he is a factory worker.改否定句怎样改

he is a factory worker.改否定句怎样改 He is a boy改否定句 maybe he is a teacher改为否定句怎么改? He is a good boy（改否定句） He is a worker.(改为否定句,疑问句和回答) She is a worker 改一般疑问句 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 Mike is a factory worker. He likes winter改为否定句怎样改? He is a green finger.改同义句怎么改? 连词成句 a /tony 's/is/factory/father/worker(?)