复数形式This is my book.Is that his uncle?Is she your friend?I am a woman teacher.

this is a book改为复数形式 This is her book的复数形式 This is my parent.(变成复数形式) this is my feiend 的复数形式 This is my sister.改为复数形式、 This is my friend 改为复数形式 This is my cousin.改为复数形式. this is my ear的复数形式 This is my backpack.改成复数形式 写出下列句子的复数形式this is my book.is that your sister?that is my baseball.is this your friend?what's this in english? This is my book.(改为复数形式) There is a nice cat in the tree.(改为复数形式)Those are rulers.(改为单数形式) This is my book.改为复数形式 There is a nice cat in the tree.改为复数形式 Those are rulers 单数形式 复数形式This is my book.Is that his uncle?Is she your friend?I am a woman teacher. this is my book.写出下列句子的复数形式 还有Is that his uncle Is she your friend?yes,it is.this is my pencil case. This book is in that box.（改为复数形式） How much is this English book?(改为复数形式） This is an Enlish book.(改为复数形式) 改成复数形式．4.This is a book.