There is a knife in the kitchen.(改为复数形式)

There is a knife in the kitchen.(改为复数形式) There is a knife in the kitchen 改为复数句子 把下列句子该形式改为复数形式There is a knife in the box.Our teacher often there is a potato and a packet of salt in the kitchen改成复数形式 There is a knife on the table 复数形式 1.A new knife is in the pencil box.(用some将句子改为复数形式) there is a watch in the box改为复数形式 There is a child in the classroom.改为复数形式 There is a child in the classroom.改为复数形式. There is a dog in the street.改为复数形式 This is my book.(改为复数形式) There is a nice cat in the tree.(改为 This is a knife.（改为复数句） Is there a glass on the