正文開頭禮貌問候，然后簡單自我介紹，再進(jìn)入信的主體部分。

開頭用Dear [朋友名字]，正文介紹寫信目的，結(jié)尾祝愿并署名。

Dear [Friend's Name],
I hope this letter finds you well. I wanted to take a moment to express my gratitude for all the support and friendship we have shared over the years. Your encouragement has been instrumental in helping me overcome many challenges, and I cannot thank you enough for your kindness.
As we continue on our journey together, I am excited to see what new adventures we will embark on together. Please know that no matter where life takes us, I will always be here for you, ready to lend a listening ear or offer a helping hand.
With warmest regards, [Your Name]