【问】 请解释buy of与buy off的区别。

【答】 buy of (介词)表示“从……购买”：

I bought this car of John.

我从约翰手里买下了这部汽车。

buy off(副词)表示“收买”、“向……行贿”：

1. If you’re trying to buy me off，I’m afraid you’ve come to the wrong person.(ODCIE)

你要是企图收买我，恐怕你是找错人啦。

2. His sister threatened to tell the police，so he had to buy her off. (LDPV)

他的妹妹威胁说，要去告诉警察，所以他只好用钱把妹妹收买了。