Life now 是主语的主语,Compared with 是过去分词短语引导状语从句,compared with life in the past 是状语从句。从句的逻辑主语要和主句主语一致。
,主句主语和从句句首动词是被动关系,就用过去分词。是主动关系,就用动名词。
这句可以是时间状语,被动关系。when life now is compared with life in the past ,life now is more comfortable.
主动关系的例句:Feeling disappointed, Jane had to stay another night here.感到失望,Jane不得不在这再待一个晚上