Are cakes ‘made of’ eggs or ‘made from’ eggs?這兩個動詞片語真的很容易搞混耶。
BBC Learning English裏有個 Ask About English 的單元，對於這個made of跟made from到底差在哪惱人的問題提出了淺顯易懂的回答（而且還有音檔可以聽呢！）：
— be made of
This shirt is made of cotton.
This house is made of bricks.
The keyboard I use on my computer is made of plastic.-> 這三個例子的成品看得出原料的樣子－cotton做成襯衫，但它還是cotton；bricks做成了房子，但它還是bricks；以此類推。
— be made from
On the other hand, we might say: Paper is made from trees.
Wine is made from grapes.
OR This cake is made from all natural ingredients.-> 這三個例子的成品已經不是原來的東西了－樹做成紙，它已經不是樹了；葡萄做成酒，它已經不再是葡萄了；以此類推。
So this is the rule:
If something keeps its form, we use ‘made of” But if the form is changed during the process of making, then we use ‘made from’. -> 所以規則來了，如果某物保留它原來的形式（form），那就是用made of，但如果已經改變了形式，就必須用made from囉！
我會勸同學，只要背葡萄酒的例子 Wine is made from grapes. 就可以記住規則了！
用酒來當例子怎麼那麼好記？
Whisky a strong alcoholic drink made from malted grain.
Beer is made from malt and flavoured with hops.
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