Try not to let negative thoughts take over. 尽量别受消极的想法左右。(摘自《牛津高阶英汉双解词典》第9版p.2203)
这里的 take over 表示“占上风”、“取而代之”,是不及物动词短语。如果表示“取代......”, 用 take over from...,如:
It has been suggested that mammals took over from dinosaurs 65 million years ago. 有人提出哺乳动物是在6500万年前取代恐龙的。(摘自《牛津高阶英汉双解词典》第9版p.2203)
I took over from him last week. 我上周接任他的职务。(摘自《英汉多功能词典》新编升级版p.1732)