used when you are commenting on what sb has just said :
'We're off to France soon.' 'Oh yeah? When's that?'
'I'm going to be rich one day.' 'Oh yeah?' (= I don't believe you.)
used when you are commenting on what sb has just said :
'We're off to France soon.' 'Oh yeah? When's that?'
'I'm going to be rich one day.' 'Oh yeah?' (= I don't believe you.)
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005