This is a book（变为否定句）

This is a book（变为否定句） 把陈述句变为否定句； This is an English book.Running is her favorite sport This is a book.(改为否定句） This is a book(变为否定句),I am a Chinese girl.(用SHE改写)the,pen,is,a,there,on,desk(连词成句) Is this your book ? 变为复数句 This is my computer.(变为否定句) This is my mother 变为否定句 There is a book and a pen on the desk.(变为否定句) He is going to buy a book变为否定句和一般疑问句.做两种回答 This is a book的否定句,一般疑问句,及肯定,否定回答 That is my parent 改为复数句 Are those your grandparents 作肯定回答 This is her friend 变为否定句That is your book 改为复数句 That is a ruler 变为否定句 This book is very interesting（变为复数句） This is the least interesting book .变为同义句 there is a book 改成否定句 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 shirt.(变为一般否定句） this is my English book.改为否定句