be made into/be made of /be made from/be made by sb/be made

e made into表示由.材料做成.,into后面跟产品,如：The wood is made into a desk. be made of是“由.制成”, of后面跟可以看到的原材料.如：The desk is made of wood. be made from 表示“由.制成：”from后面跟看不到原材料.如：The paper is made from wood. be made by sb表示由.人制成,如：The desk is made by him. be made in表示在.地方制成.如：It is made in China