who=cine-se foloseste la persoane
Ex: Who is my neighbor?(Cine este vecinul meu?)
that-este folosit cand este vorba despre niste informatii obligatorii
Ex: They are the kids that won the first place in that contest
whose=insemna a,ai,al,ale cui ...(A cui?Ai cui?Al cui?Ale cui?)
Ex: whose book is that?(A cui e aceea carte?)