“be made of”和“be made from”的使用對象不同：be made of表示制成成品后，仍可看出原材料是什么，保留原材料的質(zhì)和形狀，制作過程僅發(fā)生物理變化。be made from表示制成的東西完全失去了原材料的外形或特征，或原材料在制作過程中發(fā)生化學(xué)變化，在成品中已無法辨認(rèn)。

be made of和be made from對比

The kite is made of paper.風(fēng)箏是用紙做的。（能看出原材料）

The paper is made from wood.紙是木頭做的。（看不出原材料）

be made of例句

The pipes should be made of plastic.

這些管子應(yīng)該是用塑料制作的。

The taps appeared to be made of solid gold.

水龍頭似乎是用純金制成的。

Only the rough guess and estimate can be made of it.

對此只能作出一個(gè)粗略的測算。

be made from例句

There's money to be made from tourism.

旅游業(yè)非常有利可圖。

An unlimited number of copies can still be made from the original

仍可以由原件復(fù)印出無數(shù)份副本來。

Synthetic silk can be made from wood fibres.

人造絲可用木纖維制造。