be based on/upon

be based on/upon  以……为基础

【例句】

◆The film is based on a true story．这部电影以一个真实的故事为基础。    

◆This song is based on an old folk tune.这首歌以一支古老的民间曲子为基础。

【联想】base.…on/upon为”动词+介词”结构的动词短语，base是及物动词，后面常接名词作宾语，如：policy，strategy，argument等；on/upon后面也常接名词，如：fear，reason．evidence等。其被动形式为be based on/upon。

【微测】____ an important decision more on emotion than on reason, you will regret it sooner or later.    （江苏高考）

A．Based     B．Basing    C．Base      D．To base          

[B]