You shouldn't have
Meaning: said when thanking someone who has given you a present, to mean that you did not expect it
Example: Flowers! Thank you, but you shouldn't have!
Выучи грамотный разговорный английский до уверенного владения всего за 9 месяцев по системе естественного усвоения иностранных языков. Жми!
Example: Flowers! Thank you, but you shouldn't have!