英语怎么变复数形式?如:This is a box.要说出怎么是这样变的?
This is a box and that is a knife.改为复数形式〔怎么变的〕
this is a piano怎么变复数
is this that 变复数怎么变
this is a bix.变成复数的句子怎么变
This is my sister?怎么变复数形式?代词my用变复数吗?
This is a tomato变复数形式是?
this is a box.变复数句___________?
Is it your box?变复数形式
This is a pen变为复数句,怎么变
Is this your backpack?变复数要怎么变啊!
is怎么变复数
It`s a big heavy box.变成复数怎么变