There is a book on the desk.该怎么划句子成份?

There is a book on the desk.该怎么划句子成份? is there a book on the desk? 根据要求,转换句子.1.There is a book on the desk .(变复数)There ________ There is a book that is on the desk there is a book on the desk .please _____it_____.填空 There is a book and two pens on the desk. There is a book on the desk.(改为否定句) there is a book on the desk改为复数句 There is a t_____ book on the desk.补充单词 there is a book on the desk 翻译问题 There is a English book on the desk 改错 There is a picture book on desk 怎么改