That is her dish变复数

That is her dish变复数 is that a dish?复数句 dish怎么变复数? 请问That is her brother.变复数句,要不要把her变成their啊? is this that 变复数怎么变 This is her watch.[变复数】 Is this her knife变复数 Is that her English book?复数形式 Is that her cousin?复数形式 is that her counsin 的复数形式 That is her brother.(改为复数句) that is a jacket 变复数形式 that is his pen变复数句 That is my grandmother.怎么变复数 that is his room 变复数 whose is that book（变复数） Is that coat blue?变复数 dish 复数