1. A: Would you mind taking the dog for a walk?
B: No, not at all.
2. A: Could you open the window?
B: Sorry, but I think it’s locked.
Questions:
Speaker A’s requests is more formal in dialog 1/2.
Speaker B says “No, I can’t” to Speaker A in dialog 1/2.
出自:北京开放大学大学英语(2)