This is his ruler.(改为否定句)

this ruler is hers.改一般疑问句 this is a ruler.改复数 This is his ruler.(改为否定句) is this his ruler.的肯定回答 This is his ruler.改为否定句.是不是This is not his ruler. 英语改否定句 Is this a ruler 如何改 ___________ It's his,I thinkA.Whose ruler is this B.Where's his ruler? This is a ruler怎么改一般疑问句 This ruler is for you .改为一般疑问句,怎么改? his,is,this,not,ruler.连词成句 Whose ruler is this? Is this red ruler ( ( ) ruler is this? this is my ruler.that is his dictionary.this is my uncle.these are his pens.复数,复数 This is his key改一般问句 That ruler is a (rectangle) 括号提问 This is a red strawberry 改复数 That's his ruler(改复数） is my ruler and that his book is (.)that 是 this