be made from,be made of ,be made by ,be made in的用法 语法和例句
问题描述：
be made from,be made of ,be made by ,be made in的用法 语法和例句
答
be made from 用什么制成,看不见原材料.be made of 也是用什么制成,能看见原材料.be made by 有某人制成 be made in 在什么地方制成或生产.比如：the table is made of wood.桌子由木头制成.（看见材料）.the paper ...