这是祈使句,说话人希望Jack能够尽快把书归还图书馆.Jack还没有换,所以应该用 will you? don't you? 是错误的.
再看下面,如果已还,就是
Jack, you returned the book to the library, didn't you?
这是祈使句,说话人希望Jack能够尽快把书归还图书馆.Jack还没有换,所以应该用 will you? don't you? 是错误的.
再看下面,如果已还,就是
Jack, you returned the book to the library, didn't you?