变复数形式.1、This is his case.2.this is her hat.3.this isn,t my passport.4.is this your coat ?

变复数形式.1、This is his case.2.this is her hat.3.this isn,t my passport.4.is this your coat ? This is his pen.复数形式 This is his cousin.改为复数形式 This is a tomato变复数形式是? This is a horse.变该句为复数形式 This is his cousin.(改为复数形式） IS this his teacher?(改为复数形式） This knife is his.怎么改复数形式的句子? Thsae are his brothers（变单数形式） That's his friend（变复数形式） Is this your sister?(做否定回答) Those are my friends,(变单数形式) This is my sister?怎么变复数形式?代词my用变复数吗? This is pen变复数 This is his sister and that is his son.怎么改为复数形式 把these are my ruler改为一般疑问句后是什么?还有这几道题：this is her sister(变复数形式）that is my dictionary(变为复数形式)those are his books(变为单数） is this that 变复数怎么变 This is his sister and that,s his son.怎么改为复数形式 This is my brother.改为一般疑问句 that is his photo.改为复数形式 请用复数形式改写以下句子,“This is his case.”还有“This is her hat .Is my coat smart? that is his pen变复数句