How Come? Casual Phrase

How come…? is a more casual and indirect form of the question “why.” I’m going to show you how you can use how come…? in your everyday English conversations and writing.

HERE ARE THE EXAMPLE SENTENCES:

Example 1:
Jack: I can’t go to Johnny’s party tomorrow.
Jenny: How come?
Jack: Because I have to work late.

Example 2:
Jack: Would you like some more coffee?
Jenny: No thanks. I’m trying to cut down.
Jack: How come?
Jenny: Because my doctor said too much coffee is not good for my stomach.

Example 3:
Why is Jack late? → How come Jack is late?
Why did Jack miss the party? → How come Jack missed the party?
Why are you going there? → How come you are going there?