that is a green pen表语和宾语是否都是pen,其中that是主语?

that is a green pen表语和宾语是否都是pen,其中that是主语? That is green pen that is a pen that is his green pen一般疑问句 一般疑问句中的指示代词是做的什么成分?如：Is (that) a green pen? This is his green pen.That is a card.It is an orange.Is that this is a red pen.and that is a green pen.（改为同义句） this is a This a pen.that is a pen,什么 That is your pen that is your pen. you should draw with pen,that is,in a pen hers,that,green,is,pen(?)连词成句