We advise the government to take measure to relieve the problem.

The government is advised to take measure to relieve the problem.

不定式短语to take measure to relieve the problem.在主动句中是宾补，在被动句中是主补。其中to relieve the problem是to take mesure的目的状语，所以二个二者共同分析为一个不定式短语做宾补或主补。