This is my sister(变为复数句)

This is my sister(变为复数句) （this）is my sister my sister is seven.(变为一般疑问句) This is my sister.改为复数形式、 This is my sister.(改为一般疑问句) oh,jane,this,is,my,sister,kate. 是this is my sister kate吗 this is not my sister 缩写 This is for my sister是什么意思 This girl is my sister 对划线部分提问：（my sister)对（my sister)提问 This is my mother 变为一般疑问句 This is my book 变为一般疑问句 This is my coat .变为一般疑问句 This is my computer.(变为否定句) This is my mother 变为否定句 This is my sister a什么that is my brother? And this is my sister和This is my sister的区别, This isn't my mother(变肯定句) This is my mother (变一般疑问句This isn't my grangdfather (变肯定句)This is my father (变为否定句They are my parents(变一般疑问句This is my brother (变否定This isn't my sister (变肯定句Th