1. 用......做的：be made of... 用......做的 | be used for doing ... 被用来做...... | keep warm 保暖
2. 由......制成(制成以后还看得见原材料)：50 .be made from 由......制成(制成以后看不见原材料) | 51. be made of 由......制成(制成以后还看得见原材料) | 52. be not sure 表不确定
3. 由......制成：be keen on 喜爱 | be made of 由......制成 | be made up of 由......组成