Hundreds of years ago,life was much harder than it is today.这句话为什么要加it is?直接写than today不行吗

问题描述:

Hundreds of years ago,life was much harder than it is today.这句话为什么要加it is?直接写than today不行吗

因为对比的不是today 而是today's life那我也可以说 life was much harder than today's life?对!哦 thanks