"I will treat him to lunch."
Translation:Jag ska bjuda honom på lunch.
So in England "invite" is not quite the same as "treat" in that I could "invite" a number of people to gather at a restaurant for a meal but it doesn't necessarily mean I will pay for them all - we may end up splitting the bill for example. If someone uses the word bjuda is it unambiguous that they are saying they will pay ? If so, is there a word in Swedish that mean "join me for lunch/let's go have lunch together" which everyone understands that it means they may have to pay for themselves ?