is this umbrella yours 谁能教我为什么是yours .分析一下这个句子的结构

is this umbrella yours 谁能教我为什么是yours .分析一下这个句子的结构 which is yours?这个句子中which是主语还是yours是主语? this old radio of yours of后面为什么是yours Is this yours?和Are these yours?的答句有哪些 This book is yours This pen is yours This dress is yours.对yours提问 My shoes are the same as yours分析句子结构 是is this schoolbag your还是is this schoolbag yours This pen is ______as yours is this watch yours?同义 is this shopping bag yours?