英文信件的格式大致如下:
Dear XXX
[问候]
[正文]
[结尾]
[敬礼词]
[人名]
你的这种情况大概是:
Dear XXX
Good morning/afternoon/evening.(可省略)
During that/my tough/difficult days,many people have helped me,especially you.I thank you.(你可以说:I can't thank you more.)
Hope you and your family live a happy life.
Grateful,
[你的名字]