This is my sister.改为复数形式、

This is my sister.改为复数形式、 This is my sister.(改为一般疑问句) This is my sister 改为复数句快 把This girl is my sister.改为一般疑问句 this is my sister' room改为否定句快 This is my sister Kate.改为一般疑问句 This is my sister's room改为否定句This is my sister;s room 改为否定句 1.This is my sister.改为复数句2.That is my friend.改为复数句 （this）is my sister They are my uncles.改为否定句 This is not my sister.缩句 my sister is going to see a play this weekend.改为一般疑问句[ ] [ ] sister going to [ ] a play this weekend？ 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 She is not my sister.改为肯定句【 】 【 】 my sister. IS this your sister?(改为复数句) This is his sister改为复数句 This is my sister.改为一般疑问句并做肯定回答 That's my brother改为否定句 This is my sister.改为一般疑问句并做肯定回答 This is my sister.(改为一般疑问句,并作否定回答)