Checking for Understanding:
Do you understand?
Are you following me?
Do you understand what I mean?
Do you understand what I’m saying?
Expressing lack of understanding:
I don’t get it.
Sorry, I didn’t get your point.
What do you mean?
I’m not sure I got your point.
I beg your pardon, but I don’t quite understand.
I don’t quite follow you.
I’m sorry. I don’t understand what you mean.
Sorry, I didn’t quite hear what you said.
Asking for clarification:
Could you clarify that, please?
Could you explain that, please?
What do you mean by that?
Could you say that again, please?
Could you repeat, please?
Could you put it differently, please?
Sorry, let me explain…
Let me clarify it for you…
To put it differently…
Let me put it in another way…
I got it.
Ok, I got what you mean.
I understand what you mean.