this is my pen,but that one is his怎样翻译,语法对吗

this is my pen,but that one is his怎样翻译,语法对吗 thae is my pen.that is his desk.this is her pen-case.that is 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 _______as that one. This is the same pen that/which the one I lost,but mine is a this is pen 对吗 Is __ your pen ?That is his pen. A.that B.this C.her D.his. This pen is cheap than that one .This pen is __ __than that this is my pen.and that ruler is () too. this book is ( )that one ,but ( )than that one . That old hat is Susan's,but this new one is my那里错了 This is his green pen.That is a card.It is an orange.Is that