英语改为否定句怎么改 给你这几个单词：is computer game it his

英语改为否定句怎么改 给你这几个单词：is computer game it his this is his computer game.改为否定句this----- ------his computer 改为否定句（英语的）This is a computer game .(改为否定句） He is 13 years ol It is a computer.改为否定句 It is his backpack改否定句 把英语的 ( I thingk it is interesting 0改为否定句怎么改 It is his book.改为否定句. This is her computer game.改为一般疑问句和否定句 This is the computer room.改成否定句 怎么改 This is his pencil sharpener 改为一般疑问句和否定句怎么改? I find my computer game.改为否定句,并翻译 I have a computer game.改为否定句.