be made of和be made from有什么区别

be made of和be made from有什么区别

be made of和be made from都表示“由……制成”,主语为制成品.
1.be made of 表示制成成品后,仍可看出原材料是什么,保留原材料的质和形状,制作过程仅发生物理变化.如：
The kite is made of paper．风筝是用纸做的.
2.be made from 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 paper is made from wood．纸是木头做的.
Butter is made from milk．黄油是从牛奶中提炼出来的.

都是“由什么组成” 的意思。 be made of 是可以看出原材料的,例:the sweater was made of woollen. 毛衣是羊毛作的(可以看出的) 。 be made from是不可以看出原材料的,例/:the paper is made from wood 纸是树木作的(看不出来的)。

.be made of 表示可以看出原材料是什么 be made from 表示看不出原材料

be made of看的出原材料，而be made from看不出原材料。如果有时候记不住可以这样记，of看出，是两个词的，from看的出来，是四个词的

be made of 强调的是某一物体就直观上仍可看出原材料是什么，变化过程仅仅是物理变化； be made from 强调的是某一物体从直观上已完全无法判断原材料为何物，在转换过程中发生了化学变化。 如：The fence was made of posts joined together with wire.篱笆是以铁丝连接起木桩而构成的。 再如：Wine is made from grapes. 葡萄酒是用葡萄酿成的。 请采纳