that is a jacket 变复数形式

that is a jacket 变复数形式 怎样变一般疑问句 例如；that is a yellow jacket That is a jacket She is a nice girl 把这两个变为复数句 That is a jacket in English.对a jacket提问 is this that 变复数怎么变 That is a red bus.变复数形式. 变一般疑问句并作答.1.I am Jack.2.This is a jacket 3.That is my computer game. 变复数 That isn't a jacket下面句子如何变复数请帮忙This is an eraserIs it a yellow ruler Yes,it isWhat's this in English?It's am orangeWhat's color is the quilt?It's whiteIt's my blue ballIs this his computer?no it isn't,It's your compu that jacket is yellow that a jacket is yellow是不是就错了? 将下列单数句变为复数句 1,That is a jacket 2,She is anic将下列单数句变为复数句1,That is a jacket2,She is anice girl3,What color is it4,Is this your friend 把下列句子变为复数句1.I am a girl2.He is my cousin3.She is at school4.This is his picture5.That is an orange jacket This is an eraser That is aThis is an eraserThat is a plate变复数句 that is his pen变复数句 That is my grandmother.怎么变复数 that is his room 变复数 That is her dish变复数 whose is that book（变复数） Is that coat blue?变复数