the fence of the house was built out of used soda cans.
问题描述：
the fence of the house was built out of used soda cans.
这里什么时候用out of 什么时候用from\of我还记得刚写过有一句是,the bridge was built out of steel.所以我弄稀里糊涂了,
答
out of一般是指从具体物体里取出、拿出、走出、发出等等.
而out from则是来自或发自抽象物体里.
例如：
out from death
out from confrontation
out from deep
out from under
等等.