I use the set of words,not very often-"How come?" and "How is it that?" Can both the set of words be used to express same meaning?
Phrase and idiom meaning of the two sentences are nearly same.
How come you are not attending the conference?How is it that you are not attending the conference? Two examples ofhow come? How is it that? I have formed Three sentences using the idioms/phrases.
Since five reputation is needed to post question on meta site,I have only two reputation.so,I have posted the question on Beta site.