the film you saw last night was made __ on a true story that happened many years ago.a. to be based b. based答案选B,我觉得A也是可以理解的,make 的被动要还原to, 请大师指教!谢谢!

the film you saw last night was made __ on a true story that happened many years ago.
a. to be based b. based
答案选B,我觉得A也是可以理解的,make 的被动要还原to, 请大师指教!谢谢!

based on sth.以...为基础
make a film 制作电影
make a film based on sth.
明白了?

make sth to do 制作。。为了
在这句话翻译就不同了
而 b是分词作状语，based on 基于
because the film was on a true story that happened many years ago.