Dear chuck,
I am so glad and grateful that you have invited me to your party. But I am so sorry that I can't attend. Because my friend Tom has been ill. He can't move by himself at all and stay on bed all night. It seems that he got serious fever. So I must take him to the hospital and I can't attend your party tonight.
Happy birthday to you my dear friend. I’m so sorry that I can't accompany with you in this special day. I hope you could understand me and enjoy the party.
Sincerely,
Jimmy
亲爱的chuck.
我非常高兴以及感激你邀请我去你的派对。但是我感到非常的抱歉我不能出席你的派对。因为我的朋友TOM病了。晚上他躺在床上自己都动不了。看起来他
发烧发的很严重。所以我必须带他去医院,今晚我不能去你的派对了。
生日快乐我亲爱的朋友。我感到非常的抱歉不能在这个特别的日子里陪伴着你。我希望你能够理解我,并且玩的开心。
真诚地,
Jimmy
希望帮到你,有什么问题可以问我。