Mary has an interesting book变为否定句

Mary has an interesting book变为否定句
Mary has an interesting book变为否定句

Mary has an interesting book变为否定句
Mary doesn't have an interesting book,
Mary hasn't an interesting book.

Mary doesn't have an interesting book.

Mary did not have an interesting book

Mary doesn't have/has not an interesting book.

两个答案：
1.把has当成助动词：Mary hasn't an interesting book.
2.把has当成实意动词： Mary doesn't have an interesting book。
祝你英语天天进步，望采纳啊！

Mary doesn't have an interesting book.