Question

hay algún fallo es tas frases? (Una es correcta)
-I was living in Barcelona when I was a child.
-Is this the boy who’s coming to your party?

Answer 1

la que es correcta es la de: Is this boy who's coming to your party?

y la que esta mal es la de: I was living in Barcelona when i was a child.

estaría bien si se escribiría así: When I was a child I lived in Barcelona.