1、made of的意思是“由……制成”。

2、The gates were made of wrought iron. 这些大门是用熟铁制成的。

3、The model of the building was made of card. 建筑物的模型是用厚纸片制造的。

4、If its made of wood it will float. 这要是木材做的就能浮在水面上。