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?