This is a book.(改为否定句）

This is a book.(改为否定句） This is a book （划线部分提问）划线:book It is an apple.(改为否定句) this is my English book.改为否定句 Is this your book?(改为否定句)如题 this is my book（改为否定句） This is her book怎么改为否定句 This is a book 改为复数句 this is a book改为复数形式 this is a map.(改为否定句) This is a watch.改为否定句. this is letter A.改为否定句 This is a clock改为否定句 This is a lion.改为否定句 This is a UFO改为否定句还有This is a letter A 改为否定句 There is a book on the desk.(改为否定句) 把She is reading a book.改为否定句 This is a book and that is a knife 改为复数句 Plrase put the clothes here 改为否定句麻烦全回答 Read this book.改为否定句