my pen is cheaper than his.这个his在语法上叫什么?区别于this is his pen中的

my pen is cheaper than his.这个his在语法上叫什么?区别于this is his pen中的 this pen is his是什么意思 This is his pen对his pen提问 this is my pen,but that one is his怎样翻译,语法对吗 Is this your pen Is this his pen?选择疑问句 thae is my pen.that is his desk.this is her pen-case.that is my pen is five yuan.his pen is six yuan. my pen and his pen is yellow用is Is this his pen 改成同义句 This is his pen.复数形式 This pen is his改成同义句 is this his green pen?的中文翻译.