be made of和be made from的区别：含义不同、用法不同、强调重点不同。be made of含义为“……制的”，后面可接名词、代词作宾语；be made from含义为“由……制成的”，作为不及物动词，主动形式常含有被动意义。
一、be made of的含义及用法
be made of意为……制的，表示制成成品后，仍可看出原材料是什么。
例句：The pipes should be made of plastic.
这些管子应该是用塑料制作的。
Only the rough guess and estimate can be made of it.
对此只能作出一个粗略的测算。
Everybody should be made aware of the risks involved.
应该让人人都知道其中的风险。
It was a rare honour to be made a fellow of the college.
成为这所学院的研究员是极大的荣誉。
Statement should be made on the basis of fact.
说话要有根据。
They can be made of ceramic materials as well.
他们可以和陶瓷材料制成的。
We should consider what use can be made of such a material.
我们应该考虑这样的材料被用来做什么。
二、be made from的含义及用法
be made from意为由…制成的，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。
例句：There's money to be made from tourism.
旅游业非常有利可图。
The comparisons can be made from two aspects.
具体可以从渗透调节和离子平衡两个方面进行比较。
Any color of paint can be made from the primary colors.
用原色可以配制任何颜料颜色。
Future buildings, roads, and cities may be made from garbage.
将来的建筑物、公路和城市都可能用垃圾制成。
Next mold will be made from high tear strength rtv for sure.
模具明年将作出从高撕裂强度室温硫化肯定的。
