Respuestas

2013-12-03T20:07:43+01:00
Who: Se utiliza para referirse a personas.
Eg: The man WHO robbed the bank had two guns.
Which: Se utiliza al referirse a cosas, lugares, nunca a personas.
Eg: I went to London last year and I took a lot of pictures WHICH were taken by a tourist.

Nota que Which se usa cuando se formula una oracion.