说某人坏话 speak ill of sb.
(1) speak可以表示“表达，表明（观点或意见）”
(2) speak ill of sb.“说某人坏话”，ill是副词
英语解释为to say malicious, objectionable, or defamatory things about someone。
例
I think it does no good to speak ill of others.
我觉得说别人的坏话并没有什么用。
I never speak ill of a colleague.
我从不说同事的坏话。《神探夏洛克》
说某人坏话 say something bad about sb.
(1) say something bad/negative about sb. “说某人坏话”
(2) say bad things about sb. “说某人坏话”
例
I cannot say anything bad about that boy.
我不能说任何关于这个孩子的坏话。
Why did you say bad things about me?
你为什么要说我坏话？
说三道四 say something judgemental
(1) judgemental “动辄批评人的，爱评头论足的，说三道四的”
(2) say something judgemental “说三道四，评头论足”
例
You'd tell 'em. They'd say something judgmental.
你一告诉他们，他们就开始说三道四。
Mitchell, she is your family. Of course she's gonna be judgmental and condescending.
米奇尔，她是你的家人，她当然会说三道四、盛气凌人了。