:Asking for permission
?Can I ask you a question
?May I have a piece of cake
?Could I ask you to turn off the lights
:Some other common phrases are
?Do you mind if I smoke
?Would you mind if I ask you something
?Is it okay if I sit here
Would it be all right if I borrowed your lawn mower
?
:Giving Permission
.Sure
.Go ahead
.No problem
:Refusing permission
.I’m sorry ,but that’s not possible
.No, please don’t
.Sorry ,but you can’t