Ⅰ. base on “以……为根据”，用法应是 base A on B如:① Edison based his ideas on scientific experiment. 爱迪生的想法是建立在科学实验的基础上的。

② You should base your opinion on facts. 你的意见都要以事实为根据。

Ⅱ. be based on “以……为根据”; “根据……”;“基于……”用法是A be based on B① What he said is based on fact. 他所说的话是以事实为根据的。

② The story is based on real life. 那故事是根据现实生活而写的。

③ Some modern languages are based on Latin. 在些现代语言是以拉丁文为基础的。