Believe

  1. Do you believe…

  2. Would you believe…

  3. Can you believe…

What’s the difference?

Thanks.

Please supply complete sentences.

I mean, can they be used in the same meaning to express surprise?

Ah. No, #1 does not sound like that: it is simply inquiring about a belief.

  1. You won’t believe what just happened.

  2. You wouldn’t believe what just happened.

What is the difference?

#2 is more diffident, more polite. #1 is more common.