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]