Is this your knife 改为复数句子

this is my knife改复数句 Is this your knife 改为复数句子 This knife is his.怎么改复数形式的句子? 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 Is,this,your,dictionary?(改陈述) is this your computer 改肯定句 Is this your computer?改肯定陈述句. This is your mother改同义句 Is this your suit 改否定句 This knife is sharp and that knife is blunt 翻译 This is your...改一般疑问句怎么改? -Ia this your bike?-Yes,this is怎么改 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.