1：The time flies, we haven't seen each other for a long time. All the things here are going on pretty well, I just miss you so much!
2：It is so great to hear from you again. 能再次收到你的来信我很开心。
3：Long time no see! 好久不见。
4：I trust that everything is going smoothly for you. 我相信你那里一切都好。
5：It is a great pleasure for me to have this wonderful chance to put pen to paper and send greetings to you.
In my humble opinion, you would be wise to take the following action: 在下认为，如果你能采取以下措施，将是一种明智的选择。
I hope you will not find it too forward for me to suggest that you... 请原谅我的直接，不过，希望你能___________。
In my experience, it seems that _______ would make sense in your situation. 从我的经验来看，针对你的情况，似乎________会有帮助。 At the risk of overstepping my boundaries, allow me to suggest that you____。 请原谅我的冒昧，不过我建议你_____________。 Gratitude I truly appreciate your kindness. 我很欣赏你的仁慈。
I am grateful to you for... 非常感谢你_________________-。
I appreciate it more than I can say. 我对你表示万分感谢。
I can never thank you enough. 万分感谢。
I wish there were a better word than " thanks " to express my appreciation for your generous help.
It was kind and generous of you to do this for me, and I appreciate it more than I can say.
Many thanks for your kindness and hospitality. 非常感谢你的仁慈和好客。
Now we have arrived back home safe and sound. 现在我已经安全到家。
Thank you from the bottom of my heart for... 我打从心底谢谢你(真诚地感谢你)。
Thank you again for your kindness. 谢谢你的好意。
Please accept my sincerest and deepest apology. 请接受我最诚挚、最深刻的道歉。
I apologize most sincerely for... 我诚挚地对___________向你道歉。 I am truly sorry to have done...
我对________向你表示道歉。 Please forgive me... 请原谅我曾__________。
I owe you an apology... 我为______向你道歉。
I regret to inform you that I am unable to do.. 很遗憾地告诉你，我没法___________。
I am so sorry to have put you through so much trouble... 很抱歉给你带来这么多麻烦，__________。
The honor of your presence is requested... 若你能出席________，我(们)将感到万分荣幸。
It's a pleasure for me to invite you to... 我很荣幸地邀请你参加__________。
We sincerely hope that you make it. 我们真诚地希望你能参加。
We would be honored to have you there with us... 如果您能参加我们的__________，我们将不甚荣幸。
I will cover all the expense involved. 我将负担所有的费用。
I can only imagine how difficult this time must be for you, and I want to extend to you my unwavering support.
Complain I am writing to express my dissatisfaction withat... 我写这封信是想告诉你们我对________不是很满意。
I very much regret to have to inform you that... 很遗憾地通知你，__________。
I would like to draw the attention of the authorities concerned to the ...我想就_____________问题引起有关部门的重视。 I feel something ought to be done about... 我觉得________方面还可以作一些努力(需要改进)。
I hope that the above situation will be improved as soon as possible. 我希望以上问题(情况)能尽快解决(改进)。
Your effort to provide good services will be highly appreciated by all. 我们会很感激您作出的一切努力。
We will appreciate your willingness to make up for the loss. 我们真的希望你们能对损失作出补偿。
Inquiry I would like to request some information about...
My first question is... 我的问题就是__________。
I am greatly concerned about... 我对_________较为关注。
Should I need to send further materials, please let me know.
Could you be so kind as to send me some relevant booklets on the above-mentioned aspects.