请问这句话的句子是不是不对呀?请给我一个正确的句子,how many years earlier was paper made in China than in Japan?

请问这句话的句子是不是不对呀?请给我一个正确的句子,
how many years earlier was paper made in China than in Japan?

你可以把它还原成肯定句,就知道对不对了.
Paper was made in China XXX years earlier than in Japan.
所以可以看出,这句话是对的.
祝你学习进步,更上一层楼!愿我们互相帮助,共同进步!请记得采纳,谢谢~O(∩_∩)O~

对的