There is a book on the desk怎样划分句子成分?是主谓宾还是主系表?请详解,

There is a book on the desk怎样划分句子成分?是主谓宾还是主系表?请详解, There is a pair of glasses on the desk. 分析一下句子成分,是主谓宾的那种. there be 句型 的部分倒装There is a book on the desk 主谓宾是什么? There is a book on the desk.中的on the desk是状语还是后置定语 is there a book on the desk? What is on the desk?是用It is a book回答,还是There is a book There is a book on the desk.划线部分提问,划线部分是on the desk. 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