it is my watch变复数形式 the backpack is under the table.就画线部分提问

it is my watch变复数形式 the backpack is under the table.就画线部分提问 It is a watch.(改为复数形式) watch怎么变复数形式? It's my watch.变复数后的句子 it is my foot 变复数 It is my boot .变复数 It is my pen.(改为复数形式) This is my sister?怎么变复数形式?代词my用变复数吗? Sam is my friend.(变为复数形式)怎么变 It's a watch.（变复数） 1、This is a watermelon .2、It is a yellow shirt.3/That 's my watch.变为复数怎么变 This is her watch.[变复数】 Is that this watch?改为复数形式还有：The woman is my teacher. This is my watch.怎么变特殊疑问句变为复数句又是怎样的？ 单句变复句,把句子中单数词变成复数词1.She is her cousin .______ ______her ______ 2、He is my son .______ ______ my ______3、It is my watch . yes,it is.变复数 She is my friend.（变复数形式） ______ my ________. It is a watch.变为复数句