it is made of wool. 意思是 它是羊毛制的。
be made of 由。。。。制成 (可以看到原材料的)
例如:
That chiffonier is made of oak.
那件小衣橱是橡木制成。
This salad is made of apple, pear, potato and celery.
这份色拉是由苹果、梨、土豆和芹菜做成的。
注意要和be made from 由。。。。制成区分
be made from 是指看不到或辨识不到原材料的
例如:
Wine is made from grapes.
葡萄酒是用葡萄酿成的。
These pancakes are made from batter.
这些薄煎饼是用牛奶、鸡蛋、面粉调成的面糊做的。
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