I have discovered through hard experience how challenging these small linguistic differences can be in relationships. I have a habit of saying "alright?" and it probably comes over as needlessly worrity (though a North American probably wouldn't use that word). I think it may be irritating to people.

Another one that really caught me out for a long time was that I'd say something like "Where do you want to go for dinner tonight?" and my Canadian partner would reply, "I don't care." For years I thought "OK, but why do you have to be so rude about it? Why not just pretend to care?" Eventually we had a discussion about it. Turns out that "I don't care" is simply Canadian for the British "I don't mind" and it is not rude in Canadian English. Whereas we Brits only say "I don't care" when we mean a dismissive tone (when we are just not bothered we say "I don't mind"). That's what I'm told anyway.

Oh, a question: does anyone know whether in Canadian English it soundsracist or not racist to call Indian people "East Indian"? To my British ears "East Indian" sounds weird, because we call people from India "Indian". But I have heard Canadians use the phrase "East Indian" and I think "that sounds a bit racisty but I'm not sure." For a long time I thought they were referring to people from the east of India.