be make from

是be made from吧？这个短语意思是 由**制成 例如 the book is made from wood
be made of和 be made from的区别就是一个用于可以看出原材料的物体一个用于看不出来原材料的物体

发生物理变化的用be made of
发生化学变化的用be made from

make from
v.
由...制造（多种物体）
好像没有be make from这个短语。
最接近的是
be marked by
特点是, 以...为特点

be made from/of/up of是高中经常用的短语,又很容易搞混
三者都是由什么组成的意思 be made from是只成品能看出原材料,如房子the house is made from wood/stone
be made of是只不能看出原材料如纸most paper now is made of wood
be made up of 是指总体是由什么部分组成的,着一般没有物理化学的加工如our shool is made of 3 grades

be made from是指看不出原材料的由...制成
例如the paper is made from tree
be made of是指看的出原材料的由....制成
例如the desk is made of wood

与be made of 的意思一样，都是“由什么制成的”，区别是be made of 看得出原材料，而be made from看不出原材料。如：Paper is made from grass.(纸是用草制成的。) Glass is made from stone.（玻璃是用石头制成的。）