Can I ask what you wish to see him about?
Do you have an appointment?
Will you wait a moment? I'll tell him you're here.
have an appointment (有约定)
Tip:常与介词 with连用，构成 have an appointment with sb. ，表示 "和某人有个约会 "。 appointment作名词还表示"职位，任命"。如I accepted the appointment as chairman. (我同意担任主席一职)。 appointment有许多固定搭配，如 break an/one's appointment违约，失约 by appointment按照约定，照章 have an appointment with sb .在某时间和某人有约 hold an appointment 担任某职 keep an/one's appointment守约 fix/make an appointment with sb. 与某人约会。