讲解文本：

bad-mouth 严厉批评，说坏话，恶意攻击
Why do you always bad-mouth my friends?
你为什么总说我朋友的坏话？
I don't think it's right to bad-mouth others. So don't do it.
我认为说别人坏话是不对的，你最好别这样做。

疯狂练习吧！