预约 - 预约安排
我想和史密斯先生预约一个时间。正式，非常礼貌
I would like an appointment with Mr Smith please.
什么时间适合您？正式，礼貌
When would it suit you?
我们能约见一个会面吗？正式，礼貌
Can we arrange a meeting?
我认为我们应该见一面。正式，直接
I think we should meet.
预约 - 会面推迟
我想知道我们是否能推迟会面呢？正式，非常礼貌
I wonder whether we can postpone our meeting?
明天下午2点我可能不行，晚一点可以吗？4点钟怎么样？正式，礼貌
I can't make it tomorrow at 2pm. Can we make it a bit later, say 4pm?
我们可以另约一个时间吗?正式，礼貌
Would it be possible to set another date?
我不得不把会面推迟到...正式，礼貌
I have to postpone our meeting until…
不好意思，我们预约的那天我另外有约，我们另约一个时间好吗？正式，礼貌
Unfortunately I am double booked on the day we arranged to meet. Would it be possible to make another date?
我不得不更改我们会面的日期。正式，直接
I am forced to change the date of our meeting.
我们的会面能提前/推迟一点吗？正式，直接
Could we make it a bit earlier/later?
预约 - 取消预约
您的电话无法接通，所以给您写邮件告诉您我不得不取消明天的预约，对因此造成的任何不便，我表示十分抱歉。正式，礼貌
I could not reach you on the phone, so I am writing you this mail to tell you I have to cancel your appointment for tomorrow. I'm extremely sorry for any inconvenience caused.
非常抱歉地告诉您，我无法参加我们约定的会面，因而不得不取消预约。正式，礼貌
Regretfully, I have to inform you that I will not be able to attend our proposed meeting, and shall therefore have to cancel.
恐怕我必须取消明天的预约。正式，礼貌
I'm afraid I have to cancel our appointment for tomorrow.
因为...，恐怕我不得不取消会面。正式，礼貌
Owing to…, I'm afraid I have to cancel our appointment.