正确的应该是“it's my pleasure to be asked to speak here."确实是被动语态,但真正的主语是“被邀请人”,即“我”.而ask的固定搭配是“ask sb to do sth”.而且“被邀请在这说话是我的荣幸”的更地道的表达是“it's my great honor to be invited to speak here."