what do you think of the film oh,I have never see( )

题目

what do you think of the film oh,I have never see( )
a good one
the better one
the best one
a better one
能具体说下原因么

答案

a better one 用这部和以前的任何一部比较,用比较级,从语义上看可知是泛指以前看过的,所以不是特指那一部电影,用a 不用the.