this is an orange jacket咋改否定句?is this a map?做否定回答?急shi了!

this is an orange jacket咋改否定句?is this a map?做否定回答?急shi了! is this an orange?(做出否定回答) This is an orange做肯定、否定句 this is a map.(改为否定句) This is an orange变否定句疑问肯定回答否定回答 this an is orange jacket连句 This is an orange pencilcase.用that改为否定句 This is a map of China(改成否定句） tHIS IS A MAP OF cHINA.改为否定句 this is a map of china改为否定句 Is this a ruler.(做否定回答) This is an apple 改为否定句,怎么改?