may you be happy 为社么要用may呢

may you be happy 为社么要用may呢 may you be happy May you all be happy. may you luck对吗?May you be happy!为什么要加be呢? May you happy.还是May you be happy. may you happy 和may you be happy那个对? Without me,you may be more happy I am tired,may you be happy May you be happy all your life! may you happy May you happy是什么意思 May you happy forever!