其实成语中没有be made of/from/with,所以理解应从介词入手.of可以是材料,而且是成品可以看得出的材料；from可以是材料,但是强调来源,而且其材料是从成品上看不出的材料；with可以是材料,但是更重要的是强调方法,从实际使用例子上看,成品表面可以看得到材料本身,也可以是看不到的,比如：We can made many words with a base.再比如：These tessellations can be made with triangle grids.还有：Healthy Desserts Made with Olive Oil