Mr Green ,for--life had once been very hard ,donated his pos

Mr Green ,for__life had once been very hard ,donated his possessions to the poor in his fifties
Awhose Bwhich C whom Dwhat
能将主句从句拆开讲一下吗谢谢

如果还有问题,可以问我,
再问： 主句从句各是什么
再答： whom 在for后面用宾格 主体部分是Mr Green donated his possessions to the poor in his fifties。 中间是个插入的部分，,for whom life had once been very hard。意思是对于他来说生活曾如此苦难 正常句式是 life had once been very hard for him