The walls are made from old glass bottles that are glued together.The roof is made from discarded tiles.为什么用be made from,怎么不用be made of.be made of不是能看出原材料的那种吗?
问题描述：
The walls are made from old glass bottles that are glued together.
The roof is made from discarded tiles.为什么用be made from,怎么不用be made of.be made of不是能看出原材料的那种吗?
答
to be made of可看成是一种含‘物理变化’的制作,即保存原质只是形状变化的制作；
to be made from则可看成是一种包含‘化学变化’的制作,即有某种质变的制作.