This is his sisters （复数） Is he your mother（做否定回答,在改陈述句）

This is his sisters （复数） Is he your mother（做否定回答,在改陈述句） this your book改复数,单复数句型各变疑问句.she is my mother.变疑问句,否定回答 t Is this his brother?(改为复数句子) Is he my friend?（做出肯定,否定回答） Tho Is this your pen?（做否定回答） is that your friend 改为复数句 is this his backpack作否定回答 is this your father?否定回答 that is his sister?复数句 按要求完成句子.Is this your mother?(做否定回答）That's her sister.(改为一般疑问 Is this your brother?(做否定回答) Is this your friend?做否定回答 Is this your mother 的否定回答是什么 Is this your pencil?改为陈述句+复数 Is this your computer?改肯定陈述句.