made of 还是 made from?

我们先看下面几个句子：

1. This desk is made of wood.
2. That building is made of bricks and wood.
3. This wind is made from grapes.
4. Paper is made from wood.

分析上面几个句子，可以看出：

• made of 表达的意思是“用...制成”。这里制成品和材料之间并没有发生剧烈的变化。我们甚至可以把 made of 理解成“组成”。
• made from 表达的意思也是"用 ... 制成"。这里制成品和原材料之间发生了剧烈的变化，从外表基本上看不出原材料是啥。