is this yours?句子成分this是表语?yours是主语?is是谓语?

is this yours?句子成分this是表语?yours是主语?is是谓语? This book is yours This pen is yours This dress is yours.对yours提问This dress is yours.对yours提问 Is this guitar your/yours? This is ( ) book.your|yours This is yours pen.为什么? is this new dress yours? is this watch yours?同义（ ）this （ )( ) This pair of socks is yours is this white bike yours?是什么意思? Is this car (your/yours) 填哪个? Is This jacket [yours your you]? This pencil is yours 改一般疑问句 This book is ( )? 填Your还是Yours? this dog is yours 同义句 Is this beautiful car yours 同义句 This book is yours ,（ 反意疑问句.