请哪位老师帮忙修改一下英语作文,指出错误,

请哪位老师帮忙修改一下英语作文,指出错误,
Tom,
I’m sorry about that our plan of Sunday has to put away.We planned to play football and go to buy some books on Sunday morning.But I can’t go with because my grandfather is ill.He is in hospital in my hometown.I’m concerned about him and I’ll go back to see him with my parent.
By the way,I wonder whether you can help me by an English-Chinese dictionary if you are going to go to the bookstore.I’ll be thankful for your help.I’ll return back on the next Monday and we can play football togather on the next Sunday.
Yours,LiHua