made of和made from是什么意思

made of 和made from 的意思都是“由……制成”,但是有区别：
made of made of 和made from 的意思都是“由……制成”,但是有区别：
made of 指制成品能看出原材料,例如：
This desk is made of wood.
made from 指制成品看不出原材料,例如：
The wine is make from grapes.
This suit is made of very good material.
这套衣服的质料很好。
Some bowls were made of pottery and wood.
一些碗是用陶土和木头制成的
Only the rough guess and estimate can be made of it.
对此只能作出一个粗略的测算。
Nylon is made from air, coal and water.
尼龙是由空气、煤和水加工制成.
Some of the best extensions are made from sections of rod tube or drainpipe.
最好的延长管中有些是用杆管或排水管制成的。

made of和made from的区别
be made of和be made from都表示“由……制成”，主语为制成品。 具体的判断标准可以看后面的材料发生的是物理变化还是化学变化。比如纸风筝由纸张做成，仍保留着纸的形态所以是物理变化。而纸张是由木头做成的，则已经失去了木头的形态所以就是化学变化。 如果有些成分材料复杂的物品比如同学说的金手表和油漆桌，一般在没有上下文的情况下，是指其主要组成部分的原材料。 1.be made of 表示制成成品后，仍可看出原材