英语改否定句 Is this a ruler 如何改

英语改否定句 Is this a ruler 如何改 this is a black cat.改否定句怎么改 Is this your suit 改否定句 this is an orange jacket咋改否定句?is this a map?做否定回答?急shi了! 英语,急~~~疑问句改肯定句和否定句.Is it a cat?肯定：否定： He is a boy改否定句 This is a photo of my brother改为否定句 怎么改 This is my aunt 怎么改否定句? This is the computer room.改成否定句 怎么改 Is this your backpack?改成否定句怎么改 This is my teacher.(改为否定句）怎么改?This is my teacher.(改为否定句）怎么改? 英语否定句：IS this a teacher's desk? 否定回答是? This is a nice cherry 改复数 Mike likes ( running) in playground 改疑问句 否定句 肯定回答 括号提问 this is a map.(改为否定句) This is a watch.改为否定句. this is letter A.改为否定句 This is a clock改为否定句 This is a lion.改为否定句