be made of和be made from都表示“由……制成”,主语为制成品,但前者表示制成成品后,仍可看出原材料是什么,保留原材料的质和形状,制作过程仅发生物理变化;后者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。如:
The kite is made of paper.风筝是用纸做的。
The paper is made from paper.纸是木头做的。
Butter is made from milk.黄油是从牛奶中提炼出来的。
be made in表示某物在某地生产或制造,in后接表示地点的名词;be made by表示“由(谁)制造”,by后接动作的执行者;be made for表示“为……而制造”。如:
This TV set is made in Shanghai.这台电视是上海制造的。
The machine is made by the workers in the factory.这机器是由工厂里的工人们制造的。
These desks were made for the students.这些书桌是为学生们做的。