be made of
be made from 这两个短语都是由什么材料制成的意思.屈别是前者可以看得出材料,而后者看不出材料.
例如Paper is made from wood. The table is made of wood.
Could you tell me what this is made of/from?
这个就是:请问这个东西是什么做的呢?注意what this is made of/from部分为宾语从句,要用陈述句的语序
希望对你有所帮助.