1. 言谢信
June,18, 2018
Dear Mike:
I am writing to express my heartfelt gratitude for your help before the final exam. --说明书信的目的
My mother was suddenly ill in hospital during that period.As ill luck would have it,my father was on a business trip in another city. So I had to take several days off to look after my mother in the hospital. It was considerate of you to visit my mother every day and bring me your notes to help me with the studies. It's really a big favor you have done me. If it had not been for your selfless and continuous help,I fear that I would have failed my final examinations.
结构： 事情+感谢的理由
It's a traditional virtue of our nation to take pleasure in helping others. However,nowadays many people only concern themselves with their own gains and losses.Were there more people like you,this world be a better place to live in. --升华情感
My gratitude to you is beyond words. I am fortunate enough to have you as my best friend.--总结
Yours sincerely
Darren