This is my pen.(变为复数句）My pens are blue.blue 是划线的 （就划线部分提问）This is my pen.(变为复数句）My pens are blue.blue 是划线的 （就划线部分提问）是不是 These is my pens .和 What are your color pens .

This is a pen 变为复数如题 This is a pen变为复数句,怎么变 This is my sister(变为复数句) this is my pen pal改成复数形式 This is pen变复数 This is my pen.(变为复数句）My pens are blue.blue 是划线的 （就划线部分提问）This is my pen.(变为复数句）My pens are blue.blue 是划线的 （就划线部分提问）是不是 These is my pens .和 What are your color pens . That is a pen.(变为复数) that is a pen (变为复数） This is my good friend 变为复数句 This is my pencil（变为复数句） this is a my pen This is his pen.复数形式 this.is pen变复数句 this is a pen.改为复数句 This is a pen.(改为复数形式) He's my pen pal.变为复数形式 It is my pen.(改为复数形式) there is a pen on the desk 变为复数