vegetable

　　The terrible accident turned him into a vegetable.

　　Since losing his job my brother has felt like a vegetable.

　　vegetable在教材中的意思为“蔬菜”和“植物”,作名词用。

　　上面两个句子中的vegetable还是名词的用法,但意思发生了变化,分别为“植物人”和“生活单调乏味的人”。