Is this knife your no it is not 有什么错

Is this your knife 改为复数句子 连词组句 your,this,not,knife,is 同义句转换：Is this your knife?Is this ( ) ( 说明白为什么 Is this knife your no it is not 有什么错 Is this knife your no it is not有什么错 This knife is sharp and that knife is blunt 翻译 Whose knife is this?(改成复数) This is a knife 改为复数 This is a knife.怎样变复数. this is my knife改复数句 Is this her knife变复数 This knife is broken.(同义句) Is the knife ___ your right hand? this is knife in the box（变复数句 whose knife is this?将句子变成复数 This is an apple,that's a knife句型转换 This knife is his.怎么改复数形式的句子? this knife is jim's.有没有错?