英语否定句怎么改?there s an apple on the desk改为英语否定句

英语否定句怎么改?there s an apple on the desk改为英语否定句 英语初一句型转换There are some flowers on the teacher’s desk.（改为否定句） This is an apple 改为否定句,怎么改? there in a light on the desk.改为否定句 There were some books on the desk.(改为否定句) There is a book on the desk.(改为否定句) There are some books on the desk.改为否定句 There are two books on the desk.改为否定句 There is a light on the desk.【改为否定句】 There are some book on the desk改为否定句 There is a light on the desk.改为否定句 There are some magazines on the desk.(改为否定句)