Excuse me...

To ask for help:
Will you please slow down?
Will you please repeat...
Will you please explain...
Will you please define...
I need translation please
Will you help me please?

To ask for permission:
May I go to the bathroom please?
May I translate please?
May I help my friend please?
May I talk to my friend please?
I understand, may I please explain or translate...
May I please have a new notebook?

To ask to borrow:
Do you have a pencil I can use, please?
Do you have an eraser I can use, please?