IS THAT YOUR SISTER?(作否定句）

Is that ( ) your sister Is that your sister?,回答 is that your sister?应该怎样回答? Are those your sisters?Is that your sister?还是 That is your sister?Those are your sisters? is that your sister?is she your sister?yes,___ ___ yes,___ ___ is that your sister改为复数形式,怎么改? Is that girl your sister?做否定回答 Is that your sister?的肯定回答是什么 当问句为Is that your sister?时,答语为什么? IS THAT YOUR SISTER?(作否定句） is,your,that,Kate,sister连词成句 She is your sister This is your sister That is myThis is your sister That is my brotherHe is my sonNo,it isn 'tYes it is 改为复数形式 英语翻译is in the photo ‘s people your sister is that in the photo ’s people your sister sister,Lily IS she your sister,Lucy? is that your sister变为负数句 ——　—— your sisters? Is this your sister?英语语法Is this your sister?No,it isn't.Is that your brother?Yes,it is.为什么这里的“your sister”、“your brother”在回答时要用“it”代替?可以用“she”或“he”代替吗? 变成一般疑问句 The bus is black.That dog is cute.The cow is big.That is your sister.