There are many questions to ask before a meeting. If you are curious about what the meeting will cover, you will need to ask the organizer of the meeting. You can also ask things like how long the meeting will take, and who is coming to the meeting. Let's try a couple of these sentences. 

开会前有许多问题要问，如果你对会议的内容感到好奇，你需要询问会议的组织者，你也可以问问会议需要多长时间，以及谁会来参加会议，让我们来试试几个句子。

"Hi Jack. Do you know who is coming to your meeting at 2:00?" 你好,杰克。
你知道谁会来参加你下午两点的会议吗?

"Who all did you invite to the triage meeting?" 

你们邀请了谁来参加这次的分类会议?”

"Hi Jack. How long do you think the meeting will be?" 

你好,杰克。你认为会议会持续多久?

"I have to schedule another appointment at 4:00 but I don't want it to overlap with yours. How long is the meeting going to be?" 

我必须在4点安排另一个会议，但我不想让它和你的会议有重叠，会议要持续多久?

"Is the meeting going to be more than an hour?" 

会议要超过一个小时吗?

"What time was the meeting again?" 

会议什么时候再开?

"When are you going to make that presentation? I thought it was today?" 

你什么时候做这个报告?是今天吗?

Here are common statements people use when they can't attend a meeting. 

这是人们不能参加会议时常使用语句。

"I have another appointment that conflicts with your meeting. I will not be able to make it." 

我还有另一个会议，那样的话会跟你的会议会有冲突，我参加不了了。

"I have another meeting that I cannot miss. I won't be able to make yours." 

我有另一个会议，那我不能错过，你的会议我就参加不了了。

"I won't be able to go to the 3:00 meeting. I have another appointment at the same time." 

3点的会议我参加不了了，在这同一时间我还有有另一个会议。

"I can't go to the meeting at 4:00. I have a doctor's appointment. Can you take notes for me?" 

4点的会议我去不了了，我约了医生。你能帮我做笔记吗?

"I'm going to be out of town tomorrow, so I won't be able to attend the quarterly meeting. Can you send me a mail on the topics that were discussed?" 

我明天要出城去，所以我不能参加季度会议了，你能给我发一份有关讨论主题的邮件吗?