先写你很开心的事情，比如收到对方的邀请，比如得知你被对方公司录取，再一转，说你不能赴约或来工作之类，希注意表达，灵活处理。
I planned to....when......However, I .......ten days ago.
主体段落，写表明你原来(PLANNED)是想要去的，结果十天前得知一个什么东西导致你不得不去，内容自己发挥了，希望写些不让人反感的东西，不要写有更好的选择，最好写家里不同意，学校保研之类，并写下你的争取和曲折过程。
I hope you can kindly understand my reasons and apologize for the troubles I have made again. If there is a chance, would you please allow me to make some amends?
Your considerate understanding is greatly appreciated.
Best regards!
呼吁信：
My fellow students:
I am honored to have the opportunity standing here to call for a significant event. First of all, please allow me to introduce myself to you all. My name is @@@, the president of the student`s union.
As we all know......
把呼吁的事情陈述出来，进来有曲折感，用对比法，说以前好，现在的问题。可能是帮助同学，也可能是环境问题，捐助之类。
I hope all of you can be generous to......Let us make painstaking efforts to........and I firmly believe that....
第一个省略号写需要大家出什么力，比如捐款，比如宣传;第二个说来解决这个问题，第三个写你的期望，比如会变更好，会迅速解决。
Your kindness is appreciated and will be surely rewarding.
Best regards!
真善美句型：
任何解决问题的文章结尾肯定都要呼吁和展望未来，可用一万能倒装句，被我称为真善美句型，句套为：
Only if we..............can our society/campus become a more...for you, for me, for everybody to live/study in!
第一个省略号写我们应该做的事情，比如说一起努力，比如说更加关注什么问题，如：
Only if we make unwavering (坚定不移的) and constant efforts
or
Only if we pay more attention to environmental protection/....
第二个省略号写我们这样了我们的社会或者校园或者大自然会变成一个更怎么的什么东西，如
can our society become a more harmonious heaven(我们的社会变成更和谐的天堂)
or
can our mother nature become a more beautiful wonderland(我们的大自然母亲变成一片更美丽的热土)
加油!
