according to

根据导游介绍，那是古代一个著名的文化。

___According ___to the guide, it was a famous culture in ancient times.

根据老师的说法，我们明天有考试。

___According ___to the teacher, we have a test tomorrow.

根据规定，你不能在课堂上吃东西。

___According ___to the rules, you can't eat in class.