Is this your sister的复数句?英语句的翻译

Is this your sister?的答语是? is this your sister的答语是 is this your sister 的肯定回答是?is this your sister 的肯定回答是? Is this your sister是什么意思 Is this your sister 与Is she your sister?的区别 Is this your sister?与Is she your sister?区别 is this your brother?的回答与is this girl your sister?的回答的区别 IS this your sister?(改为复数句) Is this your sister?否定回答RT 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? Is this your sister?的回答是yes,it is还是yes she is where is your sister's sister's sister?的意思 Is this your sister?的答语是Yes,it/she is. Is this your sister?的答句是“Yes,it is.”还是“Yes,she's.” Is this your sister?的肯定回答有哪几种?除了,Yes,it is. Is this your little sister's toy?Yes,it is的复数 写出下列句子的复数形式this is my book.is that your sister?that is my baseball.is this your friend?what's this in english? Is this your sister 答语为什么要用it is.