REQUESTING

　　- I'd like you/him to ……， please.

　　Could you……， please？

　　Do you think you could……？

　　Would you mind -ing……？

　　-Sorry. （Certainly.）

　　I'm sorry， but……

　　Unfortunately，……

　　I'm afraid I can't， because……

　　OFFERING TO HELP

　　-Would you like/Can I give you……a hand/a lift？

　　Would you like me to……

　　Shall I……

　　Perhaps I can help？ Can I help at all？

　　If you need any help， just let me/us know.

　　-Thanks very much - if you're sure it's no trouble.

　　That's very kind of you， yes， could you……？

　　No， thanks. I can manage.

　　That's very kind of you， but……

　　No thank you. I'm just having a look/waiting for someone.

　　ASKING PERMISSION

　　-May I ……？

　　Do you mind if I ……？

　　Can I ……？

　　Do you think I could ……？

　　Is it all right if I ……？

　　-Yes， go ahead. （Sure.）

　　Certainly.

　　No. I'm afraid not， because……

　　No. I'm afraid you can't because……

　　No. I'm afraid we aren't allowed to……