1) I am longing to see you soon.
2) I hope you will not decline my invitation.
3) We would feel much honored if you could come.
4) If you have no other plans for this weekend night, will you do us the favor of going to the party.
如果你这个周末没有其他的安排,能否赏脸来我们的派对?
5) Would you please let know as soon as possible if you can accept my invitation?
6) Would you please drop me a line to let me know if you are free to come to...
7) Your participation can surely add color to our ... and we are all looking forward to your involvement.
你的参与一定能为我们的...活动增添色彩,我们所有人都期待你的参与。
8) I do hope you will accept our invitation if it is convenient to you.
9) We would be looking forward to your participation in the party.