whose
How can I use whose in a sentence?
It was a clear, breezy day, and the grass rippled under their feet as they marched down the sloping lawns toward a smooth, flat lawn on the opposite side of the grounds to the forbidden forest, whose trees were swaying darkly in the distance.
Harry told the turban he did not want to be in Slytherin; it got heavier and heavier; he tried to pull it off but it tightened painfully — and there was Malfoy, laughing at him as he struggled with it — then Malfoy turned into the hooknosed teacher, Snape, whose laugh became high and cold — there was a burst of green light and Harry woke, sweating and shaking.
It so happens that the phoenix whose tail feather is in your wand, gave another feather — just one other.