How come ?

jelentése: Hogyhogy ? Miért? Hogy lehetséges?   -informális helyzetekben használatos

Remrandt, Önarckép

példák: 

•  How come you are late? ( Why are you late? ) 
• You are wearing your best shoes today. How come? (You are wearing your best shoes today.Why?)
• How come you're not attending the conference? ( attend= részt vesz )
• How come I never have enough time?

 szinonima: How so? How is it so? How is that? How did it come about that.... (ez utóbbiból származik a "how come".