be made of和be made from有什么区别

　　be made of和be made from的区别：
　　1）be made of 强调的是某一物体就直观上仍可看出原材料是什么，变化过程仅仅是物理变化。
　　The taps appeared to be made of solid gold.
　　水龙头似乎是用纯金制成的。
　　The pipes should be made of plastic .
　　这些管子应该是用塑料制作的。
　　2）be made from 强调的是某一物体从直观上已完全无法判断原材料为何物，在转换过程中发生了化学变化。
　　Future buildings, roads, and cities may be made from garbage.
　　将来的大楼，道路，乃至城市可能用垃圾废物来建造。
　　The paper is made from the wood.
　　这种纸是用木材做的。

be made of和be made from都表示“由……制成”,主语为制成品.
1.be made of 表示制成成品后,仍可看出原材料是什么,保留原材料的质和形状,制作过程仅发生物理变化.如：
The kite is made of paper．风筝是用纸做的.
2.be made from 表示制成的东西完全失去了原材料的外形或特征,或原材料在制作过程中发生化学变化,在成品中已无法辨认.如：
The paper is made from wood．纸是木头做的.
Butter is made from milk．黄油是从牛奶中提炼出来的.