What is the proper way to ask someone if we still meeting tomorrow?

Question:

I asked a friend to meet up in person. He said we can meet tomorrow. 

What is the correct way to ask if he still going to come to the meeting?

Should I use: 

• Is the meeting still on? 

• Are we still going to meet up? 

Is there another way to ask that question based on English language grammar?

Answers:

1. I'll come to the point straight. I guess it is about the still part which makes the proposition a reconfirmation and not a mere request.

• I hope we are still meeting tomorrow as planned? (Formal & Humble)
• I hope the meeting is still on? (Informal)
• Is the meeting still on? (Informal)
• Are we still catching up tomorrow? (Casual)
• Is there any change of plans for tomorrow's meeting?
• Hope the plan for tomorrow's meeting still holds good!

And one can go on.......

2. Both ways you have presented are common and grammatically fine. You might also ask, in a less formal way, "Are we still good for tomorrow?". Your friend, remembering your previous plans, will understand.

(But, especially when spoken by a non-native English speaker, the ambiguous "good for tomorrow" is apt to be confusing. It makes more sense to simply ask "Are we still having a meeting tomorrow?", or some such. – Hot Licks Jul 3 '16 at 1:07)