There are some hamburgers on the table 改为否定句用把are 变成is吗

There are some hamburgers on the table 改为否定句用把are 变成is吗 There are some apples on the table 改为否定句 There are some books on the table改为否定句 There are some apples on the table.(用just now改为否定句) there are some books on the table.(变为否定句 there are some hamburgers for lunch.改为否定句 there is some ___o there is a big cake on the table.there are some hamburgers a 一.句型转换1.There are some apples on the table.(改为否定句)There____ 改为否定句1there are some books on the table 2daming wrote a lett There are some cakes on the table.（改为否定句） There are two boxes on the table改为否定句 there are some oranges on the table.改为单数句