Thank you for inviting me to your birthday party. I really enjoyed meeting your family as well as your friends. Your parents were so kind. The cake that your father bought was delicious,and the dishes that your mother made were delicious. I didn't know any of your friends,but they were all friendly to me and the video you showed was quite wonderful. I liked it very much. I think I had a great time at your party
Dear (name of friend):
I am having a birthday party this saturday and would like to invite you to come along.I am turning eighteen,which is a big turning point in my life and would want all my friends and family to be there to share this special moment.It would be a casual barbecue at a park near my house and I will send you the exact address closer to the date.Please contact me as soon as possible to inform me of your attendance.