May2,2021
(时间写在右上角)
DearLucy，
NextMondayismy20thbirthday.Imagine,therearealreadytwentyyearsbehindme!NowonderIfeelold!
Myparentsaregivingadinnerpartytomarktheparty.Thefirstpersontheywishtoinviteisyou,mychildhoodpal.Indeed,allofthose20yearsaremoreorlessassociatedwithyou.
We'llbeexpectingyouanytimeaftersix.Seeyouthen.
Yours,
_
(落款写在右下角，标点是逗号)