is this handbag hers 的语法结构是啥?

is this handbag hers 的语法结构是啥? hers 不是说是名词性物主代词吗?怎么这句话（Is this handbag hers)中有个handbag这个名词呢 This is hers.主语是啥 英语Is this your handbag?是啥意思? is this your handbag （ How much）is this beautiful handbag?handbag是可数名词为什么用How muc This handbag is very____(珍贵的）to me .是填valuable 还是 precious 说 Is this your handbag?回答 this is handbag对不对呢 This is your handbag?和Is this your handbag?是一个意思吗?如果不是一个意思哪有 关于is this a handbag这句的问题 ( )(who) is this handbag所给单词的适当形式