题目内容：

be made from,be made of ,be made by ,be made in的用法 语法和例句

优质解答

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 ...