If there is no choice,there is no decision to be made.

答：there is sth. to do. 和there is sth. to be done两种结构都有,有一点细微的区别.当我们用主动不定式时,表示其逻辑主语就是说话者相当于：there is sth. for us (me) to do.
如果说话者认为这事情不是由自己来做的,则用不定式的被动式.
译：如果没有选择的机会,则没有可做的决定.