be made+介词.的所有形式与辨析.

问题描述:

be made+介词.的所有形式与辨析.

be made of/be made from 都是表示“由...制成”;be made of 表示在产品中能够看出原材料;be made from表示在产品中看不出原材料.
be made into的意思是:把...制成...;
be made up of 的意思是:由...组成.