Social Communications(3)
(6)、邀请（Invitation)
Would you like to go for a walk?---OK.
You must come to dinner with us.--I'd love to
May I invite you to dinner?--- I would like that,thanks.
What/How about having a swim?---That would be very nice.
(7)、请求允许（asking for permission)
May I come in?--- Yes, please.
Can/Could I use your telephone?--- Sure.
Is it all right if I sit here?--- Please do.
I wonder if I could smoke here.--- I'm sorry, it's not allowed.
