I spent ten yuan on this book.改为否定句

问题描述:

I spent ten yuan on this book.改为否定句
I spent ten yuan on this book.改为否定句

Ididn't spendtenyuanonthisbook.
用助动词 do 的否定形式.因为原句是过去时,所以用 didn't
另外,助动词后面都要跟动词原形,所以用 spend