求翻译：我很抱歉，我这个星期六很忙，不能去参加你的生日聚会。在星期六的上午我要去参加英语竞赛，下午要去足球俱乐部而晚上我要去爷爷家吃饭对你的邀请我感到十分歉意。是什么意思？

I'm sorry, I'm very busy this Saturday to go to your birthday party. Saturday morning I am going to take part in the English competition, afternoon football club and I want to go to my grandparents ' home in the evening for dinner on your invitation, I am very sorry.

I am very sorry that I was too busy this Saturday, cannot go to participate in your birthday party. In the morning, I want to go to Saturday participate in English to go to football club competitions in the afternoon and evening meals at home I have to go to Grandpa's invitation to you I feel sorry

I was sorry very much that, my this Saturday is very busy, cannot attend your birthday meeting.I must participate in English competition on Saturday morning, but must go to the soccer club in the afternoon evening I to have to go to grandfather the family to eat meal to you invites me to feel extrem

I'm sorry, I'm very busy this Saturday to go to your birthday party. Saturday morning I am going to take part in the English competition, afternoon football club and I want to go to my grandparents ' home in the evening for dinner on your invitation, I am very sorry.

I'm sorry, I'm very busy this Saturday to go to your birthday party. Saturday morning I am going to take part in the English competition, afternoon football club and I want to go to my grandparents ' home in the evening for dinner on your invitation, I am very sorry.