be made of与be made from的区别
be made of表示制成成品后,仍可看出原材料是什么：
The kite is made of paper．风筝是用纸做的.
be made from表示制成的东西完全失去了原材料的外形或特征：
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；
This TV set is made in Shanghai．这台电视是上海制造的.