who is缩写就是:Whos 扩展: whose 的意思是“谁的” whos的意思是“谁是",也是who is 的缩写
例如:
It's my dog.划线提问my,应该用whose.Whose dog it is?
He is my firend LiMing.划线提问my friend LiMing.应该用:who's.Who' he?