this is my mother.改成一般疑问句?咋改?提示:"my变your is提前she can sing.划线提问 sing划线

this is my mother 怎么改成否定句 this is my mother音标 This is my father and my mother This is my mother 变为一般疑问句 This blue bag is ______ my mother. This is my mother 变为否定句 This is my mother timetale 修改病句 This is my pencil改成一般疑问句 This is my dress.改成复数句. This is my school.(改成一般疑问句) this is my classroom 改成疑问句 this is my eraser.改成否定句 this is my ruler改成否定句 this is my desk改成复数句 This is my umbrella 改成疑问句 This is my backpack.改成复数形式 this is my ring改成同义句 This is my ball.改成同义句