Did I hear you say . . . ?

Can I repeat that back to you to make sure I understand?

I think I misunderstood that part. Can you explain it again?

I feel like you’re not saying something important. What else do you need to tell me?

Can you explain that in a different way? I didn’t understand.

What does _____ mean?

How are you using the word _____?

How do you know that?

Can you give me an example?