- belonging to or associated with which person谁的：
as determiner whose round is it?该轮到谁了？
as pronoun a Mini was parked at the kerb and Juliet wondered whose it was.一辆“迷你”轿车停在路缘上, 朱丽叶纳闷这车是谁的。
- of whom or which (used to indicate that the following noun belongs to or is associated with the person or thing mentioned in the previous clause)［用于引导定语从句］ 那个人的, 那些人的; 那个的, 那些的：
he's a man whose opinion I respect.
他是一个我尊重其意见的人。
词源
Old English hwæs, genitive of hwā 'who' and hwæt 'what'.