During the 2016 presidential campaign, nearly a quarter of web content shared by Twitter users in the politically critical state of Michigan was fake news, according to the University of Oxford.
语法分析：该句主干是nearly a quarter of web content was fake new。During the 2016 presidential campaign做状语。shared by Twitter users 属于V-ed by结构，做定语修饰前面的content。in the politically critical state of Michigan做定语修饰users。according to the University of Oxford状语，需要调到句首。翻译为据……显示。
翻译：据牛津大学的数据显示，在2016年的总统大选中，在政治上处于关键地位的密歇根州，其推特用户分享的的四分之一的网页内容都是虚假新闻。
